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Agronomic Responses of Wheat and Oat Cultivars Under Dual-Purpose and Grain Production Management Strategies -
Effects of Different Heading Dates on Agronomic and Yield-Related Traits Under Salt Stress in Rice -
Ultrafine Bubble Irrigation Enhances Early Growth and Antioxidant Activity of Rice Seedlings Under Nutrient-Free Conditions -
Sustainable Management of Vineyards with Intercropping Systems of Cereals with Pea Under Mediterranean Conditions -
Protein Hydrolyzate-Based Biostimulants in Fruit Crops: Mechanisms, Agronomic Effects, and Practical Applications
Journal Description
Crops
Crops
is an international, peer-reviewed, open access journal on the science and technology of crops published bimonthly online by MDPI.
- Open Access— free for readers, with article processing charges (APC) paid by authors or their institutions.
- High Visibility: indexed within ESCI (Web of Science), Scopus, and other databases.
- Journal Rank: JCR - Q2 (Agronomy) / CiteScore - Q2 (Agronomy and Crop Science)
- Rapid Publication: manuscripts are peer-reviewed and a first decision is provided to authors approximately 20.7 days after submission; acceptance to publication is undertaken in 3.9 days (median values for papers published in this journal in the first half of 2026).
- Recognition of Reviewers: APC discount vouchers, optional signed peer review, and reviewer names published annually in the journal.
- Crops is a companion journal of Agriculture and Agronomy.
- Journal Cluster of Agricultural Science: Agriculture, Agronomy, Horticulturae, Soil Systems, AgriEngineering, Crops, Seeds, Grasses, Agrochemicals and AI and Precision Agriculture.
Impact Factor:
2.1 (2025);
5-Year Impact Factor:
2.2 (2025)
Latest Articles
Combined Effects of Arbuscular Mycorrhizal Fungi, Plant Growth-Promoting Rhizobacteria, and Mineral Fertilization on the Physiological, Biochemical, and Nutritional Properties of Chilaca Chili Pepper (Capsicum annum L.)
Crops 2026, 6(4), 79; https://doi.org/10.3390/crops6040079 - 12 Aug 2026
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Pepper fruits contain diverse primary and secondary metabolites, including ascorbic acid, carotenoids, phenolics, and flavonoids, which contribute to nutritional quality, antioxidant capacity, coloration, and consumer acceptance. Chilaca chili pepper (Capsicum annuum L.) is a Mexican cultivar valued for its distinctive flavor and
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Pepper fruits contain diverse primary and secondary metabolites, including ascorbic acid, carotenoids, phenolics, and flavonoids, which contribute to nutritional quality, antioxidant capacity, coloration, and consumer acceptance. Chilaca chili pepper (Capsicum annuum L.) is a Mexican cultivar valued for its distinctive flavor and pungency, representing a valuable resource for studying fruit quality and sustainable crop improvement. This study evaluated the individual and combined effects of arbuscular mycorrhizal fungi (AMF) and plant growth-promoting rhizobacteria (PGPR) on growth, physiological responses, antioxidant activity, and fruit quality traits. Twelve treatments in a 3 × 2 × 2 factorial designs were evaluated for chlorophyll, soluble solids, biomass, APX and LOX activities, and vitamin C and capsaicin contents at three ripening stages (green, mid-red, and red). Enzyme activities were determined spectrophotometrically, and bioactive compounds were quantified from methanolic fruit extracts. Microbial inoculation primarily improved fruit physiological quality rather than vegetative growth. Biomass and growth traits showed no significant differences among treatments (p > 0.05), whereas biochemical responses exhibited distinct ripening-dependent patterns. APX activity, vitamin C, and capsaicin increased from green to mid-red stages and declined at full ripeness. Bacillus sp.-based treatments (T1 and T2) produced a significant transient increase in LOX activity during mid-ripening, while T7 showed a similar but weaker response. AMF progressively enhanced LOX activity and capsaicin accumulation in green fruits. PGPR effects were strain-dependent, with Bacillus sp. promoting early capsaicin accumulation and A. deleyi favoring higher levels during advanced ripening. Overall, AMF and PGPR differentially regulate antioxidant metabolism, vitamin C accumulation, and capsaicinoid biosynthesis while interacting with mineral fertilization to improve fruit quality. These findings support beneficial microorganisms as sustainable tools for enhancing nutrient-use efficiency and fruit nutritional and functional value without replacing mineral fertilization.
Full article
Open AccessArticle
Determination of the EMS Lethal Dose (LD50) and Characterization of Induced Mutations in Industrial Hemp (Cannabis sativa L.)
by
Teja Vengala, Tariq Mahmood, Christopher Garcia and Russell Jessup
Crops 2026, 6(4), 78; https://doi.org/10.3390/crops6040078 - 12 Aug 2026
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Cannabis sativa is a multi-use crop with applications in food, fiber, construction, and medicinal industries. Cannabis plants with low Δ9-tetrahydrocannabinol (THC) concentrations (industrial hemp) have recently been legalized for industrial cultivation by multiple nations across the globe. This crop has been traditionally ignored
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Cannabis sativa is a multi-use crop with applications in food, fiber, construction, and medicinal industries. Cannabis plants with low Δ9-tetrahydrocannabinol (THC) concentrations (industrial hemp) have recently been legalized for industrial cultivation by multiple nations across the globe. This crop has been traditionally ignored and lags behind established crops like wheat, corn, and cotton in breeding and the development of novel traits. We employed chemical mutagenesis to develop novel traits in industrial hemp (Cannabis sativa L.). We used ethyl methanesulfonate (EMS) as the chemical mutagen and determined the lethal dose (LD50) to be 2% (v/v) for 5 h for the heat-tolerant (HT) (diploid, 2n) accession and 2% (v/v) for 8 h for the 4x (tetraploid, 2n = 4x = 40) accession. The variations in seed germination percentages among mutagen treatments were found to be highly significant (p < 0.05). The parental generation (M0) seeds were treated with the LD50 dosage of the mutagen to produce mutant M1 populations. The first mutant generation (M1) and second mutant generation (M2) plants displayed a wide array of phenotypes such as dwarf plants, twin seedlings, leaf variegation, fasciation, purple anthocyanins, hard/leathery leaf texture, trifoliate leaves, bushy stature, and unusual leaf shape, which is a testament to the effectiveness and accuracy of the LD50 dosage calibration results.
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Open AccessArticle
Identification and Classification of Salt-Tolerant Rice Germplasm Using Regression-Based Phenotyping and Multivariate Cluster Analysis
by
Giwon Cho, Gyucheol Kim, Tugsang Yun and Yoetae Yun
Crops 2026, 6(4), 77; https://doi.org/10.3390/crops6040077 - 10 Aug 2026
Abstract
Salinity is a major constraint on rice production, and reliable screening methods are needed to identify germplasm with favorable responses across different stress levels. This study evaluated seedling-stage salinity responses in 210 rice accessions exposed to 0, 0.25, 0.50, and 0.75% NaCl under
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Salinity is a major constraint on rice production, and reliable screening methods are needed to identify germplasm with favorable responses across different stress levels. This study evaluated seedling-stage salinity responses in 210 rice accessions exposed to 0, 0.25, 0.50, and 0.75% NaCl under hydroponic conditions. Total length, shoot length, root length, dry weight, and visual salt-injury score were measured, and accession-specific regression coefficients were calculated to quantify concentration-dependent responses. Increasing NaCl concentrations progressively reduced all growth traits and increased visible injury. At 0.75% NaCl, total length, shoot length, root length, and dry weight decreased by 38.8, 34.3, 49.4, and 43.6%, respectively, relative to the control. Root length showed the greatest proportional reduction among the growth traits. The mean regression coefficients were −2.48 for total length, −2.03 for shoot length, −2.84 for root length, −2.31 for dry weight, and 3.25 for salt-injury score, revealing substantial variation among accessions. Principal component analysis of the five response coefficients retained two principal components that together explained 66.20% of the total variation. PC1 mainly represented overall growth maintenance, whereas PC2 reflected root-growth maintenance and slower progression of visible injury. Hierarchical clustering of PC1 and PC2 scores produced an exploratory three-group classification consisting of 29 relatively sensitive, 107 intermediate-response, and 74 relatively tolerant accessions. Although internal validation favored a broader two-group structure, the three-group solution was useful for describing contrasting multivariate response profiles. The reference accessions IR29 and Pokkali were assigned to the relatively sensitive and relatively tolerant groups, respectively. Several additional accessions from diverse origins and genetic backgrounds were included in the relatively tolerant group. These accessions should be regarded as putative seedling-stage salt-tolerance candidates requiring further physiological, reproductive-stage, and field validation. Overall, the combined use of regression analysis, principal component analysis, and hierarchical clustering provided a practical framework for characterizing salinity-response variation in a large rice germplasm panel.
Full article
(This article belongs to the Topic Plant Responses and Tolerance to Salinity Stress, 2nd Edition)
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Open AccessReview
The Prospects of Agastache spp. as Multipurpose Crops: Facts and Challenges—A Review
by
Roman Pavela
Crops 2026, 6(4), 76; https://doi.org/10.3390/crops6040076 - 10 Aug 2026
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The genus Agastache comprises aromatic and medicinal plants of increasing interest for the diversification of high-value crops. Among them, Agastache foeniculum (Pursh) Kuntze and Agastache mexicana Lint. et Epling represent two contrasting yet complementary models of multipurpose medicinal and aromatic species. This review
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The genus Agastache comprises aromatic and medicinal plants of increasing interest for the diversification of high-value crops. Among them, Agastache foeniculum (Pursh) Kuntze and Agastache mexicana Lint. et Epling represent two contrasting yet complementary models of multipurpose medicinal and aromatic species. This review critically compares both species with respect to taxonomy, origin, domestication, agronomic performance, phytochemical diversity, biological activities, quality standardization, safety, regulatory status, and industrial applications. Current evidence indicates that A. foeniculum is well adapted to temperate cultivation systems and represents a valuable source of essential oils and polyphenol-rich biomass, whereas A. mexicana offers considerable potential for the development of standardized nutraceutical, cosmetic, and phytopharmaceutical products. Nevertheless, the broader commercialization of both species remains constrained by pronounced chemotype variability, limited multi-site agronomic validation, insufficient clinical evidence, safety concerns associated with certain volatile constituents, and an evolving regulatory framework. The available evidence underscores the need to move beyond descriptive studies toward integrated crop development strategies that combine metabolomics-based chemotype classification, genomic and transcriptomic analyses, breeding for stable and safe phytochemical profiles, polyploidy-assisted improvement, climate-smart cultivation practices, and standardized post-harvest processing. Collectively, these approaches will facilitate the sustainable exploitation of both species and support their transition from promising medicinal and aromatic plants to commercially viable, high-value multipurpose crops for sustainable agriculture.
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Open AccessArticle
Harvest-Dependent Variability in the Ripening and Fruit Characteristics of the Cenicafé 1 Variety of Coffee
by
Carlos Andres Unigarro, Luis Carlos Imbachi, Andrés Felipe León-Burgos, Daniel Gerardo Cayón-Salinas and Claudia Patricia Flórez-Ramos
Crops 2026, 6(4), 75; https://doi.org/10.3390/crops6040075 - 5 Aug 2026
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The phenological responses of different progenies to the effect of ambient temperature on the duration of the fruit ripening cycle in Coffea arabica L. remain poorly understood. In this study, the ripening cycle in the coffee progenies of the Cenicafé 1 variety was
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The phenological responses of different progenies to the effect of ambient temperature on the duration of the fruit ripening cycle in Coffea arabica L. remain poorly understood. In this study, the ripening cycle in the coffee progenies of the Cenicafé 1 variety was recorded using the number of growing degree days during the main and secondary harvests. Concurrently, variables such as the number of fruits per node, firmness, diameter, volume, fresh mass, dry mass of the pericarp and bean, and the fruit respiration rate were measured. A semiparametric repeated-measures analysis of variance was used to assess inferential components, and Spearman’s multiple correlations were used to examine the associations between variables. No significant differences were observed between the progenies for any variable. However, we detected differences between harvests in terms of the number of growing degree days, number of fruits per node, fruit firmness, fruit diameter, fruit fresh mass, and pericarp and grain dry mass. Furthermore, the correlation analysis revealed that the physical characteristics of the fruit exhibited the strongest associations among themselves. The absence of significant differences in the ripening cycle and fruit characteristics among the progenies may be attributed to their shared genetic origin. Finally, the observed change in the number of fruits per node between harvests directly influenced the physical characteristics of the fruits (diameter, volume, fresh mass, and pericarp dry mass), as the reduced physical space available for individual fruit growth when the node fruit load was higher limited their development.
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Open AccessArticle
Long-Term Effects of Tillage Systems on Weeds and Maize Yield in the Transylvanian Plain
by
Felicia Chețan, Roxana Elena Călugăr, Alina Șimon, Camelia Urdă, Cornel Chețan, Alin Popa and Adrian Ioan Pop
Crops 2026, 6(4), 74; https://doi.org/10.3390/crops6040074 - 3 Aug 2026
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This study evaluated the long-term effects of soil tillage systems on weed dynamics and maize (Zea mays L.) yield in the Transylvanian Plain, Romania, over an eight-year period (2018–2025). A long-term field experiment was established under a split-plot design with four tillage
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This study evaluated the long-term effects of soil tillage systems on weed dynamics and maize (Zea mays L.) yield in the Transylvanian Plain, Romania, over an eight-year period (2018–2025). A long-term field experiment was established under a split-plot design with four tillage systems: conventional tillage (CS), minimum tillage with chisel (MTC), minimum tillage with disk (MTD) and no-tillage (NT). Results indicated that reduced soil disturbance significantly increased total weed density, with a clear shift in community structure toward perennial species under conservation tillage systems. Weed infestation ranged from 8 to 9 plants m−2 in CS to 18–25 plants m−2 in NT. Maize yield showed a progressive decline with decreasing tillage intensity, from 7283 kg ha−1 in CS to 4725 kg ha−1 in NT. ANOVA results confirmed highly significant effects of tillage system (F = 2451.15; p < 0.001) and year (F = 79.62; p < 0.001), as well as a significant tillage × year interaction (F = 2.15; p < 0.05), indicating temporal variability in treatment responses under changing climatic conditions. Under the specific pedoclimatic conditions of the Transylvanian Plain, reduced tillage systems showed lower maize productivity compared with conventional tillage, indicating that the balance between soil conservation and yield performance depends on local environmental and management conditions.
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Open AccessArticle
Multi-Trait Index-Based Characterization of Putative Drought-Heat Tolerant Gamma-Irradiated Rice Mutants Through Artificial Screening at the Seedling Stage
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Achmad Kautsar Baharuddin, Amir Yassi, Bambang Sapta Purwoko, Muh Riadi, Amin Nur, Iswari Saraswati Dewi, Reflinur Reflinur, Andi Isti Sakinah, Wijaya Murti Indriatama and Muhammad Fuad Anshori
Crops 2026, 6(4), 73; https://doi.org/10.3390/crops6040073 - 27 Jul 2026
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Rice is highly vulnerable to concurrent drought-heat stress, which intensifies the disruption of plant growth and can cause high seedling mortality. Limited genetic diversity further constrains breeding for combined stress adaptation. Thus, mutation breeding has emerged as a solution for inducing beneficial variability
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Rice is highly vulnerable to concurrent drought-heat stress, which intensifies the disruption of plant growth and can cause high seedling mortality. Limited genetic diversity further constrains breeding for combined stress adaptation. Thus, mutation breeding has emerged as a solution for inducing beneficial variability in rice genomes. Based on this solution, this study aimed to identify rice mutants tolerant to drought and heat through artificial screening combined with multi-trait index analysis. Experiments were conducted from April to August 2025 at Hasanuddin University in two sequential phases: seedling screening in a controlled stress chamber and pot evaluation under semi-controlled conditions. Mutants were derived from the seeds of the double haploid (DH) rice line HS1-28-1-5, which was previously developed through anther culture and exhibited potential abiotic stress adaptability. DH seeds were exposed to gamma irradiation (200–1000 Gy) as the M1 population. Based on radiosensitivity evaluation, 200 and 400 Gy were selected and used in the present study as the M2 populations. Rice M2 evaluation results indicated that 200 Gy irradiation enhanced phenotypic variability with improved performance, whereas M2 400 Gy resulted in broader but less stable variation. Yield components were strongly associated with weight per clump, with panicle length being the primary direct contributor and weight per panicle mediating indirect effects. Principal component analysis accounted for 89.13% of the total variation, which was predominantly driven by yield traits. Integrated weighted average absolute score–tolerance score analysis classified genotypes into tolerance groups, identifying 33 putative tolerant mutants, with M2 200 Gy mutants demonstrating superior adaptability to drought-heat stress. These findings suggest that moderate irradiation coupled with multi-trait index selection provides a reproducible framework for identifying putative drought-heat-tolerant rice candidates at early stages while retaining relevance to subsequent yield recovery.
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Open AccessArticle
Epidemiology of Cocoa Swollen Shoot Disease (CSSD) on Rehabilitated Cocoa Farms in South-Western Côte d’Ivoire
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Koffié Kouakou, Antoine Bolou Bi Bolou, Luc Bele, Valentin Luis Fredrik Wolf, Jacques Kobenan Tidiane, Nazaire Kouassi, Anatole Mian, Thomas Kouakou, Christophe Kouamé and Jean-Philippe Marelli
Crops 2026, 6(4), 72; https://doi.org/10.3390/crops6040072 - 27 Jul 2026
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This study was conducted to understand the reinfection pattern of cocoa swollen shoot disease (CSSD) in rehabilitated plots in the cocoa landscape of the Nawa region (Soubré) in Côte d’Ivoire. CSSD was monitored over time on a sample of 200 farms randomly selected
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This study was conducted to understand the reinfection pattern of cocoa swollen shoot disease (CSSD) in rehabilitated plots in the cocoa landscape of the Nawa region (Soubré) in Côte d’Ivoire. CSSD was monitored over time on a sample of 200 farms randomly selected from 1200 rehabilitated cocoa farms. Disease epidemiological parameters were assessed through field observations and molecular diagnostic analysis at farm and landscape levels. The results of this study showed that reinfection occurred earlier than expected, with a high disease incidence estimated at 6.95% from 2020 to 2022. Grafting with clones on mature cocoa trees was more susceptible to reinfection than grafting on seedlings and hybrids. The use of PCR as a molecular diagnostic tool indicated missed infections in the current removal strategy when considering the buffer zone recommended in the cutting out process currently in place. Recommendations for the efficient protection of rehabilitated farms after cutting out campaigns are highlighted.
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Open AccessArticle
Aeroponic Growth System and Soil-Based Cultivation: Insights into Mineral Nutrients, Antioxidant Molecules and Antioxidant Activity in Edible Parts of Different Vegetables
by
Lucia Giorgetti, Eliana Lanfranca Tassi, Vincenzo Longo, Massimiliano Leoncini and Lorenza Bellani
Crops 2026, 6(4), 71; https://doi.org/10.3390/crops6040071 - 22 Jul 2026
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In this study, the growth of tomatoes, basil, lettuce and courgette in aeroponic versus traditional soil-based cultivation revealed key differences in mineral nutrient content, antioxidant molecules, and antioxidant activity. The aeroponic system yielded comparable or higher concentrations of P (in basil), K (in
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In this study, the growth of tomatoes, basil, lettuce and courgette in aeroponic versus traditional soil-based cultivation revealed key differences in mineral nutrient content, antioxidant molecules, and antioxidant activity. The aeroponic system yielded comparable or higher concentrations of P (in basil), K (in lettuce and basil), Ca and Mg (in all species), Fe (in tomatoes), Mn (in basil, courgette and tomatoes), and Cu and Zn (in courgette). Aeroponic cultivation enhanced or maintained the antioxidant content, with the highest flavonoid levels in basil (75.84 mg QE g−1 DW), followed by lettuce (65.97 mg QE g−1 DW). Consistent with these findings, total antioxidant activity assays were highest in aeroponically grown basil (91.27 ARA%). However, responses varied by crop and maturity stage: DPPH radical-scavenging activity was greater in soil-grown lettuce (92.30 ARA%), while FRAP values were highest in basil in both aeroponic and soil-grown cultures (197.02 and 195.3 mg FeSO4 g−1 DW, respectively). However, the interspecific differences indicate that aeroponic systems cannot be applied uniformly; rather, each species could maximize productivity and quality under appropriate conditions. Overall, aeroponic cultivation proved to be a resource-efficient and sustainable alternative to conventional soil farming, providing comparable or superior nutritional quality and reducing water consumption.
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Open AccessArticle
Dynamic Changes in Nutrients and Bioactives During Germination of Two New Mung Bean Cultivars
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Qingyuan Hu, Chunyang Jiang, Haitao Liu, Suhua Wang, Yang Yao and Lixia Wang
Crops 2026, 6(4), 70; https://doi.org/10.3390/crops6040070 - 17 Jul 2026
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Mung bean sprouts are widely consumed for their nutritional value; however, the temporal dynamics of their key nutrients and bioactive compounds during germination remain underexplored, limiting evidence-based strategies for optimizing harvest time and cultivar selection. This study investigated the accumulation patterns of crude
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Mung bean sprouts are widely consumed for their nutritional value; however, the temporal dynamics of their key nutrients and bioactive compounds during germination remain underexplored, limiting evidence-based strategies for optimizing harvest time and cultivar selection. This study investigated the accumulation patterns of crude protein, crude starch, vitamin C, total polyphenols, total flavonoids, D-chiro-inositol, vitexin, and isovitexin in two new cultivars (Zhonglv 26 and Zhonglv 27) over a 168 h germination period. Our results revealed that germination consistently enhances protein, vitamin C, polyphenols, flavonoids, and D-chiro-inositol, while reducing starch, vitexin, and isovitexin. Notably, each nutrient reached its maximum at distinct time points—polyphenols at 132–144 h, flavonoids and D-chiro-inositol at 156 h, and protein and vitamin C at 168 h—enabling tailored harvest schedules for specific nutritional goals. Among the cultivars, Zhonglv 27 exhibited higher levels of most measured components, suggesting it may be a more suitable candidate for sprout production aimed at bioactive compound enrichment. These findings establish a time-resolved nutritional framework and may offer useful guidance for producing sprouts with enhanced bioactive content, potentially contributing to the development of value-added sprout products.
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Open AccessArticle
Priming Broad Bean Seeds with Ascorbic, Citric, Nitric, and Salicylic Acids Improves Seedling Tolerance and Alleviates Cr (VI) Toxicity
by
Mohammed Bouhadi, M’hammed El Kouali, Fatima-Zahra Falah, Ayoub Lahmidi, Nora Baouahi, Siham Elmachrafi, Marija Polić Pasković, Igor Pasković, Laila Bennani and Hassan Fougrach
Crops 2026, 6(4), 69; https://doi.org/10.3390/crops6040069 - 17 Jul 2026
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Heavy metal stress severely impairs global agricultural productivity, a challenge exacerbated by rising industrial activities. To mitigate chromium (Cr) toxicity in crops, this study evaluated the potential of seed priming with four distinct acids, ascorbic acid (AA), citric acid (CA), nitric acid (NA),
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Heavy metal stress severely impairs global agricultural productivity, a challenge exacerbated by rising industrial activities. To mitigate chromium (Cr) toxicity in crops, this study evaluated the potential of seed priming with four distinct acids, ascorbic acid (AA), citric acid (CA), nitric acid (NA), and salicylic acid (SA), on broad bean (Vicia faba L.) seedlings exposed to 50 ppm Cr(VI). Cr(VI) exposure alone severely compromised development, reducing root and shoot fresh biomass by 47% and 52.3% and lengths by 60.8% and 62.19%, respectively. This growth inhibition was mirrored by a massive drop in total soluble sugars (over twofold in shoots and threefold in roots) and a twofold spike in toxic hydrogen peroxide (H2O2) accumulation. However, acidic priming agents effectively protected the seedlings from this oxidative crisis. The co-application of these effectors limited the inhibitory effects of Cr(VI), increasing biomass up to twofold and reducing H2O2 levels by around 32% in roots and 26% in shoots. This reduction in oxidative damage subsequently alleviated cellular stress, restoring protein content (by up to 70.72% in shoots under AA) and bringing catalase (CAT) and ascorbate peroxidase (APX) activities back toward baseline levels, reducing them by more than 50% compared to the unprimed Cr(VI) control. Notably, regarding bioaccumulation, only AA priming significantly limited heavy metal uptake, reducing chromium accumulation by 36.5% in roots and 26.5% in shoots. This unique protection is likely linked to a potential chemical reduction of mobile Cr(VI) near the root boundaries and the regulation of internal osmoprotectant systems. These findings suggest that seed priming with these effectors, especially AA, offers a highly scalable, low-cost, and sustainable strategy for enhancing crop tolerance in heavy-metal-polluted soils.
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Open AccessArticle
Agronomic Performance and Grain Quality of Green Maize as Affected by Cover Crops and No-Till System Stages
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José Luiz Rodrigues Torres, Bruna de Souza Silveira, Hamilton César de Oliveira Charlo, Arcângelo Loss, Diego Felisbino Fraga, Simone Aparecida da Silva, Luis Felipe Leite Sabino de Oliveira, Maytê Maria Abreu Pires de Melo Silva, Taísa Cristina Tinoco, Fausto Antônio Domingos Júnior, Daniel Rufino Amaral and Dinamar Márcia da Silva Vieira
Crops 2026, 6(4), 68; https://doi.org/10.3390/crops6040068 - 16 Jul 2026
Abstract
This study evaluated the agronomic and bromatological characteristics of green maize grown under different cover crops and developmental stages of the no-till system (NTS) in the Brazilian Cerrado. A randomized block design with a 6 × 3 factorial arrangement and four replications was
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This study evaluated the agronomic and bromatological characteristics of green maize grown under different cover crops and developmental stages of the no-till system (NTS) in the Brazilian Cerrado. A randomized block design with a 6 × 3 factorial arrangement and four replications was used. Six cover crops were evaluated: Brachiaria (B), Pearl millet (PM), Sunn hemp (SH), and mixtures B + SH, B + PM, and PM + SH. Three NTS stages were assessed: initial (1 year, NTS1), transition (8 years, NTS8), and consolidation (20 years, NTS20). Evaluated variables included cover crop dry matter (DM), green maize ear yield with husk (EYH), shucked ear yield (SEY), straw yield (SY), grain yield per ear (GYE), and grain bromatological characteristics: pH, moisture (HU), ash (AS), lipids (LIP), protein (PTN), carbohydrates (CHE), total titratable acidity (TTA), total soluble solids (TSS), and ascorbic acid (AA). SH and the PM + SH mixture produced the highest DM across the NTS stages. Cover crop residues did not affect green maize yield attributes, whereas progression through NTS stages increased SEY, EYH, and GYE. Bromatological quality was mostly unaffected by cover crops, except for moisture and TSS, while NTS stages influenced pH, moisture, LIP, PTN, TTA, TSS, and AA. The integrated use of cover crops, either as sole crops or intercropping systems, associated with long-term no-till adoption, contributes to increased biomass production and improved grain quality attributes of green maize under Cerrado conditions.
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(This article belongs to the Topic Sustainable Food Production and High-Quality Food Supply)
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Open AccessArticle
Integrating Crop Types, Yield Products, and Price Forecasting with Explainable AI for Agricultural APIs
by
Ohnmar Khin and Sungkeun Lee
Crops 2026, 6(4), 67; https://doi.org/10.3390/crops6040067 - 14 Jul 2026
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The economies of developing countries are mostly dependent on agriculture, with farming serving as many people’s primary source of income. This research aims to enhance agricultural productivity in three primary areas: crop recommendation, yield prediction, and price forecasting. The study uses remote sensing
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The economies of developing countries are mostly dependent on agriculture, with farming serving as many people’s primary source of income. This research aims to enhance agricultural productivity in three primary areas: crop recommendation, yield prediction, and price forecasting. The study uses remote sensing data and five different datasets to assess prediction in agribusiness. The performance strength is then assessed using statistical analysis and model parameters. The next step is to compare the results with earlier traditional machine learning techniques. Three main approaches are used in this study. (1) Hybrid technique for yield prediction: This method employs the Gradient Boosting Regressor, CatBoost Regressor, and Bagging Regressor to predict agricultural yield utilising the ensemble aggregation technique of stacking. (2) Yeo–Johnson transformer and multinomial logistic regression: A combination model is used to recommend appropriate crop varieties based on remote sensing data to improve precision agriculture. (3) deep Neural Network-based Price Forecasting: The study used deep neural network models, namely a Multi-Layer Perceptron (MLP), a novel application, to predict future crop market prices. The next stage uses real-time LIME deployment to produce fast forecasts. Lastly, there is a correlation between farm integration and workflow, business effect, and performance. This forecast study’s ultimate goal is to provide farmers with thorough crop prediction to meet the growing demand in the agricultural sector. By combining crop selection, production estimation, and market analysis into a single integrated system, the entire framework seeks to enable well-informed agricultural planning. We plan to develop a mobile application in the future that will provide users with access to a multitude of data, making it easier to anticipate different crops for the agricultural market at all times.
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Open AccessArticle
Effects of Medium Supplements on Embryogenesis and the Yield of Regenerants of Different Ploidy Levels from Unpollinated Ovules of Cucurbita pepo L.
by
Alexey Ermolaev, Elena Domblides, Kseniia Stebnitskaia and Olesya Valdeeva
Crops 2026, 6(4), 66; https://doi.org/10.3390/crops6040066 - 7 Jul 2026
Abstract
The aim of this work was to study the influence of various factors (sucrose concentration, silver nitrate, activated charcoal, and plant growth regulators 2.4-D (2.4-Dichlorophenoxyacetic Acid) and TDZ (Thidiazuron)) on the induction of gynogenesis and their effect on eight genotypes of summer squash
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The aim of this work was to study the influence of various factors (sucrose concentration, silver nitrate, activated charcoal, and plant growth regulators 2.4-D (2.4-Dichlorophenoxyacetic Acid) and TDZ (Thidiazuron)) on the induction of gynogenesis and their effect on eight genotypes of summer squash on the ploidy level of regenerated summer squash plants (Cucurbita pepo L.) in isolated ovule culture in vitro. IMC (Induction Medium for Cucurbitaceae) nutrient medium supplemented with 2 mg/L 2.4-D or 0.2 mg/L TDZ was used. It was shown that the optimal sucrose concentration for embryogenesis was 30 g/L; at 70 g/L, embryogenesis was absent. The addition of 10 mg/L AgNO3 in combination with 2.4-D in the genotype Faraon increased the frequency of embryogenesis up to 80%. It was found that a low concentration of activated charcoal (5 mg/L) together with TDZ increased the yield of embryoids by 8.5 times (68% embryogenesis) in the genotype Sangrum. Both growth regulators effectively induce embryogenesis, but their action strongly depends on the genotype and the composition of the nutrient medium. Flow cytometry analysis of 247 regenerant plants adapted to ex vitro conditions of the studied genotypes obtained in this study showed that diploids (2n) accounted for 47.2%, tetraploids (4n) 45.7%, triploids 3.7%, and octoploids 3.4%. Genotype-specificity of growth regulator action was demonstrated: in the genotypes Sangrum and Faraon, TDZ promoted a higher yield of tetraploids, while in the genotype Yakor, 2.4-D was more effective. The obtained tetraploid lines can be used to create seedless triploid hybrids without colchicine treatment. The developed combinations of factors will allow more efficient induction of gynogenesis in summer squash in vitro.
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(This article belongs to the Topic Applications of Biotechnology in Food and Agriculture)
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Open AccessArticle
Changes in the Physicochemical Characteristics and Antioxidant Activity of Saladette-Type Tomato (Solanum lycopersicum L.) Grown in Soil Supplemented with Zeolite
by
Jessica Lizbeth Ramirez-Tellez, Luis Delgado-Olivares, Nelly del Socorro Cruz-Cansino, Ernesto Alanis-García, Edgar Arturo Chávez-Urbiola and Esther Ramirez-Moreno
Crops 2026, 6(4), 65; https://doi.org/10.3390/crops6040065 - 3 Jul 2026
Abstract
The rapid pace of urbanization, coupled with the variability in climatic conditions, has led to a marked increase in global food demand. Simultaneously, this phenomenon has resulted in a decline in the overall quality of food, highlighting the need to improve existing agricultural
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The rapid pace of urbanization, coupled with the variability in climatic conditions, has led to a marked increase in global food demand. Simultaneously, this phenomenon has resulted in a decline in the overall quality of food, highlighting the need to improve existing agricultural production systems. In this context, zeolite has emerged as a promising soil amendment for optimizing its physical properties and crop yields. However, there is limited information on its effects during tomato cultivation, particularly for the Saladette variety (Solanum lycopersicum L.) in Hidalgo, Mexico. This includes the use of this zeolite variety, the evaluation of its antioxidant properties, and its antioxidant activity at different applied concentrations. This study evaluated the effect of different concentrations of zeolite applied to the soil on tomato growth and fruit quality. After crop establishment, the treatments were monitored monthly. The results showed that the application of zeolite significantly improved crop yield, with Treatment 3 (5 kg zeolite plant−1) showing the best performance without affecting the physical characteristics of the fruit. The tomatoes maintained adequate commercial standards, with weights ranging from 104 a 169 g, sizes from 5.16 to 6.20 cm, and firmness values between 1.19 and 2.27 N; therefore, this treatment was selected for the determination of the antioxidant activity on the fruits. Furthermore, an increase in antioxidant capacity was observed, reaching 5.50 µmol TE/100 g of dry sample in the DPPH antioxidant capacity test. This demonstrates that zeolite application positively influences the quality and antioxidant capacity of tomatoes. This suggests that zeolite could be used in various crops, potentially improving the quality of the final product and offering health benefits to consumers thanks to the antioxidant compounds generated during harvest. However, further studies are needed to determine the optimal application rates and the long-term effects on soil health and crop productivity.
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(This article belongs to the Topic Applications of Biotechnology in Food and Agriculture)
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Open AccessArticle
Placement and Rate of Cricket Frass Regulate Fertility Restoration and Chinese Kale Biomass in Tropical Acidic Sandy Soil
by
Supada Jumpol and Somchai Butnan
Crops 2026, 6(4), 64; https://doi.org/10.3390/crops6040064 - 3 Jul 2026
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The extent to which cricket frass placement and rate regulate fertility restoration and crop response in tropical acidic sandy soil remains insufficiently resolved. This greenhouse bioassay tested whether incorporated or surface-applied cricket frass differentially improved soil fertility and Chinese kale biomass, and whether
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The extent to which cricket frass placement and rate regulate fertility restoration and crop response in tropical acidic sandy soil remains insufficiently resolved. This greenhouse bioassay tested whether incorporated or surface-applied cricket frass differentially improved soil fertility and Chinese kale biomass, and whether these responses were rate-dependent. Cricket frass was applied by incorporation or surface placement at 3.125, 6.25, and 12.5 Mg (tonnes) ha−1 and compared with an unamended control. The frass had pH of 6.95, EC 19.6 mS cm−1, 10.7 g N kg−1, 8446 mg P kg−1, and 12,425 mg K kg−1 and a C:N ratio of 16.8. At 12.5 Mg ha−1, incorporation produced the greatest shoot dry biomass (7.16 g plant−1), exceeding surface placement (4.78 g plant−1) and the control (1.70 g plant−1). High-rate incorporation increased NH4+–N, net ammonification, available P, and microbial activity, reduced exchangeable acidity, and promoted greater nutrient uptake. Pearson correlation analysis showed that shoot biomass was strongly associated with plant nutrient uptake, soil P, pH, CEC, NH4+–N, and net ammonification, and was negatively associated with soil Al and exchangeable acidity. Both placement methods improved fertility and yield relative to the control, but incorporation was superior at the high rate. Surface placement remains useful where soil disturbance must be minimized, although field validation with larger soil volumes and rainfall-driven processes is required.
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Open AccessArticle
Auxin Treatment Enhances Adventitious Rooting While Genotype Modulates Root Elongation and Basal Callus Formation in Coffea arabica Cuttings
by
Jamil Delgado-Rafael, Raúl Vargas, Robin Oblitas-Delgado, Jois V. Carrion, Amilcar Valle-Lopez, Jhon Edler Lopez-Merino, Edinson Pooll Acuña-Ramirez, Jose Luis Pinedo-Mas, Eyner Huaman and Manuel Oliva-Cruz
Crops 2026, 6(4), 63; https://doi.org/10.3390/crops6040063 - 29 Jun 2026
Abstract
Adventitious rooting remains a major constraint for the clonal propagation of Coffea arabica, limiting the large-scale multiplication of elite genotypes. This study evaluated the effects of genotype, auxin treatment, and their interaction on adventitious rooting and basal callus formation in coffee cuttings
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Adventitious rooting remains a major constraint for the clonal propagation of Coffea arabica, limiting the large-scale multiplication of elite genotypes. This study evaluated the effects of genotype, auxin treatment, and their interaction on adventitious rooting and basal callus formation in coffee cuttings under controlled nursery conditions, while morphophysiological traits were assessed as complementary indicators of cutting performance. A completely randomized 3 × 3 factorial design was used, including three hybrids (H3, Excelencia, and Milenio) and three plant growth regulator (PGR) treatments: control, indole-3-butyric acid (IBA), and a commercial auxin formulation (RH; NAA + IBA). Rooting probability and root number were significantly affected by PGR treatment, whereas the longest root length was influenced by hybrid, PGR treatment, and their interaction. Model-estimated rooting probability increased from 4.76% in the control to 17.05% under IBA and 35.73% under RH. Similarly, the estimated number of roots per cutting increased from 0.14 in the control to 0.99 under IBA and 1.85 under RH. Although the hybrid × PGR interaction was not significant for rooting probability, the highest observed rooting percentage was recorded in H3 under RH (52.38%), followed by Milenio under RH (33.33%). For the longest root length, the strongest responses were observed under RH, particularly in Milenio (71.15 mm) and H3 (70.08 mm). Callus formation varied among treatments, but its association with rooting performance was weak and inconsistent. Morphophysiological traits provided complementary information on cutting status but were not interpreted as direct mechanistic drivers of rooting. These findings indicate that adventitious rooting in C. arabica was more closely associated with genotype-dependent responsiveness to exogenous auxin than with the extent of callus formation. However, anatomical studies are needed to determine the developmental origin of root primordia and their possible relationship with callus tissue.
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Open AccessArticle
Enhancement of Glucosinolate Content in Camelina sativa (L.) Crantz Sprouts
by
Incoronata Galasso, Sara Pozzo, Ida Melania Brambilla and Elena Ponzoni
Crops 2026, 6(4), 62; https://doi.org/10.3390/crops6040062 - 29 Jun 2026
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Camelina sativa sprouts were investigated as a source of glucosinolates (GLSs), and their modulation in response to germination time and elicitor treatments was evaluated. Total GLS content significantly decreased during sprouting, from 21.18 µmol/g DW in seeds to 0.75 µmol/g DW at 24
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Camelina sativa sprouts were investigated as a source of glucosinolates (GLSs), and their modulation in response to germination time and elicitor treatments was evaluated. Total GLS content significantly decreased during sprouting, from 21.18 µmol/g DW in seeds to 0.75 µmol/g DW at 24 days, with 5-day-old sprouts selected as the optimal harvest stage, with 8.82 ± 0.08 µmol g−1 DW. HPLC analysis identified three major aliphatic GLSs (GLS9, GLS10, GLS11), with GLS10 being the most abundant. Prior to treatment, tolerance assays showed that glucose (75 mM) and DL-methionine (2.5 mM) significantly increased total GLS content, whereas sulfur supplementation had no effect. Genotype-dependent responses were observed among Calena, Alan, and Pearl sprouts. Two-way ANOVA revealed a significant interaction between genotype and elicitor for total GLS content. Glucose and DL-methionine enhanced GLS accumulation in a cultivar-specific manner, with DL-methionine being more effective in Pearl, while Calena and Alan were more responsive to glucose. Sulfur treatments did not induce GLS accumulation in any genotype or condition tested. At the individual compound level, GLS9 was consistently increased by both elicitors, whereas GLS10 and GLS11 showed genotype and treatment-specific responses. Overall, these findings highlight the potential to increase the total GLS content in camelina sprouts through targeted elicitation and cultivar selection. By optimizing elicitor type, concentration, and timing, camelina sprouts could become a richer source of bioactive compounds.
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Open AccessEditor’s ChoiceArticle
Growth, Mineral Nutrition, and Yield Responses of Perilla frutescens to Bacillus- and Aspergillus-Based Amendments in Soils Affected by Radiocesium Contamination in Fukushima
by
Salem Djedidi, Hideki Ishii, Takehisa Kumagai, Naoto Nihei and Youji Nitta
Crops 2026, 6(4), 61; https://doi.org/10.3390/crops6040061 - 25 Jun 2026
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The Fukushima nuclear accident caused widespread radiocesium contamination, and subsequent decontamination reduced soil fertility by removing nutrient-rich topsoil. Although biological amendments have been widely investigated for soil improvement, their potential to restore crop productivity in decontaminated Fukushima soils remains poorly understood. This study
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The Fukushima nuclear accident caused widespread radiocesium contamination, and subsequent decontamination reduced soil fertility by removing nutrient-rich topsoil. Although biological amendments have been widely investigated for soil improvement, their potential to restore crop productivity in decontaminated Fukushima soils remains poorly understood. This study evaluated a Bacillus-based biofertilizer (Yume-Bio) and an Aspergillus fermentation product (kouji) as biological amendments for restoring crop productivity in decontaminated soils. Pot and field experiments were conducted to assess their effects on the growth, mineral nutrition, and seed yield of Perilla frutescens grown in decontaminated Fukushima soils. In pot experiments, Yume-Bio showed no significant effects on plant growth, although slight root improvement was observed. In contrast, application of kouji alone or in combination with Yume-Bio significantly enhanced plant growth, increasing leaf number by 112% and improving biomass production. Nutrient accumulation was also promoted, with total N and Fe increasing by 170% and 194%, respectively. In field experiments at two sites in Fukushima, treatment effects were limited and generally non-significant. These results indicate that kouji has potential to enhance plant growth under controlled conditions, while the effectiveness of biological amendments under field conditions remains site-dependent, highlighting the need to optimize application strategies under heterogeneous soil conditions.
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Open AccessArticle
Legume Performance in the Foloi Region (Western Greece): A First Step for Agricultural Revitalization in the Plateau
by
Ioannis Gazoulis, Aikaterini Kasimati, Nikolaos Antonopoulos, Panagiotis Kanatas, Metaxia Kokkini, Andreas Rekkas and Ilias Travlos
Crops 2026, 6(3), 60; https://doi.org/10.3390/crops6030060 - 22 Jun 2026
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Legume cultivation offers a chance for agricultural development on lands that have been abandoned over the years. In this study, simple agronomic indicators on the growth and yield of faba bean (Vicia faba L.), pea (Pisum sativum L.), and white lupin
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Legume cultivation offers a chance for agricultural development on lands that have been abandoned over the years. In this study, simple agronomic indicators on the growth and yield of faba bean (Vicia faba L.), pea (Pisum sativum L.), and white lupin (Lupinus albus L.) were assessed on the abandoned agricultural lands of Foloi Plateau in Western Greece. Field trials were conducted from October 2023 to July 2025, and the legumes were grown either according to the false seedbed concept or with conventional seedbed preparation practices (direct sowing). The false seedbed involves pre-sowing weed control following initial seedbed preparation, and in these trials, it suppressed weed density by 62–77%. The Normalized Difference Vegetation Index (NDVI) of faba bean and pea increased by 13% on the false seedbed plots, while white lupin NDVI was not affected by treatments (p ≥ 0.05). Destructive crop biomass measurements were in accordance with NDVI assessments. Faba bean and pea seed yield demonstrated an increase of 17% and 23%, respectively, in the false seedbed plots compared to direct sowing plots. White lupin seed yield was not significantly affected by false seedbed (p ≥ 0.05). This study provides preliminary evidence supporting the use of legume crops as a component of sustainable agricultural revitalization in the Foloi region. However, further research is required to optimize legume cultivation on the abandoned lands of the wider region as a first step towards the agricultural revitalization in the Plateau.
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