Navigating the Future of Agriculture: Balancing the Benefits and Challenges of Alternative Plant Nutrition Methods

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Nutrition".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 1088

Special Issue Editors


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Guest Editor
Institute of Food Science, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, H-4032 Debrecen, Hungary
Interests: abiotic stress; antioxidative enzymes; biofertilizers/biostimulants; biotic stress; free radicals; plant nutrients
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Guest Editor
Institute of Plant Science, Faculty of Natural and Agricultural Science, University of the Free State, Bloemfontein 9300, South Africa
Interests: abiotic stress; antioxidative enzymes; biofertilizers/biostimulants; osmolytes; non-destructive stress detection measurements; drought stress; heat stress; free radicals
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Agricultural Sciences and Environmental Management, Institute of Engineering and Agricultural Sciences, University of Nyíregyháza, Sóstói Str. 31/b, H-4400 Nyíregyháza, Hungary
Interests: microanatomy/ultrastructure of plant organs; micromorphological-anatomical adaptive ability of vegetative organs; histological changes; abiotic stress; potentially toxic element; alternative plant nutrient methods

Special Issue Information

Dear Colleagues,

Alternative plant nutrition methods offer several advantages and disadvantages compared to traditional soil-based cultivation with chemical fertilizers. They offer promising solutions to address sustainability challenges in agriculture, providing efficient resource use and reduced environmental impact. However, they also present technical, economic, and operational challenges that require careful consideration and investment. The choice of nutrition method used depends on specific goals, local conditions, and the scale of production, balancing potential benefits with practical limitations. Some of the advantages of using alternative plant nutrition methods and materials include environmental sustainability, improved nutrient efficiency, reduced pest and disease pressure, and diverse applications and adaptability. On the other hand, in using alternative nutrient methods, we should also consider the risk of system failures, limited crop variety and market acceptance, dependency on external resources, regulatory and certification challenges, and maybe higher initial levels of investment. The certification process for a new nutrient material or method is lengthy and begins with assessing its effects on plants. This Special Issue of Plants welcomes research articles, reviews, and short communications related to the investigation of the effects of alternative plant nutrient materials and methods on plants. In addition, multidisciplinary studies, including systems biology, molecular biology, and genetic, physiological, and biochemical approaches, are also appreciated.

Dr. Brigitta Tóth
Dr. Makoena Joyce Moloi
Dr. Csilla Tóth
Guest Editors

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Keywords

  • alternative nutrients
  • antioxidant system
  • micromorphological changes in plants
  • plants’ responses
  • stress mitigation

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Published Papers (1 paper)

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Research

19 pages, 2441 KiB  
Article
Unveiling the Impact of Organic Fertilizer on Rice (Oryza sativa L.) Salinity Tolerance: Insights from the Integration of NDVI and Metabolomics
by Jiaolong Li, Yunluo Li, Qiyun Xu, Xiaolei Niu, Guangping Cao and Hongyan Liu
Plants 2025, 14(6), 902; https://doi.org/10.3390/plants14060902 - 13 Mar 2025
Viewed by 678
Abstract
Soil salinization threatens global agriculture, reducing crop productivity and food security. Developing strategies to improve salt tolerance is crucial for sustainable agriculture. This study examines the role of organic fertilizer in mitigating salt stress in rice (Oryza sativa L.) by integrating NDVI [...] Read more.
Soil salinization threatens global agriculture, reducing crop productivity and food security. Developing strategies to improve salt tolerance is crucial for sustainable agriculture. This study examines the role of organic fertilizer in mitigating salt stress in rice (Oryza sativa L.) by integrating NDVI and metabolomics. Using salt-sensitive (19X) and salt-tolerant (HHZ) cultivars, we aimed to (1) evaluate changes in NDVI and metabolite content under salt stress, (2) assess the regulatory effects of organic fertilizer, and (3) identify key metabolites involved in stress response and fertilizer-induced regulation. Under salt stress, survival rate of the 19X plants dropped to 6%, while HHZ maintained 38%, with organic fertilizer increasing survival rate to 25% in 19X and 66% in HHZ. NDVI values declined sharply in 19X (from 0.56 to <0.25) but remained stable in HHZ (~0.56), showing a strong correlation with survival rate (R2 = 0.87, p < 0.01). NDVI provided a dynamic, non-destructive assessment of rice health, offering a faster and more precise evaluation of salt tolerance than survival rate analysis. Metabolomic analysis identified 12 key salt-tolerant metabolites, including citric acid, which is well recognized for regulating salt tolerance. HTPA, pipecolic acid, maleamic acid, and myristoleic acid have previously been reported but require further study. Additionally, seven novel salt-tolerant metabolites—tridecylic acid, propentofylline, octadeca penten-3-one, 14,16-dihydroxy-benzoxacyclotetradecine-dione, cyclopentadecanolide, HpODE, and (±)8,9-DiHETE—were discovered, warranting further investigation. Organic fertilizer alleviated salt stress through distinct metabolic mechanisms in each cultivar. In 19X, it enhanced antioxidant defenses and energy metabolism, mitigating oxidative damage and improving fatty acid metabolism. In contrast, HHZ primarily benefitted from improved membrane stability and ion homeostasis, reducing lipid peroxidation and oxidative stress. These findings primarily support the identification and screening of salt-tolerant rice cultivars while also highlighting the need for cultivar-specific fertilization strategies to optimize stress resilience and crop performance. Based on the correlation analysis, 26 out of 53 differential metabolites were significantly correlated with NDVI, confirming a strong association between NDVI shifts and key metabolic changes in response to salt stress and organic fertilizer application. By integrating NDVI and metabolomics, this study provides a refined method for evaluating salt stress responses, capturing early NDVI changes and key salinity stress biomarkers. This approach may prove valuable for application in salt-tolerant variety screening, precision agriculture, and sustainable farming, contributing to scientific strategies for future crop improvement and agricultural resilience. Full article
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