Agronomy

Research

10 pages, 485 KiB

Open AccessArticle

Seeding Rate Effects on Smooth Bromegrass (Bromus inermis Leyss.) Interseeded with Annual Warm-Season Grasses

by John A. Guretzky, Heidi Hillhouse and Keith R. Harmoney

Agronomy 2025, 15(4), 885; https://doi.org/10.3390/agronomy15040885 - 31 Mar 2025

Viewed by 229

Interseeding pastures with annual warm-season grasses may increase forage accumulation and nutritive value. Our objective was to evaluate the effects of seeding rates of crabgrass [Digitaria ischaemum (Schreb.) Schreb. Ex Muhl], sorghum–sudangrass (Sorghum bicolor × S. bicolor var. sudanense), and [...] Read more.

Interseeding pastures with annual warm-season grasses may increase forage accumulation and nutritive value. Our objective was to evaluate the effects of seeding rates of crabgrass [Digitaria ischaemum (Schreb.) Schreb. Ex Muhl], sorghum–sudangrass (Sorghum bicolor × S. bicolor var. sudanense), and teff [Eragrostis tef (Zuccagni) Trotter] on the forage accumulation and nutritive value of pastures of smooth bromegrass (Bromus inermis Leyss.), an introduced perennial cool-season grass cultivated for pasture and hay production in the U.S. Western Corn Belt. In spring, before interseeding, forage accumulation averaged 4.03 and 6.39 Mg ha⁻¹ in 2020 and 2021, respectively. In summer, after interseeding, forage accumulation averaged 3.52 Mg ha⁻¹ in 2020 but was not affected by treatment. In 2021, forage accumulation averaged 6.22 Mg ha⁻¹ in sorghum–sudangrass interseeded stands compared to 4.08 Mg ha⁻¹ in non-seeded smooth bromegrass. Interseeding crabgrass and teff had limited effects on forage accumulation and nutritive value. Increasing the seeding rate of sorghum–sudangrass linearly increased yield of crude protein, total digestible nutrients, and dry matter. In the next spring, forage accumulation averaged 8.01 Mg ha⁻¹, and the stands showed no residual effects of the one-time interseedings. Sorghum–sudangrass proved to be the optimum annual warm-season grass for interseeding. Full article

(This article belongs to the Special Issue Managing the Yield and Nutritive Value of Forage and Biomass Crops)

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18 pages, 6275 KiB

Open AccessArticle

Evaluation of Dual-Purpose Triticale: Grain and Forage Productivity and Quality Under Semi-Arid Conditions

by Lei Cui, Linyuan Xu, Huihui Wang, Xiangtian Fan, Chahong Yan, Yanming Zhang, Changtong Jiang, Tong Zhou, Qing Guo, Yu Sun, Feng Yang and Hongjie Li

Agronomy 2025, 15(4), 881; https://doi.org/10.3390/agronomy15040881 - 31 Mar 2025

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Abstract

Triticale (× Triticosecale Wittmack) is a valuable dual-purpose crop due to its adaptability to marginal environments and its potential for both high-quality grain and forage production. However, a comprehensive evaluation of its forage quality characteristics and agronomic performances is still needed. This study [...] Read more.

Triticale (× Triticosecale Wittmack) is a valuable dual-purpose crop due to its adaptability to marginal environments and its potential for both high-quality grain and forage production. However, a comprehensive evaluation of its forage quality characteristics and agronomic performances is still needed. This study evaluated the grain and forage yield potentials and nutritional compositions of 11 triticale genotypes over two consecutive years in a semi-arid region located in Shanxi province, China. Forage quality was assessed using several key parameters, including nutrient composition, fiber digestibility, mineral content, and energy density, while grain quality parameters, including nutrient composition as well as carbohydrate and fiber characteristics, were also analyzed. Significant genetic variation was observed in these traits, indicating the influence of genotype–environment interactions on these traits. The tested genotypes exhibited grain yields ranging from 4.83 to 6.92 t ha⁻¹ and fresh forage biomass yields between 20.06 and 29.78 t ha⁻¹, demonstrating their potential for sustainable forage and grain production under semi-arid conditions. Genotypes from our breeding programs, including Shengnongsicao 1 and Jinsicao 1, demonstrated superior adaptability, maintaining stable forage and grain yield potentials under adverse conditions. Their favorable nutritional characteristics further enhance their suitability for semi-arid livestock systems. High levels of essential minerals, particularly calcium and potassium, further enhanced the nutritional value of these genotypes. These results provide valuable insights for triticale breeding programs and suggest triticale’s potential as a reliable crop in semi-arid regions, where maximizing land productivity is essential. Full article

(This article belongs to the Special Issue Managing the Yield and Nutritive Value of Forage and Biomass Crops)

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13 pages, 401 KiB

Open AccessArticle

Effects of Different Sowing Times and Harvesting Stages on Dry Matter Yield, Quality, and Mineral Content of Teff (Eragrostis teff [Zucc.] Trotter)

by Sebiha Erol Uyanik and Emine Budakli Carpici

Agronomy 2025, 15(2), 457; https://doi.org/10.3390/agronomy15020457 - 13 Feb 2025

Viewed by 535

Abstract

This study aimed to identify the effects of different sowing times and harvesting stages on the dry matter yield, quality, and mineral content of teff (Eragrostis teff [Zucc.] Trotter). The study was conducted in 2021 and 2022 using a randomized block-split plot [...] Read more.

This study aimed to identify the effects of different sowing times and harvesting stages on the dry matter yield, quality, and mineral content of teff (Eragrostis teff [Zucc.] Trotter). The study was conducted in 2021 and 2022 using a randomized block-split plot design with three replications. According to the two-year averages, plant height increased on the 1 June sowing time compared to 15 May, and there was more dry matter yield (4962.94 kg ha⁻¹) and crude protein yield (717.48 kg ha⁻¹) per unit area. Additionally, the crude protein content of the teff (156.30 g kg⁻¹) increased, whereas the NDF content (652.38 g kg⁻¹) decreased in the 1 June sowing time. Dry matter accumulation increased depending on the progress of the plant development periods, and, as a result, the late heading stage yielded the highest dry matter (5610.00 kg ha⁻¹) and crude protein (615.90 kg ha⁻¹). The crude protein content reached the highest level in the early heading stage, and the crude protein yield peaked at the highest level in the late heading stage since the yield per unit area was higher. While sowing times changed the Mg and Zn contents of teff, the extended harvesting stages resulted in significant variations in the P, K, Zn, Fe, Cu, and Na contents of teff grass. The highest identified P, K, Zn, Fe, and Na contents were in the booting stage, whereas the highest Cu content was in the early heading stage. The amount of various mineral compounds was higher in the early development periods; however, they were still sufficient to meet the needs of sheep and cattle throughout the early and late heading stages. Based on the study findings regarding high yield and quality, it is reasonable to recommend sowing teff grass in June and harvesting in the early heading stage under Mediterranean climatic conditions. Full article

(This article belongs to the Special Issue Managing the Yield and Nutritive Value of Forage and Biomass Crops)

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13 pages, 1443 KiB

Open AccessArticle

Sowing Rates and Methods Affect Yield and Forage Quality of American Jointvetch in the Southwestern Area of Japan

by Manabu Tobisa and Yutaka Nakano

Agronomy 2024, 14(12), 2963; https://doi.org/10.3390/agronomy14122963 - 12 Dec 2024

Viewed by 792

Abstract

This research aimed to assess how different sowing methods and seeding rates influenced the growth, yield characteristics, and forage nutritional value for establishing American jointvetch, a tropical forage legume known for its high productivity and quality, in grasslands in southwestern Japan. The experimental [...] Read more.

This research aimed to assess how different sowing methods and seeding rates influenced the growth, yield characteristics, and forage nutritional value for establishing American jointvetch, a tropical forage legume known for its high productivity and quality, in grasslands in southwestern Japan. The experimental treatments involved two sowing methods, row sowing (RS) and broadcast sowing (BS), and combinations of four different seeding rates (SR, 5, 10, 20, or 30 kg ha⁻¹). The sowing methods affected dry matter yield (DMY): BS resulted in higher DMY (11.3 vs. 8.7 t DM ha⁻¹) and leaf area index (LAI, 7.2 vs. 5.3) than RS, respectively. However, in vitro dry matter digestibility (IVDMD) and crude protein (CP) concentrations were not influenced by the sowing methods. The SR affected LAI, particularly RS, and LAI increased with increasing SR. Contrary to expectations, SR did not affect DMY, IVDMD, CP, digestible DMY, or CP yield. The findings of this investigation indicate that broadcast sowing is the superior method for planting, and even when using a reduced seeding rate of 5 kg ha⁻¹ of seed-in-pod, there was no significant impact on the yield or forage quality of American jointvetch under the conditions examined in this study. This information will contribute to the proper management of its cultivation to ensure higher productivity for use as livestock fodder. Full article

(This article belongs to the Special Issue Managing the Yield and Nutritive Value of Forage and Biomass Crops)

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15 pages, 765 KiB

Open AccessArticle

The Influence of Competition Between Festuca arundinacea Schreb. and Trifolium pratense L., Grown in Simple Mixtures, on the Quality of the Fodder

by Vasile Vîntu, Teodora Zaiț Grapan, Costel Samuil and Adrian-Ilie Nazare

Agronomy 2024, 14(12), 2934; https://doi.org/10.3390/agronomy14122934 - 9 Dec 2024

Viewed by 823

Abstract

The aim of this research carried out in the period 2021–2023 was to analyse the influence of competitiveness between Festuca arundinacea Schreb. and Trifolium pratense L., cultivated in simple mixtures, on the quality of the fodder obtained, under the conditions of the northern [...] Read more.

The aim of this research carried out in the period 2021–2023 was to analyse the influence of competitiveness between Festuca arundinacea Schreb. and Trifolium pratense L., cultivated in simple mixtures, on the quality of the fodder obtained, under the conditions of the northern Romanian forest steppe. In the experiment organized at the Ezăreni Student Research and Practice Station of Iasi University for Life Sciences, at an altitude of 117 m, with coordinates 47°07′27″ N latitude and 27°30′25″ E longitude, on a cambic chernozem soil, with 2.40% humus, 0.178% Nt, 26 ppm P_AL and 242 ppm K in the 0–30 cm layer, two factors were studied, namely the cultivation system used, with five graduations: a₁—Festuca arundinacea Schreb. (100%—control); a₂—Festuca arundinacea Schreb. (75%) and Trifolium pratense L. (25%); a₃—Festuca arundinacea Schreb. (50%) and Trifolium pratense L. (50%); a₄—Festuca arundinacea Schreb. (25%) and Trifolium pratense L. (75%); and a₅—Trifolium pratense L. (100%), and mineral fertilization, with five graduations, respectively: b₁—unfertilized (control), b₂—N₅₀P₅₀; b₃—N₇₅P₇₅; b₄—N₁₀₀P₁₀₀; and b₅—N₁₅₀P₁₅₀. The obtained results showed that the process of interspecific competitiveness was greatly influenced by the percentage of participation in the sowing norm of the species in the mixture and the biological peculiarities of the species under study, as well as the climatic conditions specific to each agricultural year, with consequences for the quality of the feed. The crude protein quantity (Q_CP) obtained in the mixture of Festuca arundinacea Schreb. (25%) and Trifolium pratense L. (75%), fertilized with N₁₅₀P₁₅₀, was higher by 788.7 kg·ha⁻¹ than that in the control variant, represented by the Festuca arundinacea Schreb. species (100%), unfertilized. The lowest values of NDF (neutral detergent fiber) and ADF (acid detergent fiber) were recorded in the variants where the Trifolium pratense L. species was present and low doses of mineral fertilizers were used, determining a better quality of the forage. In the third year of vegetation, relative forage quality (RFQ) had values of 113.7 in the variant represented by the mixture of Festuca arundinacea Schreb. (25%) + Trifolium pratense L. (75%), unfertilized, and only 91.2 in the variant represented by the Festuca arundinacea Schreb. species (100%), fertilized with N₁₅₀P₁₅₀. Full article

(This article belongs to the Special Issue Managing the Yield and Nutritive Value of Forage and Biomass Crops)

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11 pages, 1364 KiB

Open AccessArticle

How Long Should Grasses of South American Campos Grasslands Rest for Stockpiling Forage?

by Marlon Risso Barbosa, Martín Durante, Luciana Marin, Fiorella Cazzuli, Fernando Luiz Ferreira de Quadros, Rob M. Dixon, Franklin Riet Correa and Martin Jaurena

Agronomy 2024, 14(8), 1790; https://doi.org/10.3390/agronomy14081790 - 14 Aug 2024

Viewed by 826

Abstract

Stockpiling forage (i.e., deferring grazing) is one way to provide forage for livestock during intervals of low pasture growth, but there are trade-offs as nutrient content declines with increasing forage maturity. Phosphorous (P) concentration, crude protein (CP) content and organic matter digestibility (OMD) [...] Read more.

Stockpiling forage (i.e., deferring grazing) is one way to provide forage for livestock during intervals of low pasture growth, but there are trade-offs as nutrient content declines with increasing forage maturity. Phosphorous (P) concentration, crude protein (CP) content and organic matter digestibility (OMD) were evaluated in two C3 and four C4 grasses native to the South American Campos grasslands. These were: Bromus auleticus (BROAUL) and Nasella neessiana (NASNEE) as C3 grasses and Andropogon lateralis (ANDLAT), Mnesithea selloana (MNESEL), Paspalum dilatatum (PASDIL), and Paspalum notatum (PASNOT) as C4 grasses. The grasses were grown in pots during five stockpiling periods (450, 900, 1350, 1800 and 2250 degree days, approximately 20, 40, 60, 80 and 100 days). As the forage deferment increased, the nutritional value decreased more in C4 than in C3 grasses. Short rest periods (approximately 40 days) are recommended for PASDIL and MNESEL, and medium rest periods (approximately 80 days) for ANDLAT and PASNOT. However, the C3 grasses BROAU and NASNEE maintained high P and CP concentrations and may be the most appropriate option for long rest periods (≥100 days). This information is important to manage different Campos grassland communities for the optimal rest period according to the dominant species. Full article

(This article belongs to the Special Issue Managing the Yield and Nutritive Value of Forage and Biomass Crops)

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14 pages, 1414 KiB

Open AccessArticle

Improving Total Mixed Ration Silage: Effects of Lactic Acid Bacteria Inoculants and Antimicrobial Additives on Fermentation Quality and Aerobic Stability

by Xinbao Li, Yuanzhen Cheng, Feifei Yang, Junfeng Hu, Rui Ma, Haopeng Liu and Tao Shao

Agronomy 2024, 14(8), 1602; https://doi.org/10.3390/agronomy14081602 - 23 Jul 2024

Cited by 2 | Viewed by 1575

Abstract

This work aimed to assess microbial inoculants (Lactiplantibacillus plantarum and Lentilactobacillus buchneri), chemical additives (natamycin and hexanoic acid), and their combination on fermentation characteristics and aerobic stability in total mixed ration (TMR) silage. The TMR consisted of 30% water bamboo shell [...] Read more.

This work aimed to assess microbial inoculants (Lactiplantibacillus plantarum and Lentilactobacillus buchneri), chemical additives (natamycin and hexanoic acid), and their combination on fermentation characteristics and aerobic stability in total mixed ration (TMR) silage. The TMR consisted of 30% water bamboo shell (WBS), 10% alfalfa, 20% rice straw, and 40% concentrate. There were six treatments as follows: (1) deionized water (control, CON). (2) lactic acid bacteria (Lactiplantibacillus plantarum + Lentilactobacillus buchneri; LPB, 1 × 10⁶ cfu/g FW). (3) natamycin (NT, 0.02 g/kg FW). (4) hexanoic acid (HA, 0.02 g/kg FW). (5) lactic acid bacteria + natamycin (SLNT, 0.02 g/kg FW). (6) lactic acid bacteria + hexanoic acid (SLHA, 0.02 g/kg FW). After fermentation, laboratory silos (10 L) were opened to assess fermentation quality, followed by a 6-day aerobic stability test. The results showed that all silages were well fermented with high lactic acid (LA) content, low ammonia nitrogen (NH₃-N), and negligible butyric acid (BA) levels. Among all silages, SLNT silage exhibited the greatest LA, acetic acid (AA) levels, LAB counts, and the lowest pH and NH₃-N. For aerobic stability, all additives significantly (p < 0.05) enhanced aerobic stability, delayed (p < 0.05) the decrease in LA and water-soluble carbohydrates (WSC) and the increase in pH, and significantly (p < 0.05) minimized yeast proliferation. The SLNT silage showed the best aerobic stability, with SLHA, NT, HA, and LPB following. In conclusion, SLNT is recommended as the optimal additive in improving the fermentation quality and aerobic stability of TMR silage, with SLHA, NT, HA, and LPB following. Full article

(This article belongs to the Special Issue Managing the Yield and Nutritive Value of Forage and Biomass Crops)

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20 pages, 2470 KiB

Open AccessArticle

Alfalfa Cultivation Patterns in the Yellow River Irrigation Area on Soil Water and Nitrogen Use Efficiency

by Qiang Lu, Guangping Qi, Minhua Yin, Yanxia Kang, Yanlin Ma, Qiong Jia, Jinghai Wang, Yuanbo Jiang, Chen Wang, Yalin Gao, Rongrong Tian, Feng Xiao, Xiaolong Chen and Rong Zhang

Agronomy 2024, 14(4), 874; https://doi.org/10.3390/agronomy14040874 - 22 Apr 2024

Cited by 2 | Viewed by 1795

Abstract

Establishing lucerne field is an efficient way to protect natural steppes, alleviate conflicts between meadows and livestock, and promote the development of animal husbandry. However, problems such as extensive field management, valuing yield over quality, and low resource utilization are endemic in production. [...] Read more.

Establishing lucerne field is an efficient way to protect natural steppes, alleviate conflicts between meadows and livestock, and promote the development of animal husbandry. However, problems such as extensive field management, valuing yield over quality, and low resource utilization are endemic in production. Exploring reasonable cultivation patterns can contribute to improving the current situation of artificial grassland production and promoting the high-quality development of husbandry and prataculture. Lucerne the field experiment was carried out in Jingtai, Gansu Province, China in 2021–2022; this study compared and analyzed the effects of three cultivation patterns—ridge tillage with plastic film mulching (PM), ridge tillage with biodegradable film mulching (BM), and traditional flat planting (FP)—on soil water, heat, and fertilizer, as well as lucerne growth, yield, quality, and water and nitrogen use efficiency. The results show that: (1) during the growth period of lucerne, PM and BM treatments augment the average moisture content of the soil layer of 0–120 cm by 31.19% and 24.03% compared to the FP treatment, respectively. In the soil layer of 0–40 cm, PM and BM treatments abate the soil moisture content of the ridges by an average of 19.29% and 7.89% compared to that in the ditches, respectively. In the soil layer of 40–120 cm, PM and BM treatments elevate the soil moisture content of the ridges by 4.40% and 4.65% on average compared to that in the ditches, respectively. The average soil temperature in a soil layer of 5–25 cm shows PM > BM > FP. In contrast with the FP treatment, PM and BM treatments increase the soil temperature of the ridges by an average of 1.87 °C and 0.96 °C and decrease that of the ditches by an average of 0.47 °C and 0.46 °C, respectively. After two years of planting, the three cultivation patterns all promote the soil nutrient content. Compared to the FP treatment, PM and BM treatments increase the organic matter content by 9.94% and 19.94%, respectively. (2) Ridge tillage with film mulching can evidently stimulate the growth of lucerne and enhance yield and quality. Compared to the FP treatment, PM and BM treatments enhance plant height by an average of 15.37% and 4.04%, stem diameter by an average of 34.14% and 14.58%, yield by an average of 21.20% and 14.77%, crude protein content by an average of 13.47% and 7.68%, and relative feed value by an average of 8.71% and 4.41%, respectively. (3) During the two-year growing period, the irrigation amount of lucerne was 508.60–615.30 mm, and the evapotranspiration was 563.70–761.80 mm. Compared to the FP treatment, PM and BM treatments hoist water use efficiency by an average of 43.50% and 17.56%, nitrogen partial factor productivity by an average of 21.20% and 15.22%, and net income by an average of 14.78% and 11.05%, respectively. In summary, in ridge tillage, both ordinary film mulching and biodegradable film mulching can create a favorable soil environment for lucerne growth and heighten production effect. The former has a better effect on advancing the lucerne production effect, and the latter exhibits superior performance in improving soil fertility. Full article

(This article belongs to the Special Issue Managing the Yield and Nutritive Value of Forage and Biomass Crops)

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15 pages, 2172 KiB

Open AccessArticle

Quality Production of Sainfoin Swards Challenged by Global Change in Mountain Areas in the Western Mediterranean

by M.-Teresa Sebastià, Fatemeh Banagar, Noemí Palero, Mercedes Ibáñez and Josefina Plaixats

Agronomy 2024, 14(1), 6; https://doi.org/10.3390/agronomy14010006 - 19 Dec 2023

Cited by 3 | Viewed by 1720

Abstract

Legume-based livestock forage systems are widespread and socially relevant agroecosystems that are essential for delivering high-quality forage. Therefore, it is critical to determine how climate change and management might affect the functioning of forage agroecosystems. The objective of this study was to explore [...] Read more.

Legume-based livestock forage systems are widespread and socially relevant agroecosystems that are essential for delivering high-quality forage. Therefore, it is critical to determine how climate change and management might affect the functioning of forage agroecosystems. The objective of this study was to explore the potential of sainfoin swards under different management regimes by combining results from an experiment on species diversity effects on yield developed under extreme climatic conditions and a survey of sainfoin (Onobrychis viciifolia Scop.) swards and nutritive value in mountain regions in Catalonia, Western Mediterranean. Our results show that 12–59% of the variability in forage nutritive value parameters was accounted for by management. Young cattle-grazed swards showed higher nutrition quality that decreased faster than sheep-grazed or only mown swards. Mixing sainfoin with orchardgrass increased fiber content (e.g., +22% neutral detergent fiber) and decreased protein (−26%) and lignin (−11%) compared to sainfoin monocultures. However, under the extreme climatic conditions of the last three years, the only diversity effect found on yield was the identity of the species present. We propose that a combination of different sainfoin management regimes might be beneficial regionally for both quality forage production and overall biodiversity conservation, whereas traditional systems may be vulnerable to changing climatic conditions. Full article

(This article belongs to the Special Issue Managing the Yield and Nutritive Value of Forage and Biomass Crops)

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20 pages, 2400 KiB

Open AccessArticle

Ameliorating Forage Crop Resilience in Dry Steppe Zone Using Millet Growth Dynamics

by Almas Kurbanbayev, Meisam Zargar, Hristina Yancheva, Gani Stybayev, Nurlan Serekpayev, Aliya Baitelenova, Nurbolat Mukhanov, Adilbek Nogayev, Balzhan Akhylbekova and Mostafa Abdelkader

Agronomy 2023, 13(12), 3053; https://doi.org/10.3390/agronomy13123053 - 13 Dec 2023

Cited by 3 | Viewed by 1616

Abstract

Introducing new forage crops such as Japanese millet (Echinochloa frumentacea) and pearl millet (Pennisetum glaucum) is crucial for mitigating the impacts of climate change in the dry steppe zone, expanding forage crop options, and obtaining nutritious feed for the [...] Read more.

Introducing new forage crops such as Japanese millet (Echinochloa frumentacea) and pearl millet (Pennisetum glaucum) is crucial for mitigating the impacts of climate change in the dry steppe zone, expanding forage crop options, and obtaining nutritious feed for the development of animal husbandry. The aim of this study was to assess the productivity and feed value of these crops. Field experiments were conducted in 2021 and 2022 to investigate the changes and variations in the yields and chemical compositions of Japanese millet and pearl millet when grown as sole crops or in mixed cropping in the dry steppe zone of northern Kazakhstan. Among the annual crops sown via sole cropping, the hay of the Japanese millet, sown in the third decade of May and harvested during full heading, was observed to have a higher content of raw protein and other nutrients than Sudanese grass hay, that is, the raw protein content was higher at 1.81%, the raw oil content at 0.12, and the raw ash content at 1.88%. In addition, among the mixtures of crops, the hay of the crop mixtures containing pearl millet, sown in the above period and harvested as hay during the milky stage, the full heading stage, and the formation of spikelets in the grain family stage, differed from the hay of Sudanese grass sown in the same period and collected during full heading in terms of the contents of raw protein and other nutrients and the low content of raw ash, that is, the content of raw protein was at 2.16%, raw oil at 0.39, raw ash at 0.95, without nitrogen extractives (WNEs) at 3.78, and starch at 0.11. The calcium content was higher by 0.08% and carotene by 0.11 mg/kg, and raw lentils were lower by 0.94%. The analysis of the results revealed that the variation in the crops’ phenological phases depended on the moisture availability and the sowing time. Full article

(This article belongs to the Special Issue Managing the Yield and Nutritive Value of Forage and Biomass Crops)

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18 pages, 2373 KiB

Open AccessArticle

Intercropping Forage Sorghum with Sunnhemp at Different Seeding Rates to Improve Forage Production

by Haley M. Mosqueda, Brock C. Blaser, Susan A. O’Shaughnessy and Marty B. Rhoades

Agronomy 2023, 13(12), 3048; https://doi.org/10.3390/agronomy13123048 - 13 Dec 2023

Viewed by 1632

Abstract

Forage sorghum (Sorghum bicolor (L.) Moench) is well established in the Texas High Plains as a drought-tolerant forage that often requires additional feed to provide adequate protein for livestock. Intercropping sunnhemp (Crotalaria juncea L.), a legume, with forage sorghum, may increase [...] Read more.

Forage sorghum (Sorghum bicolor (L.) Moench) is well established in the Texas High Plains as a drought-tolerant forage that often requires additional feed to provide adequate protein for livestock. Intercropping sunnhemp (Crotalaria juncea L.), a legume, with forage sorghum, may increase crude protein. However, the optimal intercrop seeding ratio of sunnhemp to sorghum to improve crude protein content and maintain sufficient biomass is unknown. A two-year field experiment was conducted near Canyon, TX, USA, in 2020 and 2021 using sunnhemp intercropped at three seeding rates (16.8, 33.6, and 50.4 kg ha⁻¹) with forage sorghum at four seeding rates (0, 2.8, 5.6, and 11.2 kg ha⁻¹) under drip irrigation. This study was conducted to (1) evaluate growth potential for sunnhemp in a semiarid environment, (2) find a seeding ratio that can maintain forage sorghum dry matter production and improve forage quality, and (3) determine if a midseason harvest can be supported and further improve quality of the forage produced. Midseason, full-season, regrowth biomass, and forage quality were evaluated. Results indicated that a sunnhemp–forage-sorghum intercrop produced dry matter comparable to forage sorghum when sufficient heat units were obtained in the growing season. Forage with higher nutritive value was produced when the intercrop was harvested twice. Full article

(This article belongs to the Special Issue Managing the Yield and Nutritive Value of Forage and Biomass Crops)

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17 pages, 322 KiB

Open AccessArticle

Performance and Economic Evaluation of Low-Lignin Alfalfa ‘Hi-Gest^® 360’ in Saskatchewan Canada

by Daalkhaijav Damiran, Kathy Larson, Bill Biligetu, Jourdyn Sammons and Herbert Lardner

Agronomy 2022, 12(12), 3077; https://doi.org/10.3390/agronomy12123077 - 5 Dec 2022

Cited by 5 | Viewed by 1635

Abstract

A three-year (2018–2020) study was conducted in Lanigan (Thin Black soil zone) and Saskatoon (Dark Brown soil zone), SK Canada to compare low-lignin alfalfa (Medicago sativa) cv. Hi-Gest^® 360 (HiGest) with alfalfa- cv. AC Grazeland (Grazeland) in monoculture and binary [...] Read more.

A three-year (2018–2020) study was conducted in Lanigan (Thin Black soil zone) and Saskatoon (Dark Brown soil zone), SK Canada to compare low-lignin alfalfa (Medicago sativa) cv. Hi-Gest^® 360 (HiGest) with alfalfa- cv. AC Grazeland (Grazeland) in monoculture and binary mixtures with hybrid bromegrass (HBG; cv. AC Success) for forage yield, nutrient profile, and establishment costs. Field plots were seeded in August 2017. Stands were harvested at three maturity stages of alfalfa (1 = 10% bloom; 2 = 40% bloom; and 3 = 100% bloom). Compared to Grazeland, HiGest alfalfa yielded 25% less in Saskatoon in monoculture, but no difference was found in Lanigan. Averaged across two sites, HiGest had 8.6% less acid detergent lignin (6.51 vs. 5.95%) and 10.3% greater in vitro neutral detergent fiber digestibility (42.7 vs. 38.7% of neutral detergent fiber). In the binary mixtures, however, differences in yield and quality between the two alfalfas were negligible. The stand establishment costs averaged 300 Canadian dollar (CAD) ha⁻¹, 205 CAD ha⁻¹, 260 CAD ha⁻¹, and 303 CAD ha⁻¹ for HiGest, Grazeland, Grazeland-HBG, and HiGest-HBG, respectively. Hi-Gest^® 360 alfalfa could provide higher digestible nutrients when it was used as a monoculture and could maintain quality better into later maturing stages. However, the higher seed price, and no actual advantage in mixtures may delay its adoption. Full article

(This article belongs to the Special Issue Managing the Yield and Nutritive Value of Forage and Biomass Crops)

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