Nitrogen Application in Sainfoin under Rain‐Fed Conditions in Wyoming: Productivity and Cost Implications

Sintim, Henry Y.; Adjesiwor, Albert T.; Zheljazkov, Valtcho D.; Islam, M. Anowarul; Obour, Augustine K.

doi:10.2134/agronj2015.0317

Cited by 10 publications

(7 citation statements)

References 32 publications

(48 reference statements)

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“…and birdsfoot trefoil ( Lotus corniculatus L.) are resistant to alfalfa weevil, are nonbloating, produce high forage accumulation, have adequate nutritive value, and therefore have the potential to be alternatives to alfalfa. Sainfoin has been evaluated for adaptation and yield performance and has been found to be a good perennial forage legume for conditions in Wyoming (Gray et al, 2006; Sintim et al, 2016). There is, however, no current information on forage species that maintain good balance with sainfoin to improve its yield and persistence in Wyoming.…”

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Grass‐Legume Seed Mass Ratios and Nitrogen Rates Affect Forage Accumulation, Nutritive Value, and Profitability

et al. 2017

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Grass‐legume mixtures are considered viable alternatives to nitrogen (N)‐fertilized grass pastures, but there is a dearth of information on effects of seed mass ratios on productivity and economic returns. We evaluated the effects of grass‐legume seed mass ratios and N fertilizer rates on forage accumulation, nutritive value, and profitability. There were 15 treatments arranged in randomized complete blocks with four replicates. The treatments included four species (meadow bromegrass [Bromus biebersteinii Roem. & Schult] and three legumes—alfalfa [Medicago sativa L.], sainfoin [Onobrychis viciifolia Scop.], and birdsfoot trefoil [Lotus corniculatus L.]), various seed mass ratios (100:0, 50:50, 70:30, 50:25:25, and 50:16.7:16.7:16.7), and three rates of N (0, 56, and 112 kg N ha−1) applied only to meadow bromegrass monocultures. The 2‐yr average annual forage accumulation of meadow bromegrass receiving 112 kg N ha−1 was 6.89 Mg ha−1 yr−1, which was similar to the 30% alfalfa + 70% meadow bromegrass, 30% birdsfoot trefoil + 70% meadow bromegrass, 25% alfalfa + 25% birdsfoot trefoil + 50% meadow bromegrass, and 50:16.7:16.7:16.7 mixture treatments. Mixtures had greater nutritive value than N‐fertilized meadow bromegrass. All treatments except 100% sainfoin and 50% sainfoin + 50% meadow bromegrass treatments were profitable. On the basis of forage accumulation, nutritive value, and profitability, the 30% alfalfa + 70% meadow bromegrass and 30% birdsfoot trefoil + 70% meadow bromegrass seed mass ratios are simple mixtures that may be viable alternatives to 100% alfalfa and N‐fertilized meadow bromegrass monocultures.

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Grass‐Legume Seed Mass Ratios and Nitrogen Rates Affect Forage Accumulation, Nutritive Value, and Profitability

et al. 2017

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“…Mowrey and Volesky () noted that sainfoin needed N fertilization, as symbiotic N 2 fixation was not sufficient. Sintim, Adjesiwor, Zheljazkov, Anowarul Islam, and Obour () found that while there was a linear yield response to N fertilization, N fertilization under rain‐fed conditions in Wyoming was not profitable.…”

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Sainfoin production in western Canada: A review of agronomic potential and environmental benefits

Sheppard¹,

Cattani

Ominski

et al. 2019

Grass and Forage Science

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Sainfoin (Onobrychis viciifolia) is a forage legume of renewed interest in western Canada, with equally weighted advantages and disadvantages. In agronomic attributes, sainfoin is, at best, equal in yield, crude protein content and persistence to alfalfa (Medicago sativa). Sainfoin is equally or more palatable than alfalfa to ruminants, with comparable levels of animal productivity per unit forage consumed. The advantages it has compared to alfalfa include the following: (a) mitigation of frothy bloat; (b) reduced ammonia emissions (more faecal nitrogen (N) and less urinary N); (c) equal or better N retention by ruminants; and (d) anthelmintic protection from intestinal parasites. These advantages may be attributed to the presence of condensed tannins (CT), in legumes such as sainfoin. Emphasis on agronomic characteristics in breeding programmes appears to have led to the inadvertent reduction in the efficacy of CT characteristics. Persistence of sainfoin appears to be dependent on minimal pressure from competing plants, harvest or grazing, and good growth conditions from mid‐summer into fall, allowing for adequate root reserves for survival. It is possible that judicious use of glyphosate in late season might lessen competition in that critical period as sainfoin is more glyphosate‐tolerant than alfalfa. Otherwise, sainfoin may be best considered a short‐lived forage and best adapted for early season harvest or grazing to eliminate the risk of bloat.

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“…Benefit/ cost ratio <1 indicates a net loss, whereas values >1 indicates a net profit, relative to the control (Sintim et al, 2016). The amount of N released from biochar during the study was not measured, and thus it was not accounted for in calculating the NUE.…”

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“…Conventional tillage under no biochar and the 0-kg N ha −1 rate was used as the reference control in calculating the benefit/cost ratio. Benefit/ cost ratio <1 indicates a net loss, whereas values >1 indicates a net profit, relative to the control (Sintim et al, 2016). The price of wheat grain was set at $0.287 kg −1 according to a FAOSTAT estimate of the averaged producer price for wheat grain in Pakistan (FAOSTAT, 2018).…”

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Tillage and Biochar Effects on Wheat Productivity under Arid Conditions

et al. 2019

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Urea is an important source of inorganic N under wheat (Triticum aestivum L.) production system in Multan, Pakistan. However, the average N loss is high, ranging from 22 to 53% of applied N, which poses adverse environmental impacts. Reduced tillage and combined application of biochar and optimal N fertilizer could improve wheat productivity and reduce N losses. We evaluated the effects of two tillage (conventional and reduced tillage), two biochar (no biochar and poultry waste biochar), and three inorganic N rate (0, 60, and 120 kg ha−1) treatments on productivity and economic profitability of wheat production for two continuous growing seasons (2014–2015 and 2015–2016). Generally, reduced tillage increased wheat grain yield, protein content, and total N uptake by 0.2 Mg ha−1, 3.0 kg kg−1, and 37.0 kg ha−1, respectively, when compared with conventional tillage. Biochar application increased wheat grain yield, protein content, and total N uptake by 0.3 Mg ha−1, 6.8 kg kg−1, and 38.6 kg ha−1, respectively, compared with no‐biochar plots. Reduced tillage was economically profitable within the two cropping seasons, but biochar application was not, because of the high price of biochar (US$1.00 kg−1 biochar) and application rate (10 Mg biochar ha−1). Overall, wheat production under reduced tillage, no biochar, and the 60‐kg N ha−1 rate resulted in the greatest economic profit in this study.

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Nitrogen Application in Sainfoin under Rain‐Fed Conditions in Wyoming: Productivity and Cost Implications

Cited by 10 publications

References 32 publications

Grass‐Legume Seed Mass Ratios and Nitrogen Rates Affect Forage Accumulation, Nutritive Value, and Profitability

Grass‐Legume Seed Mass Ratios and Nitrogen Rates Affect Forage Accumulation, Nutritive Value, and Profitability

Sainfoin production in western Canada: A review of agronomic potential and environmental benefits

Tillage and Biochar Effects on Wheat Productivity under Arid Conditions

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