Warm-climate, legume-grass forage mixtures versus grass-only swards: An ecosystem services comparison
Revista Brasileira de Zootecnia, ISSN: 1806-9290, Vol: 51
2022
- 13Citations
- 21Captures
- 1Mentions
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Study Results from University of Florida Update Understanding of Animal Science (Warm-climate, Legume-grass Forage Mixtures Versus Grass-only Swards: an Ecosystem Services Comparison)
2022 DEC 13 (NewsRx) -- By a News Reporter-Staff News Editor at Food Daily News -- Current study results on Agriculture - Animal Science have
Article Description
Integrating warm-climate forage legumes into grass monocultures has received significant research attention during the past 70 years, but widespread adoption by end users has been elusive. The objectives of this review are to provide historical context regarding legume use in warm-climate grasslands; synthesize the current literature addressing contributions to grassland ecosystem services of warm-climate, grass-only vs. legume-grass mixed swards; and consider how to achieve more widespread adoption of legume technology in warm climates. For this review, warm-climate grasslands are considered those in areas between latitudes 30° N and 30° S, where C4 perennial grasses dominate. The literature suggests measurable advantages in animal performance, soil carbon accumulation, and nutrient cycling of legume-grass mixtures are most likely when grass-only swards receive little or no N fertilizer. Advantages are less or may disappear when mixtures are compared with grasses receiving high N fertilizer rates. In contrast, amelioration of greenhouse gas emissions is often most pronounced for mixtures when compared with grass-only swards receiving high rates of N, because of the magnitude of N fertilizer effects on emissions. Going forward, there is need to focus on selecting for, and thoroughly documenting legume persistence, achieving low-risk and affordable legume establishment methods, assessing compatibility of legumes in mixture with grasses prior to legume cultivar release, emphasizing adoption of both legume species and optimal management practices, and recognizing scientists must assume a larger and more intentional role in encouraging adoption by end-users of research innovations, in addition to our traditional role in technology and product developmentIntegrating warm-climate forage legumes into grass monocultures has received significant research attention during the past 70 years, but widespread adoption by end users has been elusive. The objectives of this review are to provide historical context regarding legume use in warm-climate grasslands; synthesize the current literature addressing contributions to grassland ecosystem services of warm-climate, grass-only vs. legume-grass mixed swards; and consider how to achieve more widespread adoption of legume technology in warm climates. For this review, warm-climate grasslands are considered those in areas between latitudes 30° N and 30° S, where C4 perennial grasses dominate. The literature suggests measurable advantages in animal performance, soil carbon accumulation, and nutrient cycling of legume-grass mixtures are most likely when grass-only swards receive little or no N fertilizer. Advantages are less or may disappear when mixtures are compared with grasses receiving high N fertilizer rates. In contrast, amelioration of greenhouse gas emissions is often most pronounced for mixtures when compared with grass-only swards receiving high rates of N, because of the magnitude of N fertilizer effects on emissions. Going forward, there is need to focus on selecting for, and thoroughly documenting legume persistence, achieving low-risk and affordable legume establishment methods, assessing compatibility of legumes in mixture with grasses prior to legume cultivar release, emphasizing adoption of both legume species and optimal management practices, and recognizing scientists must assume a larger and more intentional role in encouraging adoption by end-users of research innovations, in addition to our traditional role in technology and product development
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85142258808&origin=inward; http://dx.doi.org/10.37496/rbz5120210198; https://www.rbz.org.br/article/warm-climate-legume-grass-forage-mixtures-versus-grass-only-swards-an-ecosystem-services-comparison/; http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982022000100503&lng=en&tlng=en; http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1516-35982022000100503&lng=en&tlng=en; http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982022000100503; http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1516-35982022000100503; https://dx.doi.org/10.37496/rbz5120210198; https://rbz.org.br/article/warm-climate-legume-grass-forage-mixtures-versus-grass-only-swards-an-ecosystem-services-comparison/
Revista Brasileira de Zootecnia
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