Herbage responses of signalgrass under full sun or shade in a silvopasture system using tree legumes

Lima, Hugo N.B.; Dubeux, José C. B.; Santos, Mércia Virgínia Ferreira dos; Mello, Alexandre Carneiro Leão de; Lira, M. A.; Cunha, Márcio Vieira da; Freitas, Erinaldo Viana de; Apolinário, Valéria Xavier de Oliveira

doi:10.1002/agj2.20137

Cited by 8 publications

(5 citation statements)

References 29 publications

(29 reference statements)

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“…Lima et al. (2020) assessed signalgrass growth in SPSs of gliricidia and mimosa under full sun or shade. Signalgrass herbage accumulation rate was 56 and 27 kg DM ha −1 d −1 under full sun and under shade, respectively, and did not vary with tree species.…”

Section: Discussionmentioning

confidence: 99%

Tree legume enhances livestock performance in a silvopasture system

et al. 2021

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Silvopastoral systems (SPSs) can increase overall productivity and long‐term income due to the simultaneous production of trees, forage, and livestock. This 2‐yr study evaluated animal performance and herbage responses in C4–grass monoculture or in SPS in the subhumid tropical region of Brazil. The experimental design was a randomized complete block with three replications. Treatments were: Urochloa decumbens (Stapf.) R. Webster (Signalgrass) + Mimosa caesalpiniifolia Benth (SPS–mimosa), Signalgrass + Gliricidia sepium (Jacq.) Kunth ex Walp (SPS–gliricidia), and signalgrass monoculture (SM). Response variables included herbage and livestock responses. Cattle were managed under continuous stocking with variable stocking rate. There was a treatment × month interaction for herbage mass. Green herbage accumulation rate ranged from 20 to 80 kg dry matter ha−1 d−1 across months, with SPS–mimosa presenting lower rates. Average daily gain was greater in SPS–gliricidia, followed by SM and SPS–mimosa (0.77, 0.56, and 0.23 kg d−1, respectively), varying across months. Stocking rate ranged from 0.86 to 1.6 AU ha−1. Total gain per area during the experimental period was greater for SPS–gliricidia (423 kg body weight [BW] ha−1), followed by signalgrass in monoculture (347 kg BW ha−1) and SPS–mimosa (50 kg BW ha−1). Silvopasture systems using signalgrass and gliricidia enhanced livestock gains compared with signalgrass in monoculture, and mimosa trees outcompeted signalgrass, reducing livestock gains. Silvopasture systems with tree legumes have the potential to provide numerous ecosystem services and to reduce the C footprint of livestock systems in the tropics; however, the choice of tree species is key and is determined by which ecosystem service is prioritized.

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Section: Discussionmentioning

confidence: 99%

Tree legume enhances livestock performance in a silvopasture system

et al. 2021

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“…One challenge for sustaining forage accumulation of legume tree-grass mixtures is the potential for shading of the grass understory that decreases grass forage accumulation. In Pernambuco state, Brazil, signalgrass was subjected to shading from the tree legumes gliricidia and mimosa planted in rows 10-m apart (Lima et al, 2020). Greater forage accumulation occurred for signalgrass in full sun than under shade (54 vs. 27 kg ha -1 d -1 ), indicating that the trees would need to provide significant additional forage accumulation to compensate for the losses in grass forage accumulation associated with shade.…”

Section: Forage Productionmentioning

confidence: 99%

Warm-climate, legume-grass forage mixtures versus grass-only swards: An ecosystem services comparison

Sollenberger¹,

Júnior²

2022

Revista Brasileira De Zootecnia

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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 development.

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“…The wide adaptation potential of these legumes, ranging from semiarid to humid areas, increases the scope for their utilization (Dubeux, Muir, et al, 2017). Most studies in Brazil with tree legumes have been conducted in an ecoregion considered a transition zone between the Atlantic rainforest and the semiarid Agreste region (average annual rainfall is approximately 1,200 mm, with an average annual temperature around of 25°C; Apolinário et al., 2015; Apolinário et al., 2016; Lima et al., 2020; Dos Santos, Dubeux et al, 2020).…”

Section: Forage Legume Management In Tropical Pasturesmentioning

confidence: 99%

“…In relation to forage and animal performance, the reduction of light intensity for the herbaceous component in silvopastoral systems can affect morphological and physiological aspects that are determinants for the productivity and quality of forage (Lima et al., 2020). Therefore, tree legumes may reduce grass herbage accumulation, which may result in reduced animal performance per unit area (Lima et al., 2020; Dos Santos, Dubeux et al, 2020). However, the multifunctionality of tree legumes allows the provision of other incomes, such as timber, lumber and firewood (Dos Santos, Dubeux et al, 2020).…”

Section: Forage Legume Management In Tropical Pasturesmentioning

confidence: 99%

Forage legumes in grass pastures in tropical Brazil and likely impacts on greenhouse gas emissions: A review

Boddey

Casagrande

Homem

et al. 2020

Grass and Forage Science

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Tropical forage legumes were first used on a wide scale, starting well before the 1950s in the northeasterly Australian state of Queensland (Shaw, 1961). The famous "Townsville Stylo" (Stylosanthes humilis Kunth) was introduced into thousands of ha of pastures in Queensland and made an important contribution to extensive beef production in northern Australia (Gardener, McCaskill, & McIvor, 1993; Humphreys, 1967). Many Brazilian students working on pastures and agronomy studied in Australia in the 1960s and 1970s and brought back the idea of using Stylosanthes spp. in Brazilian pastures. The Centro Internacional de Agricultura Tropical (CIAT), Cali, Colombia, starting in the 1970s, accumulated a large collection of forage legumes, listed today as 21,083 tropical legume accessions, including over 4,000 of the genus Stylosanthes alone (CIAT, 2019). A considerable effort was made to work with this germplasm in Brazil, mainly by Embrapa and CEPLAC. The first Stylosanthes materials tested were highly sensitive to the fungal disease anthracnose and resistant accessions had to be selected. In Brazil, two cultivars of Stylosanthes were released in 1983, Pioneiro and Bandeirantes, and while in trials their performance was satisfactory (Sousa, Andrade, & Thomas, 1983a, 1983b) there was

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Herbage responses of signalgrass under full sun or shade in a silvopasture system using tree legumes

Cited by 8 publications

References 29 publications

Tree legume enhances livestock performance in a silvopasture system

Tree legume enhances livestock performance in a silvopasture system

Warm-climate, legume-grass forage mixtures versus grass-only swards: An ecosystem services comparison

Forage legumes in grass pastures in tropical Brazil and likely impacts on greenhouse gas emissions: A review

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