Influência da luminosidade no comportamento de onze espécies forrageiras perenes de verão

Soares, André Brugnara; Sartor, Laércio Ricardo; Adami, Paulo Fernando; Varella, A. C.; Fonseca, Lidiane; Mezzalira, J. C.

doi:10.1590/s1516-35982009000300007

Cited by 89 publications

(97 citation statements)

References 12 publications

(16 reference statements)

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“…Water soil dynamics in integrated systems depends on the region's rainfall and configuration (arrangement) of its components, which may present higher levels of soil moisture characteristics (Paciullo et al, 2008;Soares et al, 2009) or faster soil desiccation near the trees (Wilson, 1998), as obtained in this work.…”

Section: Resultsmentioning

confidence: 71%

Microclimate and soil moisture in a silvopastoral system in southeastern Brazil

et al. 2015

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In this study, the microclimate changes in silvopastoral systems are quantified at different time and spatial scales and compared with single-pasture systems. The study was conducted in a silvopastoral system in São Carlos, Brazil (22°01' South and 47°53' West). The silvopastoral system consisted of grass pastures [Urochloa (sin. Brachiaria) decumbens cv. Basilik] lined with strips of native trees spaced at 17 m. Continuous microclimate measurements (air temperature, relative humidity, wind speed, and incident photosynthetically active radiation) were carried out from September 2010 to September 2012 at two positions of the silvopastoral system (2.0 and 8.5 m from the rows of trees) and at a pasture under full sunlight, located in an adjacent area. The soil moisture was monitored weekly from 24 March 2010 to 1 April 2012 at distances of 0.0, 2.0, 4.75, and 8.5 m from the rows of trees. The rows of native trees reduced wind speeds (46% reduction) and changed the photosynthetically active radiation incidence pattern on the pasture (up to 40% reduction of incidence at the point nearest to the trees). The combined action of these factors promoted thermal and air humidity changes on the pasture at the different points measured. With respect to soil moisture, there was greater soil moisture removal at the sampling points near the rows of native trees under the silvopastoral system, mainly due to enhanced exploration by tree roots at greater depths in dry spells or early dry periods, when compared with the midpoints between the rows.

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Section: Resultsmentioning

confidence: 71%

Microclimate and soil moisture in a silvopastoral system in southeastern Brazil

et al. 2015

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“…'Planaltina'. SOARES et al (2009) consideram esse resultado como aumento na concentração de nitrogênio, pois a planta reduz sua matéria seca para acumular componentes, como água, minerais e produzir clorofila a. As maiores concentrações de clorofila a podem explicar a coloração verde mais intensa, observada em plantas de A. gayanus sombreadas, quando comparadas aos indivíduos mantidos a pleno sol.…”

Section: Resultsunclassified

Comportamento de Andropogon gayanus cv. ‘planaltina’ e Panicum maximum cv. ‘tanzânia’ sob sombreamento

Oliveira

Mota

Ramos³

et al. 2013

Cienc. Rural

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“…Established trees (eucalypt) alter the microclimate near the grass and affect that development. Soares et al (2009) reported a decline in dry matter yield of some grasses when planted between the rows of pine (Pinus taeda).…”

Section: Soil Organic Carbon Concentration and Poolmentioning

confidence: 99%

“…The amount of sunlight reaching the soil surface in an agroforestry system depends on the growth and management of trees (Soares et al, 2009). Paciullo et al (2010) observed a reduction of 22.3 and 41.4 % in green forage and root mass, respectively, in the vicinity of the tree row compared to crop growth without trees.…”

Section: Introductionmentioning

confidence: 99%

Physical quality of an Oxisol under an integrated crop-livestock-forest system in the Brazilian Cerrado

Neto

Andrioli

Almeida

et al. 2014

Rev. Bras. Ciênc. Solo

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SUMMARYSoil physical quality is an important factor for the sustainability of agricultural systems. Thus, the aim of this study was to evaluate soil physical properties and soil organic carbon in a Typic Acrudox under an integrated crop-livestock-forest system. The experiment was carried out in Mato Grosso do Sul, Brazil. Treatments consisted of seven systems: integrated crop-livestock-forest, with 357 trees ha -1 and pasture height of 30 cm ); integrated crop-livestock-forest with 357 trees ha -1 and pasture height of 45 cm ); integrated crop-livestockforest with 227 trees ha -1 and pasture height of 30 cm ); integrated croplivestock-forest with 227 trees ha -1 and pasture height of 45 cm ); integrated crop-livestock with pasture height of 30 cm (CL 30 ); integrated croplivestock with pasture height of 45 cm (CL 45 ) and native vegetation (NV). Soil properties were evaluated for the depths of 0-10 and 10-20 cm. All grazing treatments increased bulk density (ρ ρ ρ ρ ρ b ) and penetration resistance (PR), and decreased total porosity (ƒ t ) and macroporosity (ƒ ma ), compared to NV. The values of ρ ρ ρ ρ ρ b (1.18-1.47 Mg m -3 ), ƒ ma (0.14-0.17 m 3 m -3 ) and PR (0.62-0.81 MPa) at the 0-10 cm depth were not restrictive to plant growth. The change in land use from NV to CL or CLF decreased soil organic carbon (SOC) and the soil organic carbon pool (SOC pool ). All grazing treatments had a similar SOC pool at the 0-10 cm depth and were lower than that for NV (17.58 Mg ha -1 ).Index terms: agroforestry, soil organic carbon, multivariate analysis. A qualidade física do solo é um importante fator para a sustentabilidade dos sistemas agrícolas. O objetivo desta pesquisa foi avaliar as propriedades físicas do solo e o carbono orgânico em um Latossolo Vermelho distrófico, sob sistema de integração lavoura-pecuária-floresta. O experimento foi conduzido no Mato Grosso do Sul, Brasil. Os tratamentos consistiram de sete sistemas: integração lavoura-pecuária-floresta, com 357 árvores ha -1 e altura de pastejo de 30 cm ); integração lavoura-pecuária-floresta, com 357 árvores ha -1 e altura do pastejo de 45 cm (CLF 357-45 ); integração lavoura-pecuária-floresta, com 227 árvores ha -1 e altura do pastejo de 30 cm ); integração lavoura-pecuária-floresta, com 227 árvores ha -1 e altura do pastejo de 45 cm ); integração lavourapecuária, com a altura do pastejo de 30 cm (CL 30 ); integração lavoura-pecuária, com a altura do pastejo de 45 cm (CL 45 ); e vegetação nativa (NV). As propriedades do solo foram avaliadas nas profundidades de 0-10 e 10-20 cm. Todos os tratamentos com pastagem aumentaram a densidade do solo (ρ b ) e resistência à penetração (RP) e diminuíram a porosidade total (ƒ t ) e macroporosidade (ƒ ma ), em comparação com a NV. Os valores de ρ b (1,18-1,47 Mg m -3 ), ƒ ma (0,14-0,17 m 3 m -3 ) e PR (0,62-0,81 MPa) na profundidade de 0-10 cm não foram restritivos ao crescimento de plantas. A mudança de uso do solo a partir NV para CL ou CLF diminuiu o carbono orgânico (SOC) e o estoque de carbono orgânico (SOC...

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Influência da luminosidade no comportamento de onze espécies forrageiras perenes de verão

Cited by 89 publications

References 12 publications

Microclimate and soil moisture in a silvopastoral system in southeastern Brazil

Microclimate and soil moisture in a silvopastoral system in southeastern Brazil

Comportamento de Andropogon gayanus cv. ‘planaltina’ e Panicum maximum cv. ‘tanzânia’ sob sombreamento

Physical quality of an Oxisol under an integrated crop-livestock-forest system in the Brazilian Cerrado

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