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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
12/09/2018 |
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Data da última atualização: |
14/01/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
ARAUJO, L. C. de; SANTOS, P. M.; RODRIGUEZ, D.; PEZZOPANE, J. R. M. |
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Afiliação: |
Leandro Coelho de Araujo, UNESP; PATRICIA MENEZES SANTOS, CPPSE; Daniel Rodriguez, University of Queensland; JOSE RICARDO MACEDO PEZZOPANE, CPPSE. |
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Título: |
Key factors that influence for seasonal production of Guinea grass. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Scientia Agricola, v. 75, n. 3, p. 191-196, 2018. |
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DOI: |
http://dx.doi.org/10.1590/1678-992X-2016-0413 |
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Idioma: |
Inglês |
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Conteúdo: |
Climate, soil and management are the main drives for growth and production of tropical pastures. Thus, a better understanding of the effects of these factors and their interactions under climate conditions is required to obtain effective management options. Here, we used data from two field trials to research on climate and management interactions on the production seasonality of Panicum maximum Jacq. Treatments included four sampling times (250, 500, 750, and 1000 °C accumulated) during eight regrowth period, under irrigated and rainfed conditions and, cuts were made to simulate grazing intensity. All treatments were arranged in a completely randomized block design with four replications. At each sampling time, basal tillers were sampled to observe meristematic differentiation and were linked with the respective daylength. Soil moisture was determined, and the water availability index (WAI) was calculated. The dry matter production (DMP) was taken and relative productivity was calculated. Soil moisture was the key seasonal drive in spring-summer and the WAI could be used to adjust the maximum production for that season. The major drive for DMP in fall was the daylength, which was found at 11.81 h. For all seasons, DMP correlated better with the residues in early regrowth phase (r = 0.82 and p < 0.0001) and with degree days at final regrowth phase (r = 0.73 p < 0.01). Applying these critical values to management guidelines should make Guinea grass DMP more efficient on tropical farms. MenosClimate, soil and management are the main drives for growth and production of tropical pastures. Thus, a better understanding of the effects of these factors and their interactions under climate conditions is required to obtain effective management options. Here, we used data from two field trials to research on climate and management interactions on the production seasonality of Panicum maximum Jacq. Treatments included four sampling times (250, 500, 750, and 1000 °C accumulated) during eight regrowth period, under irrigated and rainfed conditions and, cuts were made to simulate grazing intensity. All treatments were arranged in a completely randomized block design with four replications. At each sampling time, basal tillers were sampled to observe meristematic differentiation and were linked with the respective daylength. Soil moisture was determined, and the water availability index (WAI) was calculated. The dry matter production (DMP) was taken and relative productivity was calculated. Soil moisture was the key seasonal drive in spring-summer and the WAI could be used to adjust the maximum production for that season. The major drive for DMP in fall was the daylength, which was found at 11.81 h. For all seasons, DMP correlated better with the residues in early regrowth phase (r = 0.82 and p < 0.0001) and with degree days at final regrowth phase (r = 0.73 p < 0.01). Applying these critical values to management guidelines should make Guinea grass DMP more efficient on tropi... Mostrar Tudo |
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Palavras-Chave: |
Capim-guiné; Daylength; Degree-days; Mombaça; Tropical forage; Water deficit. |
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Thesagro: |
Panicum Maximum. |
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Thesaurus NAL: |
Soil water deficit. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/182773/1/KeyFactorsInfluence.pdf
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Marc: |
LEADER 02280naa a2200265 a 4500
001 2095488
005 2019-01-14
008 2018 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/1678-992X-2016-0413$2DOI
100 1 $aARAUJO, L. C. de
245 $aKey factors that influence for seasonal production of Guinea grass.$h[electronic resource]
260 $c2018
520 $aClimate, soil and management are the main drives for growth and production of tropical pastures. Thus, a better understanding of the effects of these factors and their interactions under climate conditions is required to obtain effective management options. Here, we used data from two field trials to research on climate and management interactions on the production seasonality of Panicum maximum Jacq. Treatments included four sampling times (250, 500, 750, and 1000 °C accumulated) during eight regrowth period, under irrigated and rainfed conditions and, cuts were made to simulate grazing intensity. All treatments were arranged in a completely randomized block design with four replications. At each sampling time, basal tillers were sampled to observe meristematic differentiation and were linked with the respective daylength. Soil moisture was determined, and the water availability index (WAI) was calculated. The dry matter production (DMP) was taken and relative productivity was calculated. Soil moisture was the key seasonal drive in spring-summer and the WAI could be used to adjust the maximum production for that season. The major drive for DMP in fall was the daylength, which was found at 11.81 h. For all seasons, DMP correlated better with the residues in early regrowth phase (r = 0.82 and p < 0.0001) and with degree days at final regrowth phase (r = 0.73 p < 0.01). Applying these critical values to management guidelines should make Guinea grass DMP more efficient on tropical farms.
650 $aSoil water deficit
650 $aPanicum Maximum
653 $aCapim-guiné
653 $aDaylength
653 $aDegree-days
653 $aMombaça
653 $aTropical forage
653 $aWater deficit
700 1 $aSANTOS, P. M.
700 1 $aRODRIGUEZ, D.
700 1 $aPEZZOPANE, J. R. M.
773 $tScientia Agricola$gv. 75, n. 3, p. 191-196, 2018.
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Embrapa Pecuária Sudeste (CPPSE) |
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