Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/927378
Título: Transpiration response of upland rice to water deficit changed by different levels of eucalyptus biochar.
Autoria: PEREIRA, R. G.
HEINEMANN, A. B.
MADARI, B. E.
CARVALHO, M. T. de M.
KLIEMANN, H. J.
SANTOS, A. P. dos
Afiliação: ROGÉRIO GOMES PEREIRA, UNIVERSIDADE FEDERAL DE GOIÁS
ALEXANDRE BRYAN HEINEMANN, CNPAF
BEATA EMOKE MADARI, CNPAF
MARCIA THAIS DE MELO CARVALHO, CNPAF
HUBERTO JOSE KLIEMANN, UNIVERSIDADE FEDERAL DE GOIÁS
AURÉLIO PEREIRA DOS SANTOS, CNPAF.
Ano de publicação: 2012
Referência: Pesquisa Agropecuária Brasileira, v. 47, n. 5, p. 716-721, maio 2012.
Conteúdo: The objective of this work was to evaluate the effect of eucalyptus biochar on the transpiration rate of upland rice 'BRSMG Curinga' as an alternative means to decrease the effect of water stress on plant growth and development. Two-pot experiments were carried out using a completely randomized block design, in a split-plot arrangement, with six replicates. Main plots were water stress (WS) and no-water stress (NWS), and the subplots were biochar doses at 0, 6, 12 and 24% in growing medium (sand). Total transpirable soil water (TTSW), the p factor - defined as the average fraction of TTSW which can be depleted from the root zone before water stress limits growth-, and the normalized transpiration rate (NTR) were determined. Biochar addition increased TTSW and the p factor, and reduced NTR. Consequently, biochar addition was able to change the moisture threshold (p factor) of the growing medium, up to 12% maximum concentration, delaying the point where transpiration declines and affects yield.
Thesagro: Arroz
Oryza sativa
Eucalipto
Deficiência hídrica
NAL Thesaurus: biochar
Palavras-chave: Estresse abiótico
Digital Object Identifier: https://doi.org/10.1590/S0100-204X2012000500012
Tipo do material: Artigo de periódico
Acesso: openAccess
Aparece nas coleções:Artigo em periódico indexado (CNPAF)

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