Data/hora: 21/06/2024 05:03:55

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 06/10/2016
Data da última atualização: | 17/05/2017
Autoria: | MARTINS, A. P.; COSTA, S. E. V. G. de A.; ANGHINONI, I.; KUNRATH, T. R.; CECAGNO, D.; REICHERT, J. M.; BALERINI, F.; DILLENBURG, L. R.; CARVALHO, C. de F.
Afiliação: | AMANDA POSSELT MARTINS, UFRGS; SÉRGIO ELY VALADÃO GIGANTE DE ANDRADE COSTA, UFRGS; IBANOR ANGHINONI, UFRGS; TAISE ROBINSON KUNRATH, UFRGS; DIEGO CECAGNO, UFRGS; JOSÉ MIGUEL REICHERT, UFSM; FABRÍCIO BALERINI, UFRGS; LÚCIA REBELLO DILLENBURG, UFRGS; CÉSAR DE FACCIO CARVALHO, UFRGS.
Título: | Soil moisture and soybean physiology affected by drought in an integrated crop-livestock system.
Ano de publicação: | 2016
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 51, n. 8, p. 978-989, ago. 2016.
Idioma: | Inglês
Notas: | Título em português: Umidade do solo e fisiologia da soja afetados por estiagem em sistema de integração lavoura?pecuária.
Conteúdo: | The objective of this work was to evaluate the impact of grazing intensities after 11 years of an integrated crop?livestock system, under no?tillage, on soil moisture and soybean physiological parameters during a summer season affected by drought. The experiment was established in 2001 on a Rhodic Hapludox. Treatments consisted in the succession of soybean (summer) and a mixed pasture of black oat + Italian ryegrass (winter), under different beef?cattle grazing intensities: intensive grazing, with 0.10?m pasture height; moderate grazing, with 0.20?m pasture height; and no grazing. During the soybean cycle, in the 2011/2012 crop season, rainfall was 40% of the climatological normal. The soil moisture was within the limits of available water both under moderate grazing and no grazing, at 0.00?0.50?m soil depth, but, under intensive grazing, it was below the permanent wilting point, especially up to the grazing height of 0.20 m. Intensive grazing affected negatively the plant physiology parameters, reaching peaks of ?2.5 MPa and +6°C for leaf water potential and leaf?air temperature difference, respectively. Moderate grazing or the absence of grazing, during the winter season, results in similar physiological responses, contributing to soybean plant homeostasis.
Palavras-Chave: | Leaf temperature; Potencial de água na folha; Temperatura da folha; Water availability.
Thesagro: | Disponibilidade de água; Glycine Max.
Thesaurus Nal: | Leaf water potential; Plant available water.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/148474/1/Soil-moisture-and-soybean.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (60049-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS