Data/hora: 05/06/2024 11:03:10

Biblioteca(s): | Embrapa Soja.
Data corrente: | 04/12/1992
Data da última atualização: | 27/10/2004
Autoria: | LAWN, R. J.; BYTH, D. E.
Afiliação: | CSIRO Division of Tropical Crops & Pastures, Cunningham Laboratory, Queensland 4067, Australia.
Título: | Saturated soil culture - a technology to expand the adaptation of soybean.
Ano de publicação: | 1989
Fonte/Imprenta: | In: CONFERENCIA MUNDIAL DE INVESTIGACION EN SOJA, 4., 1989, Buenos Aires. Actas... Buenos Aires: AASOJA, 1989.
Volume: | t.2
Páginas: | p.576-585.
Idioma: | Inglês
Conteúdo: | The ability of soybean to acclimate readily and in many cases yield more when cultured in saturated soil presents and opportunity to expand the range of agricultural situations in which the crop is grown. At one extreme, the potential exists for exploiting this adaptive response for high-yield production where there are facilities for controlled irrigation and adequate water. Studies in Australia have shown that experimental yields in the range 5.0-8.5 t ha-1, representing average increases of the order of 10-25% compared with well-watered, conventionally-irrigated controls, are not unusual with saturadet soil culture. At the other, the opportunity is presented for culture of the crop in situations hitherto considered unsuitable, such as in areas of the tropics with seasonally-waterlogged soils. For example, in rice-based cropping systems in Asia, soybean can be considered as a wet-season crop, rather than mainly as a post-rice crop utilising residual soil water. Theresponse also provides an alternative strategy for irrigation management on impermeable soils where conventional irrigation practices are inadequate. The ability of soybeans to acclimate to and grown on saturated soil appears to be ubiquitous among genotypes. However, certain physiological traits predispose to a positive yield response, so that the opportunity exists for selection to enhance yields. Likewise, management practices can enhance or reduce yields, indicating the need to develop alternative strategies for agronomic management more appropriate
Palavras-Chave: | Saturation; Satured soil; Solo saturado; Soybean.
Thesagro: | Saturação; Soja.
Thesaurus Nal: | Australia.
Categoria do assunto: | --
Registro original: | Embrapa Soja (CNPSO)