Data/hora: 23/06/2024 13:18:39

Biblioteca(s): | Embrapa Soja.
Data corrente: | 18/11/1992
Data da última atualização: | 27/10/2004
Autoria: | SINCLAIR, T. R.
Afiliação: | USDA-ARS - Agronomy Physiology Laboratory - University of Florida - Gainesville, Florida 32611 (USA).
Título: | Simultaneous limitation to soybean yield increase by carbon and nitrogen.
Ano de publicação: | 1989
Fonte/Imprenta: | In: CONFERENCIA MUNDIAL DE INVESTIGACION EN SOJA, 4., 1989, Buenos Aires. Actas... Buenos Aires: AASOJA, 1989.
Volume: | t.1
Páginas: | p.183-188.
Idioma: | Inglês
Conteúdo: | Recent developments in understanding the physiological interactions within plants and in systems analysis techniques have indicated that under many circumstances multiple factors may simultaneously limit crop yield. In soybean, carbon and nitrogen are two very important resources influencing yield. Direct experimental evidence has shown that yield can be increased by increasing either carbon or nitrogen input into soybean plants. Furthermore, increased accumulation of either carbon or nitrogen results in an increased accumulation of the other. These observations provide evidence that availability of carbon and nitrogen in the plant is regulated so that these resources simultaneously limit yield. Model analyses of soybean crops support the conclusion that car- bon and nitrogen availability in the plant simultaneously limit biomass accumulation. To achieve yield improvements as a result of altered soybean physiology, future efforts will aparently require a coordinated improvement in the physiology of bot carbon and nitrogen accumulation.
Palavras-Chave: | Soybean; Yield.
Thesagro: | Carbono; Fisiologia; Nitrogênio; Rendimento; Soja.
Thesaurus Nal: | carbon; nitrogen; physiology.
Categoria do assunto: | --
Registro original: | Embrapa Soja (CNPSO)