Data/hora: 03/06/2024 06:35:43

Biblioteca(s): | Embrapa Meio-Norte.
Data corrente: | 21/09/1998
Data da última atualização: | 21/09/1998
Autoria: | NIELSEN, D. C.
Título: | Scheduling irrigations for soybeans with the Crop Water Stress index (CWSI).
Ano de publicação: | 1990
Fonte/Imprenta: | Field Crops Research, v. 23, p. 103-116, 1990.
Idioma: | Inglês
Conteúdo: | A Crop Water Stress Index (CWSI) has been related to water use and plant water-stress parameters, but irrigation scheduling based on CWSI values has only been reported for corn and wheat. The objectives of this study were to evaluate irrigation scheduling of soybean (Glycine max L. Merrill) with CWSI as computed from measurements of infrared canopy temperature, air temperature, and vapor-pressure deficit, and to determine if amount of water applied per irrigation influenced water use and yield obtained from irrigation scheduling by CWSI. Soybeans were grown in field plots with drip irrigation (25 mm water per irrigation) and under a rainout shelter with flood irrigation (25 or 51 mm water per irrigation. Irrigations were initiated when CWSI reached thresh-old values of 0.1, 0.2, 0.4, or 0.6. Analysis of the data showed the CWSI baseline equation to be incorrect.
Palavras-Chave: | CWSI; IE/HP; Termanetria infravermelho.
Thesagro: | Irrigação; Soja.
Thesaurus Nal: | irrigation.
Categoria do assunto: | --
Registro original: | Embrapa Meio-Norte (CPAMN)
Exemplares: | CPAMN - (4348-1) - ADC - SP - -- - S 11077 -  - S 11077 - DIS