Determination of the optimal irrigation depth for sweet corn in Sete Lagoas, MG

Revista Brasileira de Engenharia Agrícola e Ambiental

Frizzone, José A.³  Heinemann, Alexandre B.¹  Sousa, Sérgio A.V. de² 

[1] COPERSUCAR, Piracicaba;USP, Piracicaba;USP

关键词: analysis;    simulation;    sweet corn;    Zea mays    INTRODUÇÃO Na cultura do milho;    a disponibilidade de água passa a ser fator decisivo no potencial de produção e rendimento;    no período compreendido entre os 3º e 5º estádios;    ou seja;    com 85 a 90% da área foliar e florescimento até o estádio de enchimento dos grãos (Fancelli & Dourado Neto;    1996);   

DOI  :  10.1590/S1415-43662001000100028

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

The objective of this study was to determine the optimal irrigation application that gives the maximum revenue of sweet corn during the rainy season, in Sete Lagoas, State of Minas Gerais, Brazil. Decision criterion was used to determine the optimal irrigation application. Four irrigation depths were used (385, 289, 193 and 96 mm). The irrigation water amount of 385 mm was calculated from a production function and this water amount gave the maximum yield. The results showed that the 385 mm gave the best revenue, considering the water price up to R$ 0.36 per 10 m3. With a higher water price, the best revenue was obtained when the irrigation water depth was 289 mm.

【 授权许可】

CC BY-NC