Calculation of georeferenced water demand for a bean crop: A computational system

Revista Brasileira de Engenharia Agrícola e Ambiental

Sediyama, Gilberto C.¹  Soares, Antonio A.¹  Costa, José M. N. da¹  Dantas Neto, Francisco S.²  Costa, Luiz C.¹ 

[1]UFV, Visoça

[2]ESAM, Mossoró

关键词: DEMANDAsis;    soil water balance;    bean planting date    INTRODUÇÃO O conhecimento sobre o processo de retenção de água no solo e demanda hídrica das culturas é fundamental para o dimensionamento e manejo de sistemas de irrigação;   

DOI  :  10.1590/S1415-43662005000200011

学科分类：农业科学（综合）

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

【 摘 要 】

A computational program was implemented to determine the irrigation requirements and the best planting dates of bean crop at the Rios do Leste Watershed. The program, called DEMANDAsis, is based on a soil water balance, consisting of computational programs and databases. The results about the best planting dates of bean crop at Rios do Leste Watershed showed that the period between 5th and 19th October assures greater availability of rainfall during the growing cycle of the crop in about 53% of the area of the basin. The use of supplemental irrigation of 4 to 5 mm d-1 was considered to be adequate in about 40% of the area of the watershed.

【 授权许可】

CC BY-NC