Runoff inducement research for agriculture in very arid zones of Northeast Brazil.

AUTOR(ES)

SHARMA, P.N.

FONTE

CONGRESSO BRASILEIRO DE ENGENHARIA AGRICOLA

DATA DE PUBLICAÇÃO

2011

RESUMO

The concept of runoff inducement for agricultural purposes in discussed in detail. Its implications to the North-East Braziliam conditions and necessity for additional research is explained. An exautive review of the research at various places in the world is included. The latest work being carried out at the Centro of Agricultural Research for Semi-Arid Tropics (CPATSA) is explained in detail. This work included development of eight small watersheds varying in size from 1.0 ha to 2.7 ha for hydrologic evaluation of various simple low cost runoff inducement methods under natural caatinga conditions on shallow to medium deep Latossols. The various methods of runoff inducement include combinations of intensified grassed waterways, strip clearing of caatinga, narrow based channel terraces (or graded bunds) for soil conservation, salt treatment on cleared strips and complete clearing of caatinga with grass cover.

ASSUNTO(S)

agricultura solo agua manejo brasil nordeste regiao arida semi-arida agriculture soil water management brazil northeast semi-arid arid region

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