Agroclimatic analysis of stable rainfall periods in undivided Bastar district of Chhattisgarh region of Madhya Pradesh, India.

摘要

Rainfall patterns were determined by analysis of 40 years rainfall data (1947-86) over 12 stations of Bastar district in Chhattisgarh region of Madhya Pradesh, India, and relationships between rain and rice yield were investigated. Weekly mean rainfall of 50 mm for lowlands and 75 mm for uplands with a coefficient of variation of <100% was considered as the stable rainfall period for rice cultivation. The results are discussed in relation to rice productivity, crop planning and cultivar selection.