Some studies on rainfall climatology Of the Nagpur region

Abstract

Characterisation of rainfall of the Nagpur region for crop production and cropping patterns is studied. Percentile , Index based on five parameters to show adequacy of rainfall for crop production is developed and round to describe monsoon performance satisfactorily, These studies have revealed that the mean rainfall of kharif season is 861.5 mm(CV20.8 %) with S2.3(CV) 7 .3 %) rainy days, Cropping season of 13weeks (25-37MW) with dependable rainfall at 75, 80, 85, 90% probability levels was round to be most assured and risk-free The cropping period at 75% and 50% probability levels can be extended up to 18 weeks (23-40MW) with marginal

risk, In rabi and summer growing seasons, there was no rainfall at all at any feasible, dependable level and this situation asked for Irrigation, Strategy for stabilizing rainfed crop yields Included the adaptation of short to medium duration crops (16-18 weeks) with water requirements 50~-900 mm, viz., groundnut, soybean, sunflower, maize, sorghum. Long duration crops like cotton and rice with high water requirements can be adapted with certain risk.