Assured rainfall analysis for enhanced crop production under rainfed condition in Bihar

Abstract

334 Assured rainfall analysis in Bihar December 2018 and ending week from 39 to 40 SMW across the districts under Zone I (Table 1). Hence, on the basis of informationon sowing rain, the earliest sowing of rainfed crops could be possible in West Champaran district at 22 SMW and the latest at 25 SMW in Vaishali, Siwan, Saran, Gopalganj and Muzaffarpur districts in Zone I. In Zone II, the sowing week was observed to vary from 19 SMW in Kishanganj district to 24 SMW in Khagaria district, while the ending week of having 20 mm rainfall extended from 39 to 40 SMW across various district. As compared to the sowing weeks in the districts under Zone II, the sowing as well as ending weeks across the districts of Zone IIIA did not show much variation, with sowing week recording between 24 to 25 SMW and the ending week during 39-40 SMW. Similar variation in sowing and as well as ending weeks was also observed in the districts under Zone IIIB. In this zone, the sowing week ranged from 25 to 26 SMW and the ending week terminated comparatively little earlier during 38-39 SMW, with six out of eleven districts showing cessation of having 20 mm threshold rainfall at 38 SMW. Thus, considering all the districts of the state, the earliest sowing of rainfed upland crops could be possible in Kishanganj district at 19 SMW, as against the maximum delayed sowing occurring at 26 SMW in Arwal.