Vol. 8, Issue 2 (2020)
Impact of seasonal rainfall trend and its variability on crop production in rainshadow districts of Chhattisgarh: A case study in Kawardha district
Author(s): Jubuli Sahu, JL Chaudhary, Krishna Murari and HV Puranik
Abstract: In this research work we studied the impact of seasonal rainfall trend and its variability on production of major crops at Kawardha district of Chhattisgarh state. For this study, long term rainfall data (1962-2015) and crop data (2000-2014) were used. The mean annual rainfall of 983.8 mm was recorded in Kawardha with coefficient of variation of 17 %. The coefficient of variation was lowest during monsoon season like the CV during July and August is less than 40 % where as it is more than 50 % but less than 60 % in June and September months. In Kawardha district, mean annual rainfall of 983.8 mm was observed out of which south- west monsoon received 854.7 mm with coefficient of variation 18 percent. During south-west monsoon period mean of 46 days was observed with coefficient of variation of 19 percent. Rest of seasons received mean rainy days of less than 6 with coefficient of variation more than 70 percent. Rest of seasons received the mean rainfall of less than 70 mm with coefficient of variation of more than 90 percent. The CV of less than 100 percent was found during the season of north-east monsoon period. The seasonal rainfall pattern in this area is similar to annual rainfall as more than 90 per cent of annual rainfall is received during kharif season. There is a statistically non significant trend of seasonal rainfall has been found in this district but a significant rainfall trend was found in the month of August at 5 % level of significance. The area, production and productivity of all the selected crops are showing a significant increasing trend with some exception in Maize (decreasing trend of area), Soyabean(productivity trend is not significant) and arhar (non significant value).The main crop production of the district was concentrated on this seasonal rainfall pattern. So, water harvesting and storage is more convenient steps towards this.
DOI: 10.22271/chemi.2020.v8.i2an.9149
Pages: 2639-2645 | 628 Views 184 Downloads
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How to cite this article:
Jubuli Sahu, JL Chaudhary, Krishna Murari, HV Puranik. Impact of seasonal rainfall trend and its variability on crop production in rainshadow districts of Chhattisgarh: A case study in Kawardha district. Int J Chem Stud 2020;8(2):2639-2645. DOI: 10.22271/chemi.2020.v8.i2an.9149
