Probability Analysis of Critical Dry Spells of Beed and Jalna Districts of Marathwada Region
AM Kamble *
Department of Soil and Water Conservation Engineering, College of Agricultural Engineering and Technology, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani-431402 (M.S.), India.
UR Sonawane
Department of Soil and Water Conservation Engineering, College of Agricultural Engineering and Technology, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani-431402 (M.S.), India.
*Author to whom correspondence should be addressed.
Abstract
Information on dry spell analysis plays an important role in proper utilization of available rainwater resources. In the present study, probability analysis of critical dry and wet spells along with onset and withdrawal of rainy season was estimated for Beed and Jalna districts of Marathwada region of Maharashtra. Results indicated that, the average date of OEM was 20 June and 11 June and its withdrawal was 14 Oct and 22 September were observed in Beed and Jalna respectively. Data on average number of first, second and third critical dry spell (CDS) were also estimated and is indicated that a greater number of CDS i.e. (04) were observed in Jalna. Similarly, data on wet spells indicated that, Jalna accounts 108 wet spells and 94 wet spells were observed in Beed district. Results on Fortnightly dry spell probability analysis showed that, Mean duration of critical dry spell for Beed and Jalna district was observed as 18.93 was highest during second fortnight and 13.96 days was highest during seventh fortnight. These findings are helpful to study area for understanding the events of occurrence of dry spell and wet spell for effective agricultural planning and to decrease the adverse effects of dry spell at sensitive crop development stages, for water resource management.
Keywords: Dry spell, wet spell, rainfall, onset of monsoon, probability