Impact of Changing Climate on Agricultural Productivity and Farm Income in Northern Dry Zone of Karnataka

Abstract

Spatio-temporal data on climatic parameters of thirty-five taluks of the Northern Dry Zone newline(NDZ) was collected from the year 1981-2019. Secondary data concerning cropping pattern, newlineproductivity, Farm Harvest Prices (FHP) etc was collected from DES, Bengaluru and district newlineoffices of the NDZ from 1998-2019. Primary data was collected on rainfed farmers newlineperception of changing climate, socio-economic conditions, coping strategies employed newlineduring the year 2019-2020 of the selected taluks through a personal interview method. newlineDavangere dry taluk (i.e., Harapanahalli taluk) received the highest annual average newlineprecipitation (PCPN) and Relative Humidity (RH) and lowest annual average maximum newlinetemperature (Tmax). The annual average PCPN (653.49 mm), Tmax (32.87 ° C) and RH newline(55.92 %) was observed in the NDZ. The annual average Minimum Temperature (Tmin) in newlinethe NDZ was 20.09 °C with significant Compound Annual Growth Rate (CAGR)of 0.0654 newlineand a Co-efficient of Variation (CV) of 1.73. The CV of climatic parameters was highest in newlinePeriod-III (2001-2010). The per cent of the amount of annual average PCPN and average no. newlineof rainy days in the kharif season was decreasing and shifting to rabi season and from rabi newlineseason to summer season. Thus, creating a season shift. newlineArea and production of maize and chickpea crop, was found significantly increasing in newlineBagalakote, Balllari, Koppal and Vijayapura district dry taluks. Most of the crop s yield was newlineaffected positively by annual average PCPN. Doubled annual average PCPN affects newlinegreengram, wheat, chickpea and safflower yield negatively. Annual average Tmax affects newlineyield s of greengram, rice, wheat, horsegram, and safflower crops negatively. Annual average newlineTmin affects yield level of maize and pigeonpea negatively whereas for sugarcane, rice, wheat newlineand chickpea positively. Increase in annual average Tmax was affecting cropping area newlinepositively in case of rice, wheat, maize and chickpea crops whereas, in case of RH cropping newlinearea was affected negatively in maize, wheat and chickpea crops. newlineThe c