International Science Community Association International Research Journal of Social Sciences 2319 - 3565 2 4 2013 April 14 Tools and Techniques Used in Customer Relationship Management Inside Software Company 1 6 EN Tuta M. 1 Faculty of Marketing, Academy of Economic Studies, Bucharest, ROMANIA Zara I.A. 2 > Research Paper 2013 2 18 2013 April 14 This paper describes how the regression analysis of temporal variability of crop yield and temperature can be used as a tool to easily assess the quantitative impact of increased temperature, due to climate change, on crop yield. The time series crop yield and weather data are readily available for different districts. The last 30 years yield data of the seven mustard growing districts and the weather data of Hisar were used to model the yield of mustard crop to assess the impact of temperature on the yield of mustard in Haryana. It was estimated that an increase of one degree centigrade in the temperature during the crop growth period will increased the mustard yield in the state by around 140 Kg ha-1 Copyright@ International Science Community Association