Effects of area, yield and their interactions on change in production of major crops in Rajasthan

Abstract

This paper tries to identify these factors by undertaking a decomposition analysis with reference to area, yield and combined of both area as well as yield. The here there are two situations for change in production. Firstly the change in production is positive i.e. if average production of terminal years are more than average production of initial years.Secondly the change in production is negative i.e. if average production of terminal years are less than average production of initial. In both the cases the first expression is the area effect, the second expression gives the yield effect and third expression gives the interaction effect of area with yield. The cumulative effect of area, yield and interaction will be hundred in percentage term. Initial and terminal triennial average of area production and yield of selected crops of Rajasthan are divided into two periods 1995-96 to 2004-05 first period 2005-06 to 2014-15 second period and calculated area effect, yield effect and interaction effect through decomposition model. It could be observed the change in production has been positive for crops like Bajra, maize, barley, moth, urad, moong, groundnut, soybean, sesame, rapeseed and mustard, castor, coriander, fenugreek, cumin, garlic and chilli over the time. On other hand the change in production over time was found negative in paddy, wheat, gram, arhar, linseed, cotton, sugarcane and guar.