Economical comparison and determination of optimal inputs allocation in wheat cultivars.

This study carried out to apply economical inputs, to measure productivity of the production factors and present the mean of inputs use, head to head budget analysis of the wheat plantings activities and economical evaluation of the planted wheat cultivars in Karaj based on the collected data from 102 wheat pioneer farmers through the random sampling method. Analysis of the results on the total samples revealed that 48% of the stakeholders used newly improved cultivars of Mahdavi and Alamut. The gross income and the grain yield of this group comparing to the group using the old improved wheat cultivars of Roshan, Falat and Ghods was more than 16.7% while the production expenses of the first group was 14.3% less than the second group. Firstgroupinputs use for seed, water, labor, urea and phosphate fertilizers were 13.3, 6.7, 25.2, 7.1 and 21.5 percent less than the second group. Results of economical estimation showed that sowing newly improved wheat cultivars are more economical because of the more income and less expenses related to planting newly cultivars which was about 15.7%. Based on the estimates the variables incorporated in the model could predict 64% of the grain yield variations. The independent variables of land, water, labor, urea and phosphate fertilizers, extension service and cultivar were the most effective variables while the seed was the most influential variable and with the largest value amongst them. The pioneer farmers used inputs of land, water, labor, phosphate fertilizer and pesticides more logically because of using them in the second part of the production curve. Results of the final analysis on the productivity showed that one more unit inputs (land and phosphate fertilizer) usage by the farmers can increase the production value 43 and 5 thousand rials, respectively. So because of more seed and urea use by the farmers, it is recommended the extension agents aware farmers on the advantages of optimum use of the inputs to increase productivity and use more economically. The last issue would be on using newly advanced wheat cultivars to increase grain yield and profitability.