Efficiency Analysisof The Use Production Inputs Farming On Soybean Groboganvarietiesin Tuko Village Pulokulon Subdistricts Grobogan District

: This research aims wereto analyze the value of cost, revenue, profits, and B/C ratio soybean farming, analyze the effect of the use of production inputs to the production soybeans, analyze the level of efficiency of useinputs soybean Grobogan Varieties in Tuko Village Pulokulon Subdistrict Grobogan District. The location of research determined by purposive method and the village of research determined by purposive sampling. The number of samples in this researchwere50 farmerselected using proportional random sampling method.The results showed the cost to produced soybean Grobogan Varietieswas Rp 9.034.866,95/ha/MT. Revenue that received by farmer was 12,343,463.41/ha/MT and farmer's profit was Rp 3.308.596,46/ha/MT. B/Cratio that showed was0,44. To analyze the relationship between inputs with production used a regression model with the modified model Cobb-Douglas function. Model equation production function as follows: Ln Y = 5,732 + 0,578 Ln X1 + 0,129 Ln X2 + 0,296 Ln X3 – 0,279 Ln X4 + 0,135 Ln X5 – 0,460 Ln X6 + e.Regression analysis showed that the use of land, labor, seeds, organic granules fertilizer, Phonska fertilizers, and insecticides Atabron jointly significant effect on production. Individually, production factors of land and seed have a real effect on production, while the production factors of labor, organic granules fertilizer, Phonska fertilizers, and insecticides Atabron no real effect. Based on this results of the research, the combination of inputs in the production of soybean Grobogan Varieties in Tuko Village Pulokulon Subistrict Grobogan District not efficient