The aims of this research are to know the difference, between nilam farm on lowland and upland, the effect of changes in input price on profitable and to know the managerial ability of the farmers in farm management by using profit function (unit output price profit function concept) and technical efficiency principle.
The location of research is Banyumas regency. The method of the research is d sampling survey. The total samples are 120 farmers taken randomly, consist of 60 nilam farmers on lowland and 60 nilam farmers on upland.
Technical efficiency is analyzed by using frontier, produrion function and economic efficiency is analyzed by using profit function generated from Cobb Douglas production function.,
The result of this research showed that profit of nilam farm on lowland is greater than the profit of nilam farm on upland. Regression coefficient of labor wage and TSP fertilizer price have negative impact on profit, therefore increasing labor wage and TSP fertilizer price the profit will decrease. The nilam farm at lowland economically more efficient than nilam farm on upland.
The labor, seed, TSP fertilizer, Naturano fertilizer and pesticide influence the production that the increase of each production factor will increase the product. Experience in nilam farm and non farm income influence positively the nilam farm management. Formal education of farmer and farmer age do not influence the farm management
Key Words: nilam farmer -- e.xperience of nilam farm -- formal education of farmer -- upland and lowlan
