Economics of fertilizer use in corn farming in selected regions in the Philippines
1985
Aquino, E.S.
The study attempted to determine the impact of fertilizer use on corn productivity and net returns of corn farmers at the farm level. The Cobb-Douglas production function was fitted to survey data of 404 corn farms chosen at random in five selected regions for the crop year 1983. Fertilizer dummy was utilized to find the effect of fertilizer on corn yield and seed dummy was incorporated to measure the impact of adopting improved varieties in corn farming among users and non-user farms. The coefficient representing the use of fertilizer reflected a direct relation to corn yield per hectare, which was found significant in all regions. The contribution of improved varieties to increased corn output was exhibited in all corn growing areas. Details of the result and recommendation were also discussed
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