Response of peanut [Arachis hypogaea (L.)] to SPDA [Southern Philippines Development Authority] organic fertilizer on limed Adtuyon clay soil.
1985
Bustos M.O. | Agus E.L.
Application of 500 kgs SPDA organic fertilizer per hectare to limed Adtuyon clay significantly increased the average number of seeds and increased the peanut yield from 0.619 ton/ha in the control to 1.609 tons/ha. Addition of 500 kgs SPDA organic fertilizer per hectare significantly increased the percent organic matter content and the available phosphorus from 4.11 and 23.60 ppm P to 9.32 and 85.26 ppm, respectively. The application of 1/3 organic fertilizer and 2/3 organic in the control to 333.333 ppm K. The application of 500 kgs SPDA organic fertilizer per hectare is considered the most economical in terms of cost of inputs, earning a net income of P22,250.00 and a net return per pesos invested of P1.59. The use of inorganic fertilizer netted only P8,013.86 with a net return per peso invested for only P0.5575.
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