Effect of inorganic and organic fertilizers on the growth and yield of corn and their residual effects on tomato
1995
Rafols, L.A. (La Granja National Crop Research and Development Center, La Carlota City, Negros Occidental (Philippines))
Results of the study showed that corn applied with 60-30-30 kg NPK/ha (RFL) [Recommended Fertilizer Level] gave the highest grain yield of 3.35 t/ha which was comparable to 2 t/ha filter cake + 1/2 RFL and 1 t/ha commercial organic fertilizer + 1/2 RFL with 3.17 and 3.10 t/ha, respectively. Likewise, treatment 60-30-30 kg NPK/ha obtained the highest fruit yield of tomato planted after corn with 7.82 t/ha. Significant difference among the treatments was also observed on plant height of corn. The tallest was noted from Treatment 60-30-30 kg NPK/ha with 229.70 cm. However, on tomato planted after corn, plant height showed no significant differences. Economic analysis revealed that Treatment with 2 t/ha filter cake + 1/2 RFL gave the highest Marginal Rate of Return (MRR) of 279.7 percent in corn. On the other hand, MRR of 10, 42.9 percent was obtained except for the control in all treatments of tomato planted after corn
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