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This document summarizes research on the effect of PK fertilizers and frequency of K application on peanut production in Alfisol upland soil. The research found that applying zinc ammonium phosphate (ZA) fertilizer increased nutrient absorption and dry pod yield by 51% compared to urea fertilizer. Applying 50kg of single superphosphate (SP36) per hectare only increased nutrient absorption and yield by a small amount. Applying 100kg of potassium chloride (KCl) per hectare once at planting time was the optima

Author

Choirun Nisa'

Language

EN