Application of Mitscherlich-bray Equation to Establish Fertilizer Recommendation for Strawberry under Adtuyon Clay Loam
Gerlie S. Jambaro
Department of Plant Science, College of Agriculture, Mindanao State University Marawi Campus, Lanao del Sur- 9700, Philippines.
Louell M. Ozarraga
Department of Plant Science, College of Agriculture, Mindanao State University Marawi Campus, Lanao del Sur- 9700, Philippines.
Edgel O. Escomen *
Department of Plant Science, College of Agriculture, Mindanao State University Marawi Campus, Lanao del Sur- 9700, Philippines.
*Author to whom correspondence should be addressed.
Abstract
The nutrient requirement of strawberry plants is high making them very responsive to fertilization. This study utilized the Mitscherlich-Bray equation to determine the theoretical maximum yield as the basis of comparison to the actual yield. The economics of fertilizer application was also considered in the determination of the fertilizer recommendation. The theoretical maximum yield of the study is 12.29 t/ha-1. Strawberry is found responsive to nitrogen and potassium fertilization. The application of 225-225-360 kg ha-1 of N, P2O5, and K2O, respectively could achieve 95% of the theoretical maximum yield, however, it had a much higher amount spent on fertilization per kg of fruit yield compared to the current Hafza’s recommendation. The fertilizer recommendation of 150-150-240 kg ha-1 of N, P2O5, and K2O, respectively still the best option under Adtuyon clay loam for both economic and horticultural benefits.
Keywords: Fertilizer recommendation, mitscherlich-Bray equation, theoretical maximum yield, actual yield