Agronomic and Physiological Efficiency of Hybrid Yellow Corn (Zea mays L) Varieties to Different Fertilization Rates

Casey P Lagaran, Renante D Taylaran, Apolinario B Gonzaga and Leonie Love A Harnaiz
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Casey P Lagaran: College of Agriculture, University of Science and Technology of Southern Philippines, USTP-Claveria
Renante D Taylaran: College of Agriculture, University of Science and Technology of Southern Philippines, USTP-Claveria
Apolinario B Gonzaga: College of Agriculture, University of Science and Technology of Southern Philippines, USTP-Claveria
Leonie Love A Harnaiz: College of Agriculture and Agri-Industries, Caraga State University – Ampayon

International Journal of Research and Scientific Innovation, 2025, vol. 12, issue 6, 25-43

Abstract: Corn (Zea mays L.) is a globally significant cereal crop, widely utilized for food, feed, and industrial purposes. In the Philippines, it ranks second to rice in agricultural significance. This vital crop plays a crucial role in sustaining the livelihoods of Filipino farmers. This study aimed to assess the productivity and efficiency of hybrid corn varieties under varying fertilization rates. The experimental design employed a Factorial Randomized Complete Block Design with three replications. Factor A consisted of five fertilizer treatments: control, 120N-90P2O5-60K2O Kg/ha, 60N-90P2O5-60K2O Kg/ha, 180N-90P2O5-60K2O Kg/ha, and 240N- 90P2O5-60K2O Kg/ha. Factor B comprises four hybrid varieties: B118G, P3530THR, Dekalb8899S, and NK6505. The study demonstrated significant effects on agronomic and physiological parameters of corn with varying fertilization rates. Statistically, all hybrid varieties exhibited positive responses to the application of N-P-K. Among the hybrids, NK6505 exhibited notable physiological efficiency and yield. Fertilization rates generally demonstrated a positive influence on plant growth, leading to enhanced yield attributes. The combination of 120N-90Pâ‚‚Oâ‚…-60Kâ‚‚O Kg/ha, combined with NK6505, yielded the highest net return and return on investment (ROI) of 265.20%. Thus, it is recommended that farmers adopt the combination of NK6505 with 120N-90Pâ‚‚Oâ‚…-60Kâ‚‚O Kg/ha fertilization rate to enhance the economic profitability of hybrid corn production.

Date: 2025
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