Response to nitrogen fertilizer and evaluation of leaf color intensity using SCMR on hybrid maize grown in Wang Hai soil series

Abstract

Chlorophyll in leaves contains nitrogen, which plays a crucial role in photosynthesis for food production, contributing to plant growth. Nitrogen deficiency affects crop yield. The study research was to determine the response of nitrogen fertilizer and evaluation of leaf color intensity using SCMR on hybrid maize grown in the Wang Hai soil series. The experimental design was a randomized complete block design with 6 treatments and 4 replications. There were T1 Nitrogen control, T2 Nitrogen fertilizer rate 0.5 times of fertilizer recommendation rate, T3 Nitrogen fertilizer rate 1.0 times of soil, T4 Nitrogen fertilizer rate 1.5 times of soil, T5 Nitrogen fertilizer rate 2.0 times of soil, and T6 Nitrogen fertilizer rate 3.0 times of soil. The results showed that, the application of nitrogen fertilizer statically significant increased height, yield, and SCMR of maize comparing with the treatment without nitrogen fertilizer application. Meanwhile, the application of nitrogen fertilizer at 1.5 times of the recommendation, maize had the highest yields and the most economic value. Therefore, to produce maize with the highest yield, economically, and fertilizer use efficiency, soil analysis should be done before planting. Fertilizer should be applied at the rate of 15-5-5 (N-P₂O₅-K₂O) kg/rai.