Assessment Effect of Different Irrigation Regime and Fertilizer Combinations on Seed Yield, Radiation Use Efficiency and Biochemical Parameters of Corn

Abstract

New irrigation methods under different nutritional element supplies for maize production was designed and tested for evaluate quantitative and qualitative parameters by split-plot arrangement according complete randomized block design with three replications. Different Irrigation regimes was belonged to main plots (Conventional furrow irrigation: CFI or A₁, Alternate furrow irrigation: AFI or A₂ and fixed furrow irrigation: FFI or A₃). Sub plots consisted (B₁): Nitrogen + Phosphorus + or N + P as Control (C), (B₂): Nitrogen + Phosphorus + Potassium or N + P + K, (B₃): Nitrogen + Phosphorus + Potassium + Zinc or N + P + K + Zn, (B₄): Nitrogen + Phosphorus + Potassium + Zinc + Boron or N + P + K + Zn + B and (B₅): Nitrogen + Phosphorus + Potassium + Zinc + Boron + Iron or N + P + K + Zn + B + Fe. Results of analysis of variance showed that the interaction effects of different irrigation regime and fertilizer combinations on the characteristics of N Concentration, P Concentration, K Concentration, N Uptake, P Uptake, K Uptake, Number of seeds per row, 1000 seeds weight, leaf area index (LAI), Radiation use efficiency, seed yield, biological yield, number of seeds per row, was significant at 5% probability level. Interaction effects of treatments of irrigation regime and fertilization indicate that the Zn foliar increased concentrations of these elements in the seed. The highest and lowest of N, P and K uptake, seed yield and LAI were 117.56, 42.73, 55.7 kg.ha^-1, 12950 kg.ha^-1 3.86 and 113.42, 17.4, 16 kg.ha^-1, 8894 kg.ha^-1, 2.41 from Alternate furrow irrigation and (C+K, Zn, B, Fe) fertilizer treatment and fixed furrow irrigation and control respectively. The highest of light use efficiency were obtained from Alternate furrow irrigation and conventional furrow irrigation and (C+K, Zn, B, Fe) fertilizer treatment with 0.175 kg.kcal^-1.m^-2. In order to utilize the water sources efficiently and increase corn production under limited water supply, we propose the use of circular irrigation care along with instance, K, Zn, B and Fe fertilizer.