The Effect of Spraying with Micronutrients using Different Types of Nozzles on the Growth and Yield of Corn (Zea mays L.)

Abstract

Abstract A field experiment was conducted in the north of Basra Governorate during the fall season of 2019 to determine the effect of the nozzles type and spraying of zinc and iron on the growth, yield, and quality of maize (Al-Maha cultivar). The first factor was (spraying zinc 90 mg L-1 F1, iron 300 mg L-1 F2, and zinc 90 mg L-1 + iron 300 mg L-1 F3). The second factor (Nozzles type: Tip Nozzle N1, Flat fan Nozzle N2, Hollow Cone Nozzle N3). R. C. B.D design with three replications was utilized. The application of micronutrients through spraying yielded positive outcomes. Specifically, treatment F2 exhibited the tallest stem height, measuring 139.68 cm. Treatment F4 demonstrated the largest stem diameter, measuring 1.91 cm. Furthermore, treatment F4 resulted in the highest mean values for grain yield (5.44 tonne ha-1), chlorophyll content (31.73 spad), and protein content (11.039%). Regarding the second factor, it was observed that N1 exhibited superior performance in stem diameter, measuring 1.889 cm. The F2N2 treatment demonstrated superior performance in stem height, with an average measurement of 148.05 cm. Conversely, the F4N2 treatment exhibited excellence in stem diameter, with an average measurement of 1.94 cm.