Effect of nitrogen source and Zinc foliar on growth and yield of corn (Zea mays L.)

Abstract

Afield experiment was carried out in autumn season (2012), at a farmer's field in Anbar province, Ramadi city in soil silt loam, classified as (Typic Torrifluvent),in order to study the impact of applied nitrogen fromurea, ammonium sulphate, and calcium nitrate with level (0 and 360 kg N.h-1 ), and five concentration of zinc (0.25, 50, 75 and 100 mg Zn. L-1 ) in the form of Zn-EDTA ( 14 % Zn ) as a source of zinc in growth and yield of corn (Zea mays L) variety -5018. Factorial experiment used according to design (RCBD) with three replicates, plant height leaf area, grain yield,N and Zn concentration in vegetative ,seed and soil after planting was measured. Results of the experiment showed that Ammonium sulfate fertilizer and concentration Zn ( 50mg Zn. L-1 ) achieved significant superiority in the rate of plant height, leaf area ,seed yield of plant while the ammonium sulfate achieved superiority in N concentration the vegetative seed and soil after harvests, well the Zn concentration (100 mg Zn. L-1 ) achieved superiority in Zn concentration in the vegetative seed and soil after harvests.