Response of Yield and Yield Components of Corn on Soil Use and Foliar Application of Micronutrients

To investigate the effects of micronutrient such as Fe, Zn and Complete Micronutrient Fertilizer as foliar application and using in the soil on some physiological indices of corn an experiment as a randomized complete block design with 4 replication and 10 treatments was conducted. Treatments including, control (C), foliar application of complete micronutrient in Stem elongation stage (M1), foliar application of complete micronutrient fertilizer in Stem elongation stage + ear appearance stage (M2), foliar application of Zn in Stem elongation stage (Z1), foliar application of Zn in Stem elongation stage + ear appearance stage (Z2), foliar application of Fe in Stem elongation stage (F1), foliar application of Fe in Stem elongation stage + ear appearance stage (F2), soil use of complete micronutrient fertilizer (Ms), soil use of Fe (Fs) and soil use of Zn (Zs). Analysis of variance showed that effects of different fertilizer treatments on seed yield, biological yield, number of rows in cob, number of grain in row and cob length traits were significant (p≤0.01). Also impacts of applied treatments on harvest index, cob diameter, 1000 grain weight and cob weight in 5% probability level were significant. Mean comparison of treatments showed that in all studied traits, foliar application of complete micronutrient fertilizer in Stem elongation stage + ear appearance stage (M2) and control (C) treatments had a highest and lowest effects respectively.