Effect of seed coating with growth promoting bacteria and micronutrients on germination characteristics of corn

This experiment carried out in order to investigate the effect of seed coating with growth promoting bacteria (Azotobacter and Pseudomonas) and micronutrients (Zn, B, Mo, Cu, Fe and Mn) on germination characteristics of corn (Zea mays L. SC. 640) . Experiment was conducted as complete randomized design (CRD) with four replications at agronomy laboratory in faculty of Agricultural Science, University of Guilan in July 2014. Experimental Treatments in this research were including seed without coating, seed coating without bacteria and micronutrients, seed coating with micronutrients and without bacteria, seed coating with (Pseudomonas fluorescens strain 169) and without micronutrients, seed coating with Pseudomonas and micronutrients, seed coating with (Azotobacter chroococcum strain 12) and without micronutrients, seed coating with Azotobacter and micronutrients, seed coating with (Azotobacter and Pseudomonas) and without micronutrients, seed coating with (Azotobacter and Pseudomonas) and micronutrients. Traits that were studied including: percentage germination, rate germination, radicule length, plumule length, radicule fresh weight, plumule fresh weight, radicule dry weight , plumule dry weight, Water absorption rate, uniformity of germination and Alpha amylase activity. The results obtained showed that seed coating with a mixture of Pseudomonas and Azotobacter and micro-nutrients and seed coating with Pseudomonas and micro-nutrients had the highest of content in most of the traits between investigated treatments.