Effect of Bio-Fertilizer on physiology of growth and development of maize ( Zea mays L.) in Sulaimani region

Abstract

Effect of inoculation with Phosphorus biofertilizer and different dozes of nitrogen and P 2 O 5 on the physiology of growth and development of maize were studied through conducting two different field-experiments at two different locations, Bakrajo (35˚34˝35˚34˝ 307´N, 765masl) and Kanipanka location (35˚22˝35˚22˝ 37´N, 545masl), in sulaimani region. The treatments included, T 1 (no biofertilizer, only recommended NP) , T 2 (50% recommended NP+ Phosphorus biofertilizer), T 3 (Recommended N+ phosphorus biofertilizer), In addition to vegetative traits (such as plant height, LAI, No. of days to 50% silking, No. of days from 50% silking to physiological maturity(PM)), and reproductive traits (such as 500kernel weight, Biological Yield (BY), Yield, and Harvest Index(HI)), the root-shoot ratio(R/S) was studied in three different stages of growth pre-silking, at-silking and post-silking, results showed increasing in dry weight of root-shoot ratio and significant differences among studied traits, showing positive response of maize hybrid to phosphorus biofertilizer..