Effect of nitrogen fertilizer sources and foliar spray of humic and/or fulvicacids on yield and quality of rice plants

Abstract

To study the effect of nitrogen fertilizer sources and foliar spray of organic acids on rice crop, In this regard, this test was performed in 2010 and 2011 years at El- Ge mmeiza Agricultural Research Station, El-Gharbia Governorate located at lat. 30.47, long 31.00 and 1 4.80 m above the mean sea; the used design was spli t plot randomized complete block with 3replications. Main plots, two nitrogen fertilizer sources: anhydrous a mmonia & urea while subplots, were treated with foliar appli cation of humic and / or fulvic acid resulting 4 tr eatments including: controls (without foliar spray), humic, fulvic and humic +fulvic acids were considered.