Physiological Response to Combined Application of Nitrogen Fertilizer and Chicken Manure on Grain Yield of Wheat (Triticum Aestivum L.) At Halfa Elgadida Sudan

This study was conducted at the Demonstration Farm of Fuculty of Agriculture, Kassala University during 2010/2011 and 2011/ 2012 seasons in the Halfah Elgadidah, Sudan. Randomized complete plot design (as split trail) with four replications was used in this study. The treatments were three levels of N (N0, N1 andN2) corresponding to N fertilizer rates of zero, 43, 86 kg N/ha. Also, organic manure treatments are -M and +M corresponding to zero and 4 tons of chicken manure/ha. The main objective of this study is to investigate the effects of combined application of N and chicken manure on physiological traits and grain yield in wheat. The obtained results showed that, the treatments which received high dose of nitrogen fertilizer or chicken manure solely or mixed together, resulted in high dry matter production , higher values of LAI, leaf area duration, crop growth rate, net assimilation rate and grater grain yield. The positive strong correlations between these characters and grain yield indicated their unlimited contribution to final grain yield and may be key factors for wheat production in the study area.