An investigation the effect of Animal manure, Biofertilizer and different levels of Phosphorus fertilizer on Yield and Grain yield components of dryland Barley

In order to study the effect of animal manure، biofertilizer and different level of phosphorus manure on yield and grain yield components of barley under dryland condition an experiment was conducted in field of Saleh-Abad region of Ilam Province in 2013-2014. The experiment design were carried out in split split plot based on a randomized complete block design (RCBD) with three replications، that animal manure include: use and non-use in main plots، Phosphorus chemical fertilizer at four levels including: non-use، use based on 33، 66 and 100 % of the plant need in sub-plots and Barvar-2 biofertilizer at two levels including: application and non- application were in sub sub-plots. In this study، grain yield، number of spike per m2، number of grain per spike and 1000-grain weight were tested and measured. Results of analysis of variance showed that all of traits affected by experimental factors. The results of the experiment، use a single bio-fertilizer Barvar-2 and animal manure had higher grain yield than non-use treatment of them. Experiment results also showed that the highest yield of barley with 3179/4 kg/ha related to treated of simultaneous use of biofertilizer، animal manure and phosphorus fertilizer 66 % of the plant need، and the lowest grain yield belonged to non-use biofertilizer، animal manure and chemical phosphorus fertilizer (control treatment) combination treatment.