Effect of Soil Amendment Materials on Some of the Physicochemical Properties of Soil and Wheat Yield

Aims: This research was performed for investigating the effect of two kinds of soil amendment materials on physicochemical properties of soil and wheat yield.
Study Design: Experimental design was factorial experiments based on randomized complete block design with two factors and three replications.
Place and Duration of Study: The experiment was carried out in private field in Khoy, (Latitude 38° 46' 09" N, Longitude 45° 02' 07" E) West Azerbaijan of Iran in 2013.
Methodology: The factors included sulfur at 4 levels (0, 200, 400, 600 kg.ha-1) and organic matters (from decomposed cow manure) at three levels (0, 20, 40 t.ha-1).
Results: The results showed that main effect sulfur was significant on grain and biological yield and pH of soil. Effect of OM was significant on all of studied traits, while interaction effect of two factors was significant statistically on grain yield. Comparison of mean of traits also showed that levels of experimental factors lead to improvement in studied traits and in terms of grain yield, maximum of 5249 kg.ha-1 was related to application of 600 kg.ha-1 sulfur along with application of 20 t.ha-1 OM that showed 1625 kg.ha-1increase compared to that of the control treatment of both of experimental factors. Among different levels of sulfur the application of 600 kg.ha-1 was related to application of 20 t.ha-1 OM, which caused improvement in studied traits of soil so that when application amount of OM increased, pH, bulk density and particle density decreased, while EC, OC and soil porosity increased.
Conclusion: Considering other studied traits in this research, we can conclude that application of 600 kg.ha-1 sulfur and 20 t.ha-1 OM is appropriate for increasing or promoting of quality and quantity yield of wheat and improving of physicochemical properties soil.