Effects of Sulfur and Manure on Wheat Yield and Some Physical-chemical Properties of Soil

This research was performed to investigate the effects of two kinds of soil amendment materials on the physical-chemical properties of soil and wheat yield as factorial traits in the form of RCBD with 3 replications. Sulfur was applied in 4 levels of 0, 200, 400 and 600 kg-ha-1 and manure was added in three levels of 0, 20 and 40 ton-ha-1. Manure and sulfur were added in the first year of the experiment and in the second year the effects of these factors on soil properties and yield were studied. The results showed the interaction effect of sulfur and manure was meaningful on grain yield and harvest index. The maximum grain yield 5249 kg-ha-1 was obtained with consumption of 600kg Sulfur-ha-1 along with 20 ton manure –ha-1. Consumption of 40 ton-ha-1 manure decreased pH from 7.53 to 7.30, ρb from 1.49 to 1.26 g-cm-3 and increased EC from 0.92 to 1.2 dS-m-1 and OC from 1.05 to 1.49%. Based on the results of this research, the consumption of 600 kg/ha sulfur and 20 ton-ha-1 manure is appropriate to increase or promote quality and quantity of the yield of wheat and to improve soil properties.