Influence of Different Types and Amounts of Organic Manure on Soil Physical Properties, Wheat (Triticum aestivum L.) Yield and Correlation between Traits

Manure not only supplies many nutrients for crop production, but it is also a valuable source for increasing soil organic matter content and improving soil structure. To increase organic manure content as well as improve the wheat production adding plant residues and livestock to soil is necessary. The experiment was conducted in Shavoor Research Station to determine seed yield and soil physical characteristics under different amounts and sources of organic manure through combined split plot experiment based on randomized complete blocks design with three replications for a duration of five mentioned years. Main plots included seven types of organic manure (cattle and hen manures, sugarcane filter cack and bagasse, wheat straw and green manure which were compared with control) and three amounts of manure (2.5, 5 and 10 t.ha-1) witch belong to sub plots. Result of analysis of variance indicated the effect of different types of organic manure on seed yield, 1000-seed weight, number of spike per square meter, spike length, plant height, bulk density and infiltration rate was significant. Also the effect of year and different amounts of organic manure on all measured traits instead bulk density, infiltration rate and number of spike per square meter was significant. Wheat straw plays a major role in improving the physical properties of the soil. Sugarcane filter cack, sugarcane bagasse and cattle manure (at least 2.5 tons per hectare for four years or more) had a positive effect of increasing wheat yield, seed weight, number of spike per square meter, spike length and plant height.