Effects of conservation tillage on crop yield with rotation on wheat- silage corn

Today one of the major concerns of sustainable agricultural is water and wind erosion on agricultural fields. Residue management is a way for reducing erosions، that first crop residues can produce some ddifficulties for proper work of planters of next crop. This study accede for valuating of the best manner for residue management and its effect on soil fertility. Therefore this experiment conducted in RCBD experimental design whit 4 replication in Moghan. Treatments were as below: A: Residue burning، moldboard plow and harrow disk. B: Stem chopping، moldboard plow and harrow disk. C: Stem chopping، chisel plow and rotivator. D: No tillage. After applying of each treatment 704S. c. corn genotype planted as secondary planting. after silage corn and before wheat planting treatments were as below: A: harrow disk، moldboard plows and harrow disk B: moldboard plows and harrow disk For the silage corn. Moldboard plows and harrow disk For the silage corn results showed that there are significant differences at 1% for green yield and dry matter. Results showed for the wheat there was no significant differences of yieldandtreatments on wheat residue caused a significant differences at 5% for soil organic carbon at 0-10 depth of soil surface. Results showed that wheat residue management treatments are statistically significant and lowestyield was 36. 21 t ha-1were related to no-tillage treatment. Also، lowest percent of dry matter with 8. 15 t ha-1 was related to no tillage treatment.