Document Type : Research Paper
Authors
1 Master of Science in Agricultural Mechanization Engineering, Ramin Agriculture and Natural Resources University, Khuzestan
2 Associate Professor, Department of Agricultural Machinery and Mechanization, Ramin Agriculture and Natural Resources University, Khuzestan
3 Professor, Islamic Azad University of Tehran, Science and Research Branch
Abstract
The erosion in dryland causes decrease in yield and soil quality, especially in slope lands with conventional tillage. To investigate the effects of tillage and planting methods in slope lands on erosion and yield of rain fed wheat, an experiment was conducted in 2007-2008 at Kermanshah Province. The statistical design for this research was strip split plots in randomized complete blocks (RCB) with three replications. The dimension of each plot was 4×14 meters. Two slope levels (6-8 and 10-12 percent) were arranged in main plots, using three tillage systems (conventional, reduced and no tillage), and three planting methods (hand spreading, seeding by a grain drill parallel and perpendicular to slope) were arranged in sub-plots. Run off was shown 14020/19 L/hafor 6-8 percent slope while on 10 -12%, was measured to be about 15251/02 L/ha. Sediment was 10854 Kg/hafor 6-8% slope, and 12103 Kg/ha was found for 10 -12 percent slope. A significant (P<0.01) amount of grain yield was produced (1010 kg/ha) compared to moldboard plow and sweeps where chisel and sweep ploughs were applied. No tillage system produced 960 kg/ha grain yield, but it was not significantly different compared to other tillage treatments.
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