عنوان مقاله [English]
The effect of no tillage, minimum and conventional tillage were investigated on some characteristics of soil and machine on alternation of sugar beet, barley, maize, wheat in cold regions of Khorasan Razavi province. This study was conducted in split plot design based on randomized complete block design with three replications. The treatments consisted of soil tillage methods in three levels: conventional tillage, minimum tillage and no tillage in the main plots and amount of plant residues in three levels including: no residues, retaining 30 percent and 60 percent of residues in the subplots. The results showed that no tillage and minimum tillage reduced fuel consumption, operating time, mechanical power consumed in land preparation and planting operations and amount of plant residues returned compared to the conventional tillage. The conventional tillage compared to minimum tillage and no tillage reduced the diameter of the soil clods significantly. Soil tillage methods and amount of plant residues did not have a significant effect on soil penetration resistance.
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