Document Type : Original Article
Author
academic member
Abstract
Although conservation tillage reduces soil erosion, it is feared that in the early years it will reduce crop yield and increase plant diseases. In order to study the effect of different tillage methods on potato yield and the severity and rate of infection of the main soil-borne diseases of potato (fusarium wilt, dry rot and common scab), an experiment was conducted in the form of a strip plot statistical design based on completely randomized blocks with three replications, where the horizontal factor includes tillage methods: 1- Plowing with a moldboard plow (Conventional method), 2- Reduced tillage with a chisel plow, 3- Plowing with a disc plow and 4- Reduced tillage with a chisel packer, and the vertical factor included: collection and preservation of plant residues. The results showed in the first year, the highest yield of potatoes related to conventional tillage method. However, in the third year of the experiment, the highest yield of potatoes was related to the reduced tillage method with a chisel packer. The effect of tillage methods on potato soil-borne diseases (fusarium wilt, dry rot and scab) was not significant. According to the results of reduced tillage compared to the conventional tillage method, not only did it not reduce the yield of the crop and increase the soil-borne diseases of potatoes, but it also caused a decrease in the field traffic, operation time and fuel consumption. Therefore, it is suggested that the reduced tillage with a chisel packer replaces the conventional tillage with a moldboard plow.
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