Document Type : Original Article

Author

Member of Agricultural Engineering Research Department, Semnan (Shahrood), Agricultural Research and Education and Natural Resource Research Center, AREEO, Shahrood, lran.

Abstract

Conservation tillage reduces soil erosion, but there might be a concern it that for a few years it might reduce crop yield and increase plant diseases. In order to study the effects 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 were 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 were: collection and preservation of plant residues. The results indicated that 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 show in obtain from reduced tillage method with a chisel packer. The effects of tillage methods on potato soil-borne diseases (Fusarium wilt, dry rot and scab) was not significant. Reduced tillage comparing to the conventional tillage method, not only did not reduce the yield of the crop and didn’t increase the soil-borne diseases of potatoes, but also caused a decrease in the field traffic, operation time and fuel consumption. The suggestion is that the reduced tillage with a chisel packer can be replaced with the conventional tillage using moldboard plow.

Keywords

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