اثر تیمارهای مختلف خاک‎ورزی بر عملکرد گندم در منطقه آق‎قلا

The present study was carried out in 2012-13 in Agh Ghala region (Golestan province, Iran) to evaluate the effects of tillage systems on Morvarid wheat cultivar. Ground preparation operations include three levels of plowing with moldboard plowing, chisel plowing and direct sowing with combinat machine after the previous harvesting (no-tillage) was done in a randomized complete block design with three replications, moreover, comparison of tillage systems, to determine the best treatment on wheat yield. The highest grain yield of 2533 kg/ha belonged to moldboard plowing, and no-tillage system had the lowest yield. The highest straw yield and plant height were also belong to the moldboard, but direct sowing system with combinat machine with 2.23 tillers had the highest number of fertile tillers and the lowest number of infertile tillers. In sum, of the tillage treatments, using moldboard plowing system could provide a more acceptable performance.