اثر نظامهای مختلف خاکورزی بر روی شاخصهای رشد و عملکرد ذرت علوفهای Effect of different tillage systems on the index growth and corn forage yield

Abstract
New figures (varieties) alone can not produce an increase in agricultural production but with advances in agricultural techniques appropriate correction must be applied to produce maximum performance be achieved. Due to vast areas of cultivated maize in Golestan province and the country, it is essential that the best type of soil tillage for reduce costs associated with plowing, weed control, increase crop yield per unit area can be used to specify and practical. The main purpose of implementing conservation tillage methods, maintenance of appropriate amounts of soil and water remains on the soil surface for erosion control farms, reducing energy and water conservation and soil. To study the effects of different tillage systems on the index growth and corn forage yield in the city Azadshahr, experimental design was Nested. Tested in three separate land parcels (for the implementation of the three different tillage systems), the size of each 30 × 50 m was performed. At the end of the growing season in order to assess the performance of each plot 15 samples using a dominance in one square meter of harvested and corn plant fresh weight of each sample was weighed. The results showed that the amount of forage yield of 71 tons per hectare Conventional tillage system and with the lowest yield of 64 tons per hectare for no-tillage system were obtained with the other two tillage systems were significantly different .