بررسي اثرات روشهاي مختلف خاك ورزي بر عملكرد و اجزاي عملكرد دو رقم جو

Effect of tillage methods on barley yield and yield components

In order to investigate the effect of different tillage methods on agronomic criteria of two popular varieties of six row -winter barley (Valfajr, Karoon Darkavir); in Kerman, an experiment was conducted during growing seasons of 1378 - 79 and 1379 - 80.The experiment was on the basis of split plot design with 4 replications. Treatments were combination of two barley varieties and three levels of tillage methods{a: conventional tillage, b: conservative or minimum tillage, and c: no tillage). The results illustrated that yield of Karoon dar kavir was significatly higher than Valfajr yield in 3 tillage methods. Valfajr yield was higher in conservative tillage; and tillage methods had no effect on Karoon darkavir yield. Number of fertile tillers /m2 was higher in 3 tillage methods, especially in no tillage. Number of seed /spike and 1000 seed weight were not significantly affected by tillage methods; but interaction effects of tillage methods and varieties on these two different variables were significant. Different tillage did not change harvest index and seed protein content in both varieties. The result indicated that Karoon darkavir could lead to higher yield, compare to Valfajr in Kerman; but both varieties are suitable for conservation and no tillage methods than conventional.