Response of wheat yield components to water stress and zeolite application in Farahan region

In order to evaluate the effect of water stress and zeolite application on yield and components yeild of winter wheat, this study was carried out in field of Arak University in Markazi province in 2009-2010. A split-plot arrangement of treatment in a randomized complete block design with three replications was used. Water stress (I0= Control irrigation, I1= Irrigation about 85% plant requirement water, I2= Irrigation about 70% of plant requirement water, I3= Irrigation about 55% of plant requirement water, were assigned in the main plots and different levels of zeolite application (Z0= without zeolite application, Z1= 3 ton ha-1, Z1= 6 ton ha-1, Z1= 9 ton ha-1) in sub plots. Each sub plot consisted of 4 rows, 5 m long with 50 cm between rows space and 5 cm between plants on the rows. In this study characteristics such as: plant height, number of grain per spike, 1000 grain weight, grain yield, Electrical conductivity of control treatment and Electrical conductivity of 50 degree water were assessed. Results indicated that un-stress irrigation (control irrigation) with average grain yield (5193 kg ha-1) and zeolite application (9 ton ha-1) variety with average grain yield (4901 kg ha-1) were significantly superior to the other treatments.