Subject Areas : crop production

سهيلا فرهمند ¹ , محسن رشدي ²

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Received: 2012-12-06 Accepted : 2013-12-16 Published : 2015-10-08

Keywords: Vegetative characters – drought stress – micro-nutrients – wheat - spraying,

Abstract :

To investigate the impact of drought stress in different stages of wheat growth and consumption of micro-nutrients on the yield of Zarrin wheat, an experiment was carried out in factorial complete random design with four replications in Mehr 1390, on a farm in Maku vicinity. In this plan, non-irrigation in three levels ( tillering, grain filling, and non-stop irrigation ) as the first factor, and the consumption of micro-nutrients in three levels ( stem growth and tillering, stem growth and grain filling, tillering and grain filling ) were considered as the second factor. The results of variance analysis showed that non-irrigation had impacts on the stem height, length of cluster, grain yield, 100-grain weight, protein yield, and biologic yield with one percent probability. In all studied traits, the highest amount was allocated to continuing irrigation together with spraying of micro-nutrients in the stage of clustering plus grain filling. So as the highest yield with continuation of irrigation was 426.9g per square meter and the highest weight of 100-grain was related to the irrigation together with micro-nutrient elements spraying on the stage of clustering, grain filling which had more sensitivity than other growth stages; and the flowering stage had the highest sensitivity to lack of water.

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