Effect of potassium and zinc application on yield and yield components in normal irrigation and deficit irrigation

Subject Areas : Journal of Plant Ecophysiology

M. Ghalenoei ¹ , Gh. Moafporian ² , M. Drostkar ³

1 - دانش آموخته کارشناسی ارشد دانشگاه آزاد اسلامی واحد ارسنجان
2 - استادیار مرکز تحقیقات کشاورزی ومنابع طبیعی فارس
3 - استادیار مرکز تحقیقات کشاورزی ومنابع طبیعی فارس

Received: 2014-11-03 Accepted : 2014-11-03 Published : 2014-11-01

Keywords: Zinc sulfate, Wheat, Deficit irrigation, Grain yield,

Abstract :

Due to water limitation, using nutrients can reduce the loss resulted from stress. In order to investigate the effect of zinc Sulfate and potassium sulfate in two irrigation methods, an experiment based on split factorial in a randomized complete block design (RCBD) with three replications was conducted. Two irrigation methods (conventional irrigation and deficit irrigation) were considered as main plots and different levels of zinc (zero, 15, 30 and 45 kg/ha) and potassium sulfate (zero, 75, 150 and 225 kg/ha) as sub plot. The results showed that the spike length, number of grains per spike, grain yield, biological yield and 1000 grain weight in conventional irrigation were more than deficit irrigation. Application of 45 and 225 kg/ha zinc sulfate and potassium sulfate produced the highest value of these traits. There was no significant difference between the two levels 30 and 45 kg/ha application of zinc sulfate and 150 and 225 kg/ha potassium sulfate. In deficit irrigation application of 30 kg/ha zinc sulfate or 225 kg/ha potassium increased grain yield to normal irrigation values. With the development of deficit irrigation using anti-stress nutrients such as zinc and potassium can be effective in amplification of irrigation methods.