Paper Information

Journal:   JOURNAL OF AGRICULTURAL SCIENCE (UNIVERSITY OF TABRIZ)   FALL 2015 , Volume 25 , Number 3; Page(s) 103 To 118.
 
Paper: 

ASSESSMENT OF GROWTH AND SOME CHARACTERISTICS OF WHEAT CULTIVAR OF ALVAND UNDER DEFICIT IRRIGATION AND FOLIAR APPLICATION OF POTASSIUM DI-HYDROGEN PHOSPHATE

 
 
Author(s):  JAHANBIN SHAHROKH*, VAFAPOUR MASOUD, YADAVI ALIREZA, BEHZADI YAGHOOB
 
* DEPT. OF AGRONOMY AND PLANT BREEDING, FACULTY OF AGRICULTURE, YASOUJ UNIVERSITY, YASOUJ, IRAN
 
Abstract: 

In order to study the effect of deficit irrigation and foliar application of potassium di-hydrogen phosphate on physiological characteristics of winter wheat (Triticum aestivum L.) cultivar Alvand, a split- plot experiment in a randomized complete blocks design with three replications was conducted in 2008- 2009 season at the Yasooj Agriculture Research Station and Natural Resources. Main plots consisted of three irrigation regimes (full irrigation, cut of irrigation at the beginning of stem rise to the heading and cut of irrigation of heading stage to the end of the growth period), and subplots consisted of five level of foliar application of potassium di-hydrogen phosphate as the zero (foliar application only with water as control), 3, 6, 9 and 12 kg.ha-1 KH2PO4 as foliar spraying. The results showed that the effects of irrigation regimes and potassium di-hydrogen phosphate treatments on all traits were significant. The interaction of irrigation and foliar application of potassium di-hydrogen phosphate on growth and yield traits were significant. Drought stress reduced leaf chlorophyll concentration and phosphorus content, and increased leaf proline and soluble sugar and protein content in grain. potassium di-hydrogen phosphate treatments increased phosphorus, proline and soluble sugars of flag leaf and protein content of seed. Foliar application of potassium di-hydrogen phosphate only under drought stress conditions improves grain yield and growth indicators and in the condition of full irrigation did not observed the significant difference between the levels of foliar application of potassium di-hydrogen phosphate.

 
Keyword(s): DROUGHT STRESS, FOLIAR APPLICATION, LAI, POTASSIUM DI-HYDROGEN PHOSPHATE, PROLINE
 
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