PJB-2006-156
ALLEVIATING ADVERSE EFFECTS OF WATER STRESS ON YIELD OF SORGHUM, MUSTARD AND GROUNDNUT BY POTASSIUM APPLICATION
SHAHID UMAR
DOI:
Abstract
The amount of soil moisture available to plants in arid and semi-arid regions is a major limiting factor for crop yield. Under such conditions, potassium fertilization proved helpful in mitigating the adverse effects of water stress. The interaction of plant K status and water stress on yield and water relations of mustard, sorghum and groundnut was studied. Plants were subjected to increased soil water stress conditions, tissue K concentrations analysed at peak growth stage (flowering) and relationships worked out between tissue K concentrations, yield parameters and relative water content. The water content of the leaf tissue was significantly increased by K application and the highest increase in RWC was 14.7 %
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