Vol. 3, Issue 1, Part J (2017)

Abstract
Water stress occurs when the available water in the soil is reduced and atmospheric conditions cause continuous loss of water by transpiration or evaporation. Water stress has deleterious effects on plant growth and development. Potassium improved the water status and relative water content of the plants, gas exchange capacity, nitrogen fixation and overall yield. A reduction in photosynthetic rate, respiration rate, total chlorophyll content, starch content and total soluble carbohydrates is observed under water stress. Application of potassium improved the overall grain yield of crop pant.