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Growth, physiology, and biochemical activities of plant responses with foliar potassium application under drought stress – a review

Ahmad, Zahoor, Anjum, Shazia, Waraich, Ejaz Ahmad, Ayub, Muhammad Ashar, Ahmad, Tanveer, Tariq, Rana Muhammad Sabir, Ahmad, Rashid, Iqbal, Muhammad Aamir
Journal of plant nutrition 2018 v.41 no.13 pp. 1734-1743
biochemical pathways, crops, drought, plant growth, plant response, potassium, stomata, water stress
Drought stress affects plant growth and ultimately yield is reduced. Potassium (K) is an essential macronutrient that is required to increase the growth and yield under drought. K plays an important role in osmotic adjustment, opening and closing of stomata, and enzymes activation. K is the component of plant structure that optimizes many physiological as well biochemical processes and ultimately improves the plant growth and yield. This review mainly covers the following topics: impact of drought on plant growth, physiological and biochemical characteristics, the role of K in plant growth, and physiology under drought stress. K is also responsible for enhancing the growth as well as yield attributes of crops under drought stress conditions by altering the physiological and biochemical process.