Abdul Wakeel is an Associate Professor (Tenured) at University of Agriculture Faisalabad. He received PhD degree in agriculture from Justus Liebig University Giessen, Germany, and worked there as a post-doctoral researcher afterwards with Prof. Sven Schubert. He also worked with Prof. Konrad Mengel and shared his legendary experiences of potassium nutrition. Dr. Wakeel coordinated the research and extension activities of International Potash Institute Switzerland in Pakistan for several years and has extensive experience of potash fertilization in Pakistan and south Asia. Dr Wakeel is working on sustainable nutrient management under changing climate. Currently, he is chairman of Pakistan Agricultural Scientists Forum and managing editor of Pakistan Journal of Agricultural Sciences. Muhammad Ishfaq is a researcher at the College of Resources and Environmental Sciences, China Agricultural University, Beijing, China. His major research interests areplant-soil interactions, plant physiology, root biology, soil health, and molecular plant nutrition. He graduated in soil science from the University of Agriculture Faisalabad, Pakistan, and worked as a research associate to promote precise and balanced use of fertilizers in Pakistan. Ishfaq is actively engaged in different research and developmental activities and published several peer-reviewed SCI papers in reputed journals. He was nominated for International Plant Nutrition Institute (IPNI) Scholar Award-2018 in recognition of an outstanding scholastic record, and appreciation of contribution to the agricultural sciences.

• Chapter 1. Introduction.- Chapter 2. Potassium Dynamics in Soils.- Chapter 3. Potassium in Plants.- Chapter 4. Phytoavailability of Potassium.- Chapter 5. Potassium Evaluation in Soils.- Chapter 6. Potash For Quality Of Agricultural Commodities.- Chapter 7. Potassium Biofortification And Human Nutrition.- Chapter 8. Potash Research In Pakistan.- Chapter 9. Use Of Potash In Pakistan .- Chapter 10. Strategies To Improve Potash Use In Pakistan.- Chapter 11. Future Research Perspectives.