IPI Proceedings The First National Potash Symposium Dar es Salaam, Tanzania, 28-29 July 2015 Potassium for Sustainable Crop Production and Food Security The First National Potash Symposium Dar es Salaam, Tanzania, 28-29 July 2015 Potassium for Sustainable Crop Production and Food Security Edited By: Mkangwa, C.Z., J.D.J. Mbogoni, G.J. Ley, and A.M. Msolla Sponsored by Organized by Ministry of Agriculture Food Security and Cooperatives Agricultural Research Institute Mlingano National Soil Service P.O. Box 5088, Tanga, Tanzania African Fertilizer and Agribusiness Partnership (AFAP) Amverton Towers, 1st Floor, Chole Road, Dar es Salaam, Tanzania. www.afap-partnership.org Correct citation: Mkangwa, C.Z., J.D.J. Mbogoni, G.J. Ley, and A.M. Msolla (eds.). 2015. Potassium for Sustainable Crop Production and Food Security: Proceedings of the First National Potash Symposium in Tanzania, 28-29 July 2015, Dar es Salaam, Tanzania. 190 p. International Potash Institute, Switzerland. 2020 © All rights held by International Potash Institute (IPI) Industriestrasse 31 CH-6300 Zug, Switzerland T +41 43 810 49 22
[email protected] www.ipipotash.org ISBN: 978-3-905887-27-3 DOI: 10.3235/978-3-905887-27-3 Printed in Israel Contents Page Foreword ............................................................................................................. 5 Keynote Papers 1. The status of exchangeable potassium in major soils of Tanzania .................. 7 2. Role of potassium in human nutrition ............................................................ 27 Potash Distribution in the Soils of Tanzania 3. Potassium status in some soils: the case of Northern, Central and Eastern zones of Tanzania .................................................................................. 40 4. Status of exchangeable potassium in soils of selected landscapes of the Southern Highlands in Tanzania .......................................................................