International Potash Institute
K in the literature

Potassium Influences on Yield and Quality Production for Maize, Wheat, Soybean and Cotton
William T. Pettigrew
Physiologia Plantarum doi:10.1111/j.1399-3054.2008.01073.x (2008), English

Beneficial Effects of Potassium on Human Health
Feng J. He, Graham A. MacGregor
Physiologia Plantarum doi:10.1111/j.1399-3054.2007.01033.x (2008), English

The Effect of Potassium Nutrition on Pest and Disease Resistance in Plants
Anna Amtmann, Stephanie Troufflard, Patrick Armengaud
Physiologia Plantarum doi:10.1111/j.1399-3054.2008.01075.x (2008), English

Effect of Irrigation and Potassium on the Yield and Yield Components of Carrot
Islam, M.M., R. Sen, S.A. Mallik, and M.S. Khan.
Bangladesh J. Agric. and Environ. 2006, 2:9-15, English

Evaluation of Zone Soil Sampling Approaches for Phosphorus and Potassium Based on Corn and Soybean Response to Fertilization
Sawchik, J., and A.P. Mallarino
Agron. J. 99:1564-1578 (2007), English

Agroscope Research Programs
Hilber, U., U. Bütikofer, H.P. Bachmann, Ch. Flury, and S. Pfefferli
Revue Suisse d'àgriculture 39:271-276 (2007), French

Bilan des Éléments Fertilisants sur une Exploitation Laitière de Montagne
B. Jeangros and J. Troxler
Revue Suisse d'àgriculture 38(3):121-125 (2006), French

Comparison of No-Tillage and Conventional Plough Tillage: a Synthesis
Sturny, W.G., A. Chervet, C. Maurer-Troxler, L. Ramseier, M. Müller, R. Schafflützel, W. Richner, B. Streit, P. Weisskopf, and U. Zihlmann.
Revue Suisse d'àgriculture 39:249-254 (2008), French

Emerging Nutrient Deficiencies in Different Soil Types under Rainfed Production Systems of India
Srinivasarao, Ch., and K.P.R. Vittal.
Indian J. of Fertilizers 3:37, English