The International Institute for Science, Technology and Education (IISTE)
Abstract
Potassium is one of the three Macro primary nutrients which is necessary for plant growth. A researches review was made on the effect of potassium fertilizer on wheat,rice and sugar beet production conducted in Egypt,Turkey, Romania, pakistan ,Saudi arabia and India . In All of these areas the research findings indicated that yield and yield components of the subjected crop type is increased with the application of potassium fertilizer, nevertheless the optimum rate of K fertilizer at which highest yield recorded was different for each crop types and research areas. In Egypt,Turkey and Romania applying potassium fertilizer at the rate of 72,60 and 70 kg K2O/ha significantly enhanced yield and yield components of sugar beet respectively,Whereas in pakistan ,Saudi Arabia and India the maximum yield of wheat was recorded at the level of 60, 200 kg K2O/ha and 50 kg ha−1 K2SO4 respectively. More over In Pakistan and NewEngland the highest yield of rice was recorded at 60 and 40 kg K2O ha-1 respectively. On the other hand potassium fertilization has showed positive contribution on biotic and aboitic stress as well as improving water use efficiency of crops.So doing more researcher on the importance of K on crop production, nutritional quality and human and animal health as well as detail investigation on the level of soil K with respect to K application on specific crop production under different environmental conditions is important. Keywords: Potassium, Wheat,Rice, Sugar beet, Fertilizer
