On the other hand, potassium is found to be the key element in banana nutrition. It increases both the yield and quality of fruits. High potassium and calcium will give high dry matter and glucose content in the peel and pulp of banana fruit (Caussiol, 2001). Respiration was lower in potassium deficient plants and therefore the main effect of low potassium supply on dry matter production would be through reduction of photosynthesis. On the contrary, low levels of nitrogen, phosphorus and magnesium give high dry matter in the pulp. Low potassium produces thin fruits and fragile bunches. Excess potassium over nitrogen causes a premature ripening of fruits (yellow pulp). In addition, a potassium supply above that which influence growth and yield, changes in reducing and total sugars have reported. As potassium supply increases, the amount of sugar will increase and the acidity decreases. Thus potassium supply has an effect on fruit quality over and above its influence on yield (Gowen, 1995).