Investigation on Selected Minerals Content of Potato Tubers (Solanum tuberosum L.) during Storage at 7oC as Effected by Application of calcium, Magnesium, Phosphorus Fertilizer
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Recently, there is a growing interest on calcium application on potato drops especially among researches and the farmers. However, to anticpate the interaction of calcium with other nutrients, which may suppress the effect of calcium, calcium was often applied together with other fertilizers, such as with magnesium and phosphorus as applied in this research. The goal of calcium application was to increase the calcium content of potato tubers and further would affect the tubers towards a better quality during storage. Up to level of given fertilizers, therewas no increase of minerals content of the the fresh harvested tubers, i.e. calcium, magnesium, phosphorus, and pottasium, have been found. Meanwhile, during 18 weeks of investigated storage there was no sognificant changes of mineral content, but after the 18-th week of storage the result showed a significant mobilization in accordance with the dormancy-breaking phase.