Abstract
A review of the effect of potassium fertilization in tropical fruit was performed because of the importance of the element potassium (K) related to increase quality, yield and fruit size, also for the many roles in physiological processes plants. The aim was to collect updated information about: K in soil, K absorption, K interaction with other nutrients, K function in plants, symptoms of K deficiency, soil pH relationship with the availability of K, nutrition of fruit trees with K. It is concluded that in most investigations potassium fertilization increased the quality, yield and fruit size; in addition, the importance of this element on the response of the plant when affected by some form of stress (biotic and abiotic) compared to control treatments.
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