ISSN: 1659-2751

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Nutritional Comparison of Fruiting Terminals and Non-fruiting Terminals at Different Phenological Stages of Orange in the Tropics

Abstract

Foliar analysis of crops is used as a tool to ascertain the nutritional status of plantations. During the present study, monthly samplings, over a period of five months, in the phenological stages of pre-flowering, flowering and post-flowering of an orange crop were made. Samples were taken considering two variables: i) fruiting terminals (CF) and ii) non-fruiting terminals (SF) from the Valencia red orange variety grafted on the stock Flying Dragon (Poncirus trifoliata) on a plantation located in the northern region of Costa Rica. The cumulative results for the sample period presented significant differences in the variables CF and SF (p<0.05). However, during some months, the results showed no differences, in the month of May for macronutrientes (N, P, K, S, Mg and Ca) and during the months of March and June for the micronutrients (Fe, Cu, Zn, Mn and B).

Key words: leaf sampling, fruiting terminals, non-fruiting terminals, Flying dragon, Valencia.

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