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Nutritional analysis of coffee plantations for establishing "DRIS" standards for the Northwest region of the State of Rio de Janeiro, Brazil

Reference - 'DRIS' - standards are essential for evaluation of the nutritional status of coffee plantations, and such standards are not yet available for the State of Rio de Janeiro. In this work, 125 well-conducted plantations had their nutritional status evaluated through foliar analysis. The results obtained for those 25 plantations with productivity above 40 60kg-bags per hectare were used for developing the "DRIS" standards. The nutrients calcium, borum, zinc and potassium seem limiting for the productivity, while iron and magnesium were found in excessive amounts.

productivity; macronutrients; micronutrients; relations


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