Estudos sobre a alimentação mineral do cafeeiro: XIX. extração de micronutrientes na colheita pelas variedades "Mundo novo", "Caturra Amarelo" e "Bourbon Amarelo"

Abstract

The contents of micronutrientes in coffee berries of the varieties ""Bourbon Amarelo", "Caturra Amarelo" and "Mundo Novo" grown in three different types of soils, namely, "terra roxa", "massape-salmourão", and "arenito de Bauru", have been determined. Statiscal analysis of the chemical data permits the following conclusions to be drawn: (a) there is no difference in the chemical composition of the three varieties; (b) the average content is as follows (in ppm): (c) one bag of dry, unprocessed coffe, has roughly equal total amounts of micronutrients both in the beans and in the hulls; zinc is an exception, however.