Coffee Nutrition--Part I. The Determination of Nutritional Status and Fertilizer Requirements of Arabica Coffee in New Guinea.

Abstract

Field and laboratory methods used in the study of the nutrition of Arabica coffee in New Guinea are described. Foliar analysis, in particular, has been developed to an extent where it is proving useful in the diagnosis of deficiencies and the assessment of fertilizer requirements of New Guinea coffee plantations. Above normal, normal, subnormal and deficient categories for leaf levels of major nutrients are proposed and values obtained under New Guinea conditions are presented and discussed.