Leaf Nutrient Concentrations and Evironmental Factors in Relation to the Yield of Mango

Abstract

Leaf samples of mango from Yuh-Jiing area were analyzed for 3 consecutive years. Concentrations of 7 elements were compares between samples from orchards of productive, non-productive and of different geographic areas (the plain and the slopeland). No definit trend was found for the elements analyzed in relation to the fruit yield. It is tentatively concluded that leaf nutrient-element condition was not the cause of unfruitfulness of mango, a prevailing phenomenon in the recent years. Other possible factors involved in unfruitfulness were also discussed