Effects of Different Levels of Nitrogen, Phosphorus and Potassium on Leaf Nutrient Status and Its Relationship To Fruit Yield in Passion Fruit Variety Purple (Pass/Flora Edulis Sims)

A fertilizer trial conducted on passion fruit purple variety with different levels of NPK was utilised to study the relationship between leaf nutrient status and fruit yield. The increase levels of N, P and K application was reflected in leaf N, P and K status of leaves respectively during flowering stage. The correlation studies between leaf nutrients and fruit yield indicated that there were significant correlations between petiole N and fruit yield and leaf K and fruit yield. The increasd levels of K₂0 application significantly increased fruit yield. The intra correlations between various leaf nutrients indicated that there were synergistic effects of N on P and Fe, P on Fe and Ca on Fe. Further antagonistic effect of K on Mg and Ca on Mn were noticed