Fertilisation in <I>Eucalyptus grandis</I> on Severely Truncated Soil. III: Nutrient Uptake

Abstract

Nutrient content and uptake by different components (root stem, twig and leaf) of one year old Eucalyptus grandis as affected by urea and superphosphate application at Minmutti, Kerala was estimated. In general, N, and K concentration decreased due to N and P fertiliser application either alone or in combination. However, uptake of N, P and K increased with each dose of application of N and P fertilisers and generally uptake values were maximum in N₇₅ P₇₅ treatments. Percent recovery of N was greater (79.1%) in N₇₅ P₇₅ treatment and P recovery (18.8%) In N₇₅ P₇₅ treatment.