Informatics Publishing Limited

G. N. Gupta , K. G. Prasad , S. Mohan , P. Manivachakam

Abstract

In a pot culture study varying levels of salinity were Simulated in clay, loam and sand textured soils. Based on plant survival, height, leaf weight, stem weight total plant weight, ischolar_main length and ischolar_main/shoot ratio, it was concluded that Acacia nilotica and Eucalyptus camaldulensis could be grown with less than 50% growth reduction upto 5 ds/m salinity. Acacia nilotica withstood salinity of as high as 15 dS/m. Casuarina equisetifolia was moderate in salt tolerance. Ceiba pentandra and Acacia auriculaeformes were highly sensitive tree species and did not survive beyond 2.5 ds/m.

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K. G. Prasad , O. N. Gupta , S. Mohan , V. Subramaniam , P. Manivachakam

Abstract

Nutrient content and uptake by different components (ischolar_main 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.

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