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Verma, K. S.
- Decomposition Pattern and Nutrient Dynamics in Leaf Litter of Populus deltoides Marsh. In Himachal Pradesh
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Indian Forester, Vol 132, No 4 (2006), Pagination: 456-466Abstract
Decomposition rates and nutrient dynamics of Populus deltoides litter was investigated in three year old coppiced plantation situated in the mid-hills of Himachal Pradesh using the nylon net bags. Complete loss of Populus leaf litter was achieved in 20 months. The decomposition constant (k) was worked out to 1.27. Significant and a positive correlation was observed between decomposition and climatic parameters viz., rainfall and temperature (R2 = 0.61), whereas temperature did not exhibit any significant influence on the decomposition rate. Nitrogen (N), phosphorus (P), potassium (K), calcium (Ca) and magnesium (Mg) dynamics in decomposing litter revealed that concentration of nitrogen, phosphorus and calcium did not follow any specific trend during the decomposition process. Potassium and magnesium concentration, however, revealed a decreasing trend throughout the study period. Changes in absolute amount, on the other hand, followed a release pattern through the study period for N, K and Mg. P and Ca, however, depicted a three-phase pattern i.e. leaching, immobilization and release during the entire course of investigations.- Nutrition of Robinia pseudacacia L. as Influenced by Phosphorus and Molybdenum
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Indian Forester, Vol 120, No 12 (1994), Pagination: 1080-1083Abstract
Effect or four levels of phosphorus (0, 30, 45 and 60 kg P2O5 ha-1) and three levels of molybdenum (0,40 and 80 g Mo ha-1) has been studied on concentration and uptake of N, P, K and Mo by R. pseudacacia seedlings. N, P, K and Mo concentration as well as their uptake enhanced significantly with the application of phosphorus whereas with molybdenum application, only P, K and Mo showed significant enhancement. However, combined application of both, phosphorus and molybdenum proved highly effective in increasing P, K and Mo content and uptake in R. pseudacacia.- Response of Black Locust (Robinia pseudacacia Linn.) to Phosphorus and Modybdenum Application under Nursery Conditions
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