Nature Environment and Pollution Technology

S. D. Sonkar ¹

Affiliations
1 Silviculture & Joint Forest Management Division, Tropical Forest Research Institute, Po. RFRC, Mandla Road, Jabalpur-482 021, M.P., IN

Abstract

The present investigation deals with the response of fertilizers on the survival and growth of 30 months old Albizia procera plantation raised on shallow, murrumy and gravelly soil. The height and radial growth of plant increased significantly with the application of nitrogen and phosphorus fertilizer singly or in combination with each other. Though, the response of phosphorus as a whole was found to be instrumental in enhancing growth of the plant, the nitrogen dose over 75g/plant applied in the form of urea adversely affected survival of the plant. Among 16 treatment combinations (four different phosphorus doses and four different nitrogen doses), the treatment combinations of 75g phosphorus and nitrogen each/plant was found to be best for survival and height of the plant. The maximum radial growth was obtained in the treatment combination receiving 75g/plant phosphorus and 50g/plant nitrogen. The Relative Economic Effectiveness (REE) due to different fertilizer treatments indicated that the REE for the best height growth was 75g/plant phosphorus and nitrogen each, whereas REE for the best radial growth was worked out under the treatment receiving 75g/plant phosphorus and 50g/plant nitrogen.

Keywords

Albizia procera, Degraded Soil, Fertilizers, Nitroen Dose, Phosphorus Dose.

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S. D. Sonkar ¹, S. P. Tripathi ¹, K. Singh ¹, K. S. Negi ¹

Affiliations
1 Silviculture and Joint Forest Management Division, Tropical Forest Research Institute, Mandla Road, Jabalpur-482 021, M.P, IN

Abstract

The present study was conducted on the performance and relative suitability of 14 different tree species planted on degraded sites in the premises of Tropical Forest Research Institute, Jabalpur (M.P.). The survival and growth observations recorded after 14½ years of planting showed that Albizia procera as the most suitable species with highest relative score. On the basis of relative suitability indices, plants were grouped into four categories. Species scoring highest number (75-100) were categorized under most suitable, while those with indices below 45 were considered not suitable for planting in these types of degraded soil.Albizia procera, Cassia siamea, Dalbergia latifolia, Dalberia sissoo and Tectona grandis were found to be most suitable. Azadirachta indica, Albizia lebbeck, Dendrocalamus stricus, Emblica officinalis, Pongamia pinnata and Sterculia urens were suitable, while Acacia catechu was less suitable and Acacia benthamii was unsuitable.

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