Jamaluddin V. S. Dadwal , J. S. Chouhan

Abstract

The efficacy of pure culture of Rhizobium strains of different forest tree species viz. Dalbergia sissoo, Leucaena leucocephala, Pongamia pinnata and Albizia lebbek was tested on the growth of Albizia lebbek seedlings. The experiment was conducted in the nursery upto 3 months. It was noticed that the shoot length, girth of seedlings, number of nodules, fresh and dry weight and nitrogen content of Albizia lebbek seedlings increased to a considerable extent upon incoculation with the Rhizobium strain isolated from Albizia lebbek than with Rhizobium strains of other legume species. This indicated that Rhizobium is selective for the host.

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Arun Prasad , N. G. Totey , K. S. Kapoor , P. K. Khatri , J. S. Chouhan , A. K. Bhowmik

Abstract

A pot experiment as conducted to study the effect of some salts on the soli reaction and the growth and dry matter yield of Leucaena leucocephala and Acacia auriculiformis. Addition of FeSO₄ slightly decreased the soil pH whereas CaCO₃ and Na₂CO₃ increased it. Application of FeSO₄ decreased the plant height. In case of Leucaena leucocephala more at earlier stage whereas it increased the height of Acacia auriculiformis. Addition of CaCo₃, decreased the height of both the species. The application of CaCO₃, along with Na₂CO₃ had seriously affected the growth and survival of these two species.The dry matter yield of both the species was enhanced with the addition of FeSO₄. The application of CaCO₃ @ 10g/kg soil, increased the dry matter yield of Leucaena leucocephala whereas the yield of Acacia auriculiformis remained alomost unaffected. Further increase in the level of CaCO₃ applied alone or with Na₂CO₃ reduced the dry matter yield of both the species. Added FeSO₄ and CaCO₃ at lower dose, increased the dry weight of ischolar_main nodules and further increase in the level of CaCO₃ decreased the nodule weight.

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N. G. Totey , A. K. Bhowmik , P. K. Khatri , J. S. Chouhan , R. Kulkarni

Abstract

A Pilot experiment was conducted to know the effect of N P K on the growth of teak seedlings in nursery stage. Due to high fertility status of nursery beds, fertilizer treatments were not significant. However, data revealed that teak seedlings may become of transplantable size within 4 months duration. A four month old teak seedling produced shoot and ischolar_main of about 116.72 gm and 42.33 gm respectively. Shoot height of this seedling was 41.84 cm while as ischolar_main length was 48.13 cm. Girth size at collar was 4.75 cm. This is possible by maintaining adequate fertility status by incorporating F.Y.M., inorganic and organic fertilizers. There is no need of adding growth hormones. Shoot/Root ratios of fresh weight and also of length of teak seedlings tended to approach one in September and October (Sixth and Seventh month after sowing) in heavy textured soil.

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