N. Roychoudhury , K. C. Joshi , A. K. Bhowmik

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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 , Arun Prasad , K. S. Kapoor , S. Nautiyal , P. K. Khatri , A. K. Bhowmik

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A field experiment was conducted on eroded teak nursery soil of Nainpur (M.P.) to study the growth performance of some green manure leguminous crops and their residual effect on organic matter and available nutrients. The order of obtaining maximum dry matter yield/plant was Arahar> Chakora> Soybean> Urd> Moong> Sannhemp. The average number of nodules/plant was maximum in Moong and Sannhemp at the intervals of 30 days and in Soybean and Arahar at 60 days interval. Number of nodules in all the leguminous crops decreased as the crop approached to maturity. The green manuring added the organic matter in surface soil treated with moong, soybean and sannhemp and increased the availability of soil nitrogen and phosphorus in surface and sub-surface layers in all the treatments. No appreciable changes in available potassium has been noticed in surface soils but a significant decrease was observed in sub-surface layer in all the treatments over control.

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N. G. Totey , R. Kulkarni , A. K. Bhowmik , P. K. Khatri , V. K. Dahia , Arun Prasad

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Germination studies on the seeds of four forest tree species viz. Dendrocalamus Strictus (Bamboo) of Betul and Amarkantak origin, Emblica officinalis (Awala) and Acacia auriculiformis (Australian Babul) were performed in different artificially prepared saline water of 3, 6, 9, 12 and 18 mmhos/cm electrical conductivity adjusted in Hoagland solution 1 by incorporating neutral salt, NaCl. Tap water was the control whose Electrical conductivity was .56 mmhos/cm and fresh Hoagland solution contained 1.76 mmhos/cm E.C. Germination data were subjected to statistically analysis with 7 treatments and 8 replications in factorial design. Eamtoo may tolerate higher salt concentration. Bamboo of Amarkantak origin may prove to be better In high salinity conditions, however the same may be very detrimental for the germination of Awala. Australian Babul may not fair well in salt affected conditions.

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N. G. Totey , A. K. Bhowmik , P. K. Khatri

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Performance of Salon soils derived from sand stone, granite, trap with lateritic bricks, deccan trap and mottled nodular bed of limestone was studied in Shahdol Forest Division, M.P. According to phytosociological considerations Shorea robusta- Madhuca indica, Shorea robusta-Terminalia tomentosa, Terminalia tomentosa- Lagerstroemia parviflora and Terminalia communities were found on sand stone, trap with lateritic bricks, deccan trap and limestone respectively. Sal (Shorea robusta) had maximum frequency, density, basal area and also IVI on soils derived from sand stone and minimum on soils derived from limestone. This differential response of salon sand stone (and also granite) was explained on the basis of physico-chemical properties of the soils. Sal prefers soil low in pH (5.4 to 6.5), low in electrical conductivity (∠ 0.1 mmhos/cm), low in Exch. Ca (3 to 10 meq/lOO gm), low in Mg (1 to 4 meq/100 gm) and also low in C.E.C. (6 to 20 meq/l00 gm).

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

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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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N. G. Totey , A. K. Singh , A. K. Bhowmik , P. K. Khatri

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Physico-chemical properties of soils belonging to great group of Haplustali/Hapiustoli and developed from Gondwana land stone in similar physiographic and environmental conditions were studied under three forest covers Viz., miscellaneous cover, teak plantation and Eucalyptus cover in Kotma and Ghunghuti ranges of South Shahdol and North Shahdol Divisionl of M.P. respectively. Weathering processes seem to be quite active in soils under followed by Eucalyptus cover. Ratios of clay to non clay fractionl, thickness of 'A' horizon, per cent organic matter, cation exchange capacity, exchangeable Ca and Mg were more under teak cover than that of Eucalyptus. Soil pH lowered down more under Eucalyptus plantation than in teak plantation. Soluble salts were more under Eucalytus cover. Performance of Eucalyptus was better on Ghunghuti range where as teak was better on Kotma rangue Eucalyptus supports undergrowth of different tree species.

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