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

Abstract

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 , Arun Prasad , K. S. Kapoor , P. K. Khatri , J. S. Chauhan , V. K. Dahia

Abstract

An poly-pot experiment was conducted in factorial R.B.D. design with 4 replications to study the effect of nitrogen and phospborus on the growth and yield of bamboo seedlings. Application of nitrogen @ 5.0 gm and 10.0 gm of urea/pot containing 2 kg soil individually as well as in combination with single superphosphate significantly decreased all growth parameters and dry matter yield. However, phosphorus application @ 10.0 gm and 20.0 gm single superphosphate/ pot individually as well as in combination with nitrogen increased the height of plant, length of rhizome and dry matter yield. The correlation coefficients between some growth factors were calculated and were found highly significant. The results of this experiment suggest that with 'P' application better growth of bamboo seedlings may be obtained in short duration and healthy plantation stock could be made available.

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

Abstract

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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A. K. Singh , Arun Prasad , Balvinder Singh

Abstract

A vailable P has a low status in the soils or Pali range (Shahdol) while status or available K is medium to high. Available P and K have a positive correlation with all the factors like clay, pH, CaCO₃, organic matter and catipn exchange capacity in the soil developed over Deccan trap. While it has a negative correlation with all the above factors except organic over in the soil developed over lametas (Calcareous). In the soils developed over Gondwans sand stone, available P and K show mixed rotationship. It shows negative correlations with some factors like clay, pH, calcium carbonate etc. and positive correlation with others like organic matter and in some profiles clay C E.C etc. Hence there is a need to study to investigate responses to P application for enhancing forest productivity.

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