Informatics Publishing Limited

Charan Singh , N. K. Sharma , M. K. Vishwanatham , P. Joshie , S. C. Mohan

Abstract

The present study was carried out under bouldery riverbed lands to study the effect of depth of holes on biomass production and distribution pattern in Grewia optiva. The study indicated that the shallower soil working (50 cm deep) has better rcsponse on total biomass production as compared to deeper soil working (75 and 100 cm). It was recorded that about 1.91 kg leaves and 5.66 kg twigs/tree (average of 4th to 9th year old plantation), can be obtained every year. Among twigs of different categories, the highest quantity was contributed by the twigs of2-5 cm diameter. It was also observed that under degraded lands the biomass production started declining at the early age of rotation.

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S. P. Banerjee , S. C. Mohan

Abstract

The study was conducted to determine the characteristics of termite-Roils in relation to the soils of the surrounding and to know whether the termite-soils originate from the top soil or the subsoil. The termite-soils are characterized by higher proportion of finer fractions-clay and silt, higher organic matter and total nitrogen, better water holding capacity, higher base status, exchange capacity, p^H, and total CaO and MgO as compared to the surrounding soils. Quantitatively total K₂O is considerably lower than the surrounding top soils as well as subsoils, and total P₂O₅ is at par with the subsoil but higher than the top soil. The available traction or K₂0 is almost equal in the inner mass of the termite- soil and the subsoil but higher than the outer crust and the top soil.

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