R. B. Singh , H. Prasad , Akhilesh Argal

Abstract

The spatial variability of soil properties and phytosociological study under different age series plantations of T. grandis at Balaghat (M.P.) was studied. The effect of trees on soil pH and organic carbon is promient under older plantations. Site I (1936) and site II (1948) exhibited better soil properties than site III and IV. Variability of soil pH and org. C in perpendicular transects (N-S and E-W) showed more variations and heterogeneity at site I and site III. Directional variations do not show any definite pattern. Effect of individual tree on soil pH was significant at site II and III but it decrease with distance from main stem , while organic carbon exhibited a significant decrease at site I. Site I and II showed over all more heterogeneity followed by other sites. Phytosociological parameters. Like IVI and coefficient of dominance were higher at site I as compared to other sites. Diversity index value (H) and number of tree soecies were maximum at site II. Species diversity was directly related with soil heterogeneity.

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Shamila Kalia , R. B. Singh , Naina Joshi

Abstract

No abstract

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R. B. Singh , H. N. Hymavathi

Abstract

The field experiment on Agri-Silviculture agroforestry system with three plant geometries and two intercrop spacing (60 cm and 120 cm) tree to crop line was conducted in the on-station research farm at Tropical Forest Research Institute, Jabalpur (M.P.) during 2008-2009. Soil properties and growth parameters of Dalbergia sissoo with intercrop of Zea mays were evaluated. The soil pH was found slightly alkaline and Electrical Conductivity (E.C.) value showed noticeable increase. The organic carbon, available nutrients (Nitrogen and Potassium) and exchangeable cations (Magnesiumand Calcium) were found medium where available phosphorus found very low in all spacing. The growth parameter of Dalbergia sissoo shows a regular increase both in height and collar diameter along with maize crop in all the spacings. The maximum increase in height (22.56 cm) and collar diameter (0.628 cm) wadobserved in spacing 6m × 6m and 60cm crop line spacing with regard to initial height and collar diameter. The tree distance of 5m × 5m with 60cm crop line spacing produced maximum yield of maize crop in Dalbergia sissoo-Zea mays (Agri-Silvi) agroforestry system. This Dalbergia sissoo-Zea mays (Agri-Silvi) agroforestry system can be suggested for improving the soil fertility and conserving soil moisture content thereby enhancing the soil productivity along with growth of tree species.

Keywords

Spacing, Dalbergia sissoo, Maize, Sustainability, Integrated, Agri-Silviculture System

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A. K. Singh , A. J. Williams , R. B. Singh , S. K. Banerjee

Abstract

The effect of different combinations of Soil and Compost as well as different sources of nitrogen on growth of Albizia procera in coal mine overburden ofTalcher, Orissa was studied. Results obtained indicated that, for different nitrogenous fertilizers applied @ 150 ppm with basal dose of 25 ppm P₂0₅ and 100 ppm K₂0 Albizia procera showed better response to ammonium sulphate as compared to control. However, number of nodules was maximum in ammonium chloride treated sample, while ischolar_main was longest in control. In another experiment, best growth performance of the species was recorded in treatment receiving 1 : 2 soil-compost mixture (v/v) followed by 1 : 1 and 1 : 0.5 soil-compost mixture and control.

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