Velmurugan Meena

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The social organization of Asiatic lions (Panthera leo persica) differs from African lions (P. l. leo) in that breeding lionesses defend resource based territories while male coalitions maximize coverage of female groups. Thus, lion density in the Gir forests of India is dictated by female territory size. We studied the home range and habitat preference of(More)
Rhizosphere is a vital region of plant ecosystem; ~2 mm from the root surface is termed as rhizosphere zone. It governs the chemistry of plant nutrient and affects growth of the plants. Nutrient requirement in agriculture has been rising and is likely to increase further to enhance the agriculture productivity across the globe in order to keep pace with(More)
Long period of intensive crop cultivation deplete the available soil silicon (Si). Depletion of available Si in the soil could be one of the possible limiting factors amongst others contributing to declining yields. The lower values for Si in the soil can be justified due to (i) severe and frequent soil erosion and sediment transportation. (ii) Usually(More)
The tannery effluents contain a high concentration of chromium (Cr). It drastically reduces the crop yield when used for irrigation purpose. A huge volume of tannery effluents is available as irrigation for crop production. It is negatively affecting germination as well as yield of the crop. The wheat seeds were exposed to five different concentrations of(More)
A field experiment was conducted during rabi season of 2009–2010 to find out the suitable date of sowing and weed control systems for getting maximum chickpea grain yield, at the Agricultural Research Farm of the Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, UP. The treatments consisted of three dates of sowing viz. November 10(More)
Chromium (Cr) contamination may affect different biochemical process in the soil. In a laboratory experiment, graded doses of hexavalent chromium were applied to a clay loam soil to investigate the impact on carbon (C) mineralization rate and the enzymatic activities at various time intervals. The maximum reduction in C mineralization was noticed at 100(More)
In this paper, mathematical models of immobilized enzyme system that follow the Michaelis-Menten mechanism for both reversible and irreversible reactions are discussed. This model is based on the diffusion equations containing the nonlinear term related to Michaelis-Menten kinetics. An approximate analytical technique employing the modified Adomian(More)
Soil and groundwater from long-term (>50 years) tannery effluent irrigated areas of Kanpur were analyzed and significant buildup of heavy metals such as Cr, Ni, Cd, Pb, Zn, and As in the range of 252-972, 23-30, 2.3-14.1, 23.7-58.8, 138-338 and 6.8-11 mg kg-1, respectively in soil was found. Few groundwater samples in the effluent irrigated areas also(More)
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