Ecology, Environment and Conservation Paper

Vol. 21 Suppl.Issue August 2015; Page No.(341-349)

ASSESSMENT-BIOLOGICAL HEALTH STATUS OF THE CULTIVATED LANDS OF MIRZAPUR DISTRICT OF UTTAR PRADESH

Ajeet Kumar, J. Yadav and Awtar Singh

Abstract

To improve the sustainability and environmental accountability of soil there is a need to develop a set of soil health indicators that integrate physical, chemical and biological soil properties. The soils of Vindhyan Zone of Mirzapur district was selected for the study. 30 surface soil (0-15cm) samples were collected from the cultivated land and analysed for pH, EC, available N, P, K content and biological health status of soil. All the soil samples having the low organic carbon status. The availability of nitrogen vary from 125 to 276 kg ha-1, phosphorus ranges from 14.4 to 51.1 kg ha-1, while range of potassium vary between 75.8 to 586 kg ha-1. The Dehydrogenase activity of soil vary from 24.0-58.33 μg TPF g-1 soil day-1, urease activity of soil vary from 93.6 to 284.3 μg urea hydrolysed g-1 soil h-1, alkaline phosphatase activity vary from 84.3 to 245.67 μg PNP g-1 soil h-1, whereas acid phosphatase activity from 76.3 to 163.6 μg PNP g-1 soil h-1. Soil microbial biomass carbon (SMBC) and soil respiration values of the soils vary from 104.6 to 260.0 mg C kg-1 soil and 0.1879 to 0.4562 mg CO2-C g-1 soil day-1 respectively. Microbial population of bacteria, fungi and actinomycetes in the soils vary from 14.0 to 40.30 x 106 CFU g-1 soil, 6.7 to 29.3 x 104 CFU g-1 soil and 9.3 to 26.7 x 105 CFU g-1 soil respectively.

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