Authors: Rekha Sodani1, Giriraj Gupta2, Maya Yadav3
1Department of Plant Physiology Banaras Hindu University, Varanasi 221005
2Dept of Agronomy, RCA, MPUAT, Udaipur
3Rajasthan Agriculture Research Institute, Jaipur
Introduction:
Soil pH: pH is defined as the negative logarithum of hydrogen ions activity of soil or soil reaction is an indication of acidity and alkalinity of soil and is measured in pH units. The pH scale goes from 0-14 with pH 7 as the neutral point. As the amount of H ions in the soil increase the soil pH decrease thus become more acidic. From 7 to 0 the soil is increasing more acidic and from pH 7-14 the soil is increase more alkaline and base.
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