Vol. 4 (4) : July-August 2013 issue
Green Farming Vol. 4 (4) : 452-454 (July-August, 2013)
Distribution of DTPA extractable micronutrients in soils of Northern Telangana region of Andhra Pradesh
M. RAM PRASAD1* and V. GOVERDHAN2
Department of Soil Science and Agricultural Chemistry, College of Agriculture, Rajendranagar, Acharya N.G. Ranga Agricultural University, Hyderabad - 500 030 (Andhra Pradesh)
Designation : 1Ph.D. Scholar *(mullapudiramprasad@yahoo.co.in), 2Associate Dean
Subject : Soil Science & Agric. Chemistry; Soil Health & Soil Conservation Engg.
Paper No. : P-0779
Total Pages : 3
Received : 02 March 2013
Revised accepted : 15 July 2013
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Citation :
M. RAM PRASAD and V. GOVERDHAN. 2013. Distribution of DTPA extractable micronutrients in soils of Northern Telangana region of Andhra Pradesh. Green Farming Vol. 4 (4) : 452-454 ; July-August, 2013
ABSTRACT
Forty seven soil samples from ten pedons of northern Telangana region, Andhra Pradesh were studied for vertical distribution of DTPA extractable. Zn, Cu, Fe and Mn and their relationship with some soil properties. Soil pH, calcium carbonate, organic carbon and particle-size fractions had strong influence on the distribution of these micronutrients. The content of micronutrient increased with the increase in organic carbon and decreased with increase in pH and CaCO3. There was a decreasing trend for the distribution of these micronutrients with respect to depth. As per critical limit prescribed for Zn and Fe, 66 and 11 per cent of the soil could be rated as deficient in available zinc and iron respectively. Copper and manganese were found to be adequate.
Key words :
Alkaline soil, Critical limit, DTPA extractable micronutrients, Soil horizons.
