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Journal of the Indian Society of Soil Science
Year : 1994, Volume : 42, Issue : 3
First page : ( 387) Last page : ( 392)
Print ISSN : 0019-638X.

Long Term Effects of Continuous Rotational Cropping and Fertilization on Crop Yields and Soil Properties - II. Effects on EC, pH, Organic Matter and Available Nutrients of Soil

Bharadwaj Venkatesh, Omanwar P.K.*

Department of Soil Science, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttar Pradesh, 263145.

* Deceased.

Received:  December,  1986; Accepted:  May,  1994.

Abstract

Continuous cropping with out fertilization leads to the depletion of organic matter, available N, P, K, Fe, Mn, Zn and Cu, whereas continuous fertilization had beneficial effect on organic matter and available N, P and K of the soil. A build up of available P and K in control plots showed a dynamism of these nutrients in soil. Depletions in DTPA extractable (available) Fe, Mn, Cu and Zn status of unfertilized as well as fertilized plots indicated these nutrients were utilized from soil to meet the requirements of crops.

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Keywords

Available nutrients, build up and depletion, continuous cropping, fertilization.

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