Use of urea coated with natural products to inhibit urea hydrolysis and nitrification in soil |
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Authors: | Dharani D. Patra Usha Kiran Sukhmal Chand Mohd. Anwar |
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Affiliation: | (1) Division of Agrotechnology, Central Institute of Medicinal and Aromatic Plants, Lucknow, India |
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Abstract: | Laboratory incubation experiments were conducted with uncoated urea or urea coated with dementholized oil (DMO), pitch (the mint oil discard), terpenes (the products of menthol mint oil), or dicyandiamide (DCD) to study the retardation of urea hydrolysis and nitrification in soil. Two levels (0.5 and 1 %) of coating were tested. Urea was applied at a rate of 200 mg kg−1 of dry weight of soil. The urea hydrolysis and nitrification processes were inhibited by all three natural products. All the three natural products viz., DMO, terpenes, and pitch significantly retarded urease activity of soil. |
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Keywords: | Essential oil Nitrification inhibitors Urease inhibitors Urea N |
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