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  1. Kerala Agricultural University Digital Library
  2. 1. KAUTIR (Kerala Agricultural University Theses Information and Retrieval)
  3. PG Thesis
a
Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/6205
Title: Possibilities of using unsymmetrlcal dimethyl urea as Urease/Nltrlflcatlon inhibitor for Increasing the efficiency of nitrogenous fertilizers
Authors: Asha Varughese
Keywords: Losses and recovery of applied nitrogen
Possibilities for increasing M-use efficiency
Mineralisation of urea
Inhibition of Nitrification
Fertilizers
Chemical Studies
Issue Date: 1988
Publisher: Department of soil science and agricultural chemistry, College of Agriculture, Vellayani
Citation: CoAV TH-462
Abstract: An Investigation was carried out at the College of Agriculture, Vellayanl, during the first crop season of 1987 to study the efficacy of the use of unsymmetrical dimethyl urea (UDMU) and neemcake (NC) In various combinations as urease/nitrification inhibitors for increasing the nitrogen use efficiency in wetland rice soils of Kerala. The initial analysis of the basic physico-chemical properties of the soil from the experimental site was done. UDMU was applied along with urea as mixed and in the coated form. Two levels of UDMU. via, 1/10th and 1/5th of the quantity of area were used for study. Neemcake was added at the rata of 40 kg/ha. Soil samples were withdrawn periodically from the experimental plots and analysed to the laboratory for estimating urea N, NH4 No2-N and contents in order to study tbs rate of mineralisation of urea. The experiment was carried out in a simple randomised block design with ten treatments and three replications
URI: http://hdl.handle.net/123456789/6205
Appears in Collections:PG Thesis

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