Effects of nitrogen containing herbicides, Asulam(methyl-(4-aminobenzenesulphonyl)-carbamate), dimetametryne (2-methyl-4-ethylamino-6-(1,2-dimethyl propylamino)-S-triazine) and linuron (3-(3,4-dichlorophenyl)-1-metoxy-1-methyl urea) at rates of 0.5, 2, 4 ㎎/100g soil on urease activity were studied in urea added and unadded soil by incubating at 25±1℃ for 80 days.
The enzyme activity was somewhat suppressed by asulam and dimetametryne in soils treated with urea. Unlike the above results, the enzyme activity in soil treated with linuron was kept higher as compared with that in soil treated with urea only.
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