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김창호,오명희,강정룡 公州大學校 資源科學硏究所 1998 資源科學硏究論文集 Vol.6 No.-
The experiment was conducted to investigate weeds control by several herbicides on tobacco growing fields and barren tobacco growing fields. In those fields, the dominant species weed were Digitaria sanguinalid Scop., the second were Cyperus americus Max. in tobacco growing fields, and Persicaria hydropiper (L) Spach in barren tobacco growing fields. In tobacco growing fields, 100% of Digitaria sanguinalid Scop., 96% of Setaria viridis(L) Beauv and Echinochloa crus-galli P. Beauv were controled by pendimethain (N-(1-ethylpropyl)2,6-dinitro-3,4-xylidine) at 5kg (5%)/ 10a application,respectively. Broad-leaves weeds n tobacco growing fields were controled 93% by Napropamide [(RS)-N,N-diethy-2-(1-naphthyloxy) propionamide] at300g(50%)/10a, pendimethain(N-(1-ethylpropyl)2,6-dinitro-3,4-xylidine)+Glufosinate[Ammonium4-[hydroxy(methyl)phosphinoyl]-ammonium-DL-homoalanine] at 5kg (5%)/10a or 300ml(31.7%)+300mi (1.8%)/10a. In case of barren tobacco growing fields, pendimethain gave an excellent weeds control any other herbicides application. Tobacco plants were uninjured by the herbicide treatments and yields was 5-6% higher from treated than untreated tobacco. Hand weeding took 24.0 hours per 10a in tobacco growing fields but 20.6 hours in barren tobacco growing fields. And then, herbicidal weeds control took 2.7 hours per 10a. in each tobacco growing fields. Expenses of hand weeding were 72,000 won/ 10a at tobacco growing fields, and 61,800 won/10a at barren tobacco growing fields. But expenses of herbicides control were 8,100 won/10a at both tobacco growing fields.
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