• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.3 no.6
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• pp.34-44
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• 1982

1970년대 초부터 본격적으로 도입되기 시작하여 1974년 이래 급속한 사용증가를 기록한 우리나라의 벼농사용 제초제는 1980년을 최고로 95$\%$ 이상의 농가에 의해 매년 사용되고 있다. 1982년 5월 현재 정부에 의해 논잡초약으로 고시된 제초제의 종류는 14종 17게 품목이고 이들중 8종 10개 품목은 일년생 잡초약 그리고 6종 7개품목은 소위 다년생 잡초약으로 분류되고 있다. 그동안 벼의 소출에 직접 영향을 주는 살충제나 살균제의 중요성에 비추어 제초제는 상대적으로 그 중요성이 비교적 경시(輕視)되어 온 것이 사실이다. 그러나 1980년 이후 일반농가는 물론 정부의 제초제에 대한 관심이 두드러지게 높아져서 여러 가지 논의가 되고 다각도에서 심각한 검토가 이루어지고 있는 것이 현실이다. 이 기회에 필자가 평소에 생각해온 문제의 핵심과 그 대책을 기술함으로써 효과적인 잡초방제에 일조(一助)가 되기를 바란다.

• The Korean Journal of Pesticide Science
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• v.4 no.3
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• pp.89-92
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• 2000

A series of 5-(2-metllyl-2-alkylindallyl)cyclohexane-1,3-diones were synthesized and evaluated for herbicidal activities in a green house. Under submerged paddy conditions, those compounds showed high herbicidal activity against barnyardgrass with good tolerance on rice.

• Agrochemical news magazine
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• v.22 no.8 s.171
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• pp.10-13
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• 2001

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1998.12a
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• pp.69-75
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• 1998

• Life and Agrochemicals
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• s.249
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• pp.44-45
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• 2009

도깨비가지는 종자 뿐만 아니라 뿌리의 번식력이 왕성하여 방제가 어려운 문제 잡초이다. 종자발아를 억제시키는 토양처리형 제초제와 뿌리까지 방제할 수 있는 경엽처리형 제초제로 방제한다.

• Life and Agrochemicals
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• s.262
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• pp.18-21
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• 2010

저항성 잡초의 발생 및 조기 확산을 방지하기 위한 재배방법이나 제초제 사용요령 등의 지속적으로 교육 홍보가 필요하며, 모니터링과 저항성 발현기작 연구 등을 통해 올바른 진단이 이루어질 수 있도록 정부는 조속히 대책을 수립해야 한다.

• Applied Biological Chemistry
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• v.36 no.5
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• pp.381-386
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• 1993

New twenty five Imazethapyr derivatives, [2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin -2-yl)-3-(N-methyl-N-X(sub.)-phenylaminooxoacetyl)-5-methylpyridine] were synthesized. and The quantitative structure activity relationships (QSARs) between their post-emergence herbicidal activity$(pI_{50})$ values in vivo against Barnyard grass (Echinochloa crus-galli) and physicochemical parameters of substituents(X) of 3-(N-methyl-N-X(sub.)-phenylaminooxoacetyl) group have been studied. From the basis on the findings, in case of post-emergence, the activities were dependent on the steric constant$(E_s<0)$ and electron donating $(\sigma<0)$ effect by subsitituents(X) of 3-(N-methyl-N-X(sub.)phenylaminooxoacetyl) group. Therefore, The most effective compound,15 (4-t-butyl group) and 20 (3,5-dimethyl group) were examined in this study. And the conditions on the compounds predicted to show higher herbicidal activity were also discussed.

• Korean Journal of Soil Science and Fertilizer
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• v.13 no.1
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• pp.45-51
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• 1980

The effects of propanil, MCPA; 2, 4 5-T and silvex on the numder of new root and tiller on Taichung Native 1, Caloro, PI 245717 and Bluebonnet 50 by root administration and foliar spray at 10 levels of concentration were investigated. Phenoxy herbicides changed the growth pottern in the way of increased number of tillers and new roots rather than plant height or root length. It was suggested that MCPA is only possible to increase tillering around applicable range. Silvex stimulated tillering at higher level than that required to stimulate new root formation. Varietal response on herbicides were different along with herbicide feeding part. There was trends that the higher nitrogen response varieties also have a greater response to stimulating effect of herbicide. Propanil had no effect on growth and no injury even about 20 times of higher concentration of phenoxy herbicide.

• Applied Biological Chemistry
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• v.37 no.6
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• pp.516-521
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• 1994

New seventeen imazapyr derivatives, 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-3-(N-methyl-N-X(sub.)-phenylaminooxoacetyl)pyridine, 6 were synthesized and their pre-emergence herbicidal activity$(pI_{50})$ in vivo against Corn (Zea mays L.) and Pigweed (Amaranthus viridis L.) were studied by the pot test under paddly conditions. Quantitative structure activity relationships (QSARs) were analyzed using the physicochemical parameters of substituent(X) on the phenyl ring of 3-(N-methyl-N-X(sub.)-phenylaminooxoacetyl) group and regression analysis. The herbicidal activities were related to the steric effect of X-substituent. The effect was rationalized by paraholic function of MR and $L_1$, where the optimal values were MR=5.56 (Zea mays L.) and $L_1=3.34\;{{\AA}}$ (Amaranthus viridis L.). Among them, 2,5-difluoro substituted compound, 6i showed good herbicidal activity against Pigweed with excellent tolerance to Corn.

• Applied Biological Chemistry
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• v.51 no.3
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• pp.219-222
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• 2008

In the search for third generation herbicidal cyclic imide derivatives, the average values of herbicidal activity ($pI_{50}$) in vivo (pre-emergence) of 40 new peroxidizing herbicides, 1-(4-chloro-2-fluoro-5-propargyloxyphenyl)thiourea derivatives (1-40) against rice plant (Orysa sativa) and barnyard grass (Echinochlor crus-galli) were studied. The molecular similarity between protoporphyrinogen IX (protogen) as the substrate of protox enzyme and Urea derivatives (1-40) was discussed quantitatively. The diallyl (20) and 3-nitro substituent (33) showed the selective herbicidal activity against barnyard grass. Allyl substituent (8) and their molecular similarity in dice (S=0.81) showed the highest levels of herbicidal activity ($pI_{50}$=4.71). Also, similarity indices (S) and superimposed volume (C) of protogen and aryl-substituents (21-40) showed good correlation.