• Korean Journal of Weed Science
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• v.2 no.2
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• pp.160-168
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• 1982

Nine combined dosal levels of Paraquat and Oxyfluorfen were compared on pear orchard to control Digitaria adscendens Henr, and others, namely Commelina communis L., Erigeron annuus L., Echinochloa crusgalli P. Beauv var. oryzicola Ohwi, etc.. By treating as an early-postemergence, the mixtures showed higher control effects than 85% of the whole weeds, but the control effects in the mono-treatments of respective herbicide were only 20% or so. On the other hand, as a late-postemergence, the control rates were fluctuated from 31% to 94%. However, there was no significant difference in Spearman's rank correlation coefficients between both efficacies. Thus indicate that the action style of synergistic effect was not influenced by the application time, and the levels of mixtured dosages should be adjusted by the application times and interfering conditions.

• Korean journal of applied entomology
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• v.62 no.3
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• pp.193-205
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• 2023

Botanical insecticides derived from plant extracts exhibit repellent, antifeedant and enzyme-inhibiting activities against insect pests. Among such pests, phytophagous mites are major threats to horticultural crops. Botanical extracts derived from neem, chrysanthemum, and shrubby sophora are employed as field acaricides. These botanical extracts have low toxicities against natural enemies of the insect pests and, thus, are valuable in pest management. This review focuses on the potential for botanical extracts in the controls of mites, with comparisons of the spectrum of activity, the lethal dose and times and their mode of action. This information will enable better formulation of botanical extracts in integrated mite control.

• Korean journal of applied entomology
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• v.33 no.1
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• pp.1-5
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• 1994

These studies were to observe the pentatomid species of chrysanthemum, and to investigate the h host range of Nysius plebejus DIstant and its control The five pentatomid species of four families w were observed In Chinju and Masan areas. Dominant species was Nysius plebejus DIstant with 80.6% occufied. The host plants of N. plebejus were 20 species in chrysanthemum fields. And major hosts were chrysanthemum morifalium, Lolium multiflorum, Erigeron linifolius and Fragana chiloensls. All the cultivars of C. monfoIium were infested and severely damaged by N. plebeius Appropnate control of N. plebejus was 3~4 applications of the effective insecticides at 10-day intervals from early August.

• Research in Plant Disease
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• v.8 no.4
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• pp.254-257
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• 2002

It was conducted to investigate an effective control measure of the black necrotic leaf spot disease on pear, The disease commonly occurred in major cultivation areas of Korea revealed 5.6 ％ infection rate on the widely growing cultivar Niikata. The disease substantially reduced yield and quality of pear fruits, however, it has never been controlled by chemicals. Renewal of the pear trees to resistant cultivar was found to be the most effective to control the disease. As a result, the disease did not developed for 2 years on the diseased Niikata that was top-grafted with resistant cultivars Soowhang and Whasan. lop-grafting with resistant cultivars was recommended far the pear trees showing over 80％ infection rate and lower than 70% fruit yield compare to standard production.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.5 no.6
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• pp.15-22
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• 1984

6월은 1년중 가장 바쁜 시기이며 안전다수확의 기틀을 마련하는 달이다. 1모작지대는 병충해방제 $\cdot$잡초약뿌리기$\cdot$물관리 $\cdot$옷거름주기 등을 하여야 하고 2모작지대는 보리베기와 모내기가 겹쳐 잠시라도 뒤돌아 볼 겨를도 없기 때문이다. 그러나 우리는 바쁠수록 계획적인 일손 배분으로 모든 농작업을 제때에 실천함으로서 벼 생육을 좋게 하여 안전다수확을 기하여야 한다.

• Proceedings of the Korean Society of Crop Science Conference
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• 2005.10b
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• pp.186-187
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• 2005

• Proceedings of the Korean Society of Crop Science Conference
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• 2017.10a
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• pp.192-192
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• 2017

• Landscaping Tree
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• s.98
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• pp.21-25
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• 2007

6월의 안개 두른 먼산은 더 높아 보이고, 눈앞의 장송도 훌쩍 커 보이며, 비에 젖은 잎사귀는 더욱 짙푸려 보이면 여름의 시작을 알리는 소나무들이 신초를 자랑스럽게 내밀고는 온몸에 바늘 같은 잎을 간직한 채 새로운 한해를 시작하는 것을 볼 수 있다. 이때 어김없이 해충들은 이들의 신비함을 시기나 하는 듯 무참하게 신초를 노랗게 말라 죽게 하는 벌레들이 있다. 이들에 대한 종류와 생태 및 방제에 대하여 알아보고자 한다.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.6 no.3
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• pp.70-80
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• 1985

우리나라에서의 수도작은 후기등숙이 불량해지기 쉬우므로 못자리기간을 앞당기므로서 저온기의 보온육묘가 필연적으로 수행되어야 하는 특성을 지니고 있다. 보온육묘는 자연상태에서 육묘가 불가능한 시기에 인공가온으로 묘의 생장을 시키게 되므로 보온상내 환경이 외기환경과 차이가 크므로 세심한 관리를 해야한다.

• Korean journal of applied entomology
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• v.57 no.3
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• pp.233-233
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• 2018