本實驗은 浸透性殺蟲劑 Fussol Dimethoate, Metasystox 및 Dimecron을 벼, 보리 및 콩씨에 粉衣處理하였을 때 發芽에 미치는 影響과 殺蟲效果 및 그의 持續性을 알기 위해 實施하여 아래와 같은 結果를 얻었다. 1). 볍씨는 Fussol處理에서 發芽力을 完全히 잃었으며 Dimethoate處理에서는 處理後 播種時까지 時間이 經過함에 따라 發芽率이 크게 低下되었으나 Metasystox와 Dimecron 處理에서는 發芽沮害가 비교적적었다. 2) 보리씨는 Fussol處理에서 處理後 1日播種에서는 비교적 發芽率이 높았으나 25日 播種에서는 發芽力이 완전히 상실되었다. 그 밖에 供試藥劑도 無處理에 비하여 약간의 發芽沮害가 있었으나 貯藏期間이 지나도 별로 發芽力이 低下되지 않았다. 3) 콩씨에서는 處理後 1日 播種에서 供試藥劑 모두 비교적 좋은 發芽率을 보였으나 Fussol, Dimethoate 및 Metasystox는 處理後 25日 播種에서 發芽에 沮害가 컸고 Dimecron 處理에서는 發芽沮害가 비교적 적었다. 4) 볍씨處理에서 Dimethoate는 播種後 20日까지 끝동매미충에 對하여 殺蟲力이 좋았으나 30日 에서의 殺蟲力은 낮았다. 그 밖에 藥劑處理에서는 殺蟲力이 모두 낮았다. 5) 보리씨處理에서 Dimethoate는 옥수수테두리진딧물에 對하여 比較的 殺蟲效果가 좋았으나 다른 藥劑處理效果는 낮았다. 株當 平均 ?卵數는 無處理 13個에 對하여 Dimethoate 2個, Fussol 4個, Metasystox 6個, Dimecron 7個이었다. 6) 콩씨處理에서는 播種後 9日까지 供試藥劑 모두 좋은 殺蟲效果를 나타내었으며 18日 調査에서는 Dimethoate, Metasystox 및 Dimecron에서 비교적 좋은 殺蟲效果를 보였으나 Fussol만은 殺蟲力이 無處理와 差異가 없었다. 7) 浸透性殺蟲劑의 粉衣處理에 있어서 發芽沮害와 殺蟲力 및 그의 持續期間은 藥劑의 種類, 種子의 種類, 處理後 播種時까지의 經過日數에 따라 큰 差異가 있는 것으로 본다.
An experiment was carried out to investigate possible use of several systemic insecticides as seed treatment to control some insect pests of rice, barley and soybean. The insecticides were impregnated with active carbon dust and 2% water solution of methyl cellulose as skicker. The seeds were dressed with the insecticides : Fussol(Monofluoroacetamide), Dimethoate(0,0-dimethyl-S-(N-methyl carbamoylmethyl) phosphorodithioate), Metasystox(0,0-dimethyl 0-2 ethylthioethyl phosphorodithioate), Dimecron (0,0-dimethyl (diethylamido-1-chlorocrotonyl) phosphate). The seeds were treated at the rate of 4% by grain weight. Effects of seed treatments with systemic insecticides on the seed germination and insecticidal effectiveness were tested. For rice, no seed germination was observed in Fussol treatment. Dimethoate, Metasystox and Dimecron showed a slight reduction in germination when seeds were sown 1 day after treatment, but they showed gradual reduction in germination when seeds were sown 20 and 45 days after treatment. Especially Dimethoate treatment showed significant reduction in germination after 20 and 45 days of storage. All the insecticides reduced seedling stands of barley somewhat. No plant emergence was observed in Fussol treatments after 25 and 40 days of storage. In case of the 40 days of storge in barley seed treated with Dimethoate, Metasystox and Dimecron there was no gignificant reduction in plant emergence except Fussol treatment. Dimethoate was highly toxic to the soybean seed viability. However, there was no significant reduction in the soybean germination after 1 day of storage. in Fussol, Metasystox and Dimecron treatments After 25 days of storage in Fussol and Dimethoate treatments, no plant emergence was observed, and there was 13,3% emergence in Metasystox treatment, and 93.0% emergence in Dimecron treatment. Dimethoate treatment in rice seed(variety Suwon #82) showed 90% mortality at the twentieth day and 33.3% at the thirtieth day after sowing against the green rice leafhopper, Nephotettix cincticeps. But no visible effectiveness was observed in Metasystox and Dimecron treatments. Dimethoate treatment in barley seed resulted in low population density of aphids. Rhopalosiphum spp. Final observation on the number of eggs per plant was made at the fiftieth day after sowing ; 2 in Dimethoate, 4 in Fussol, 6 in Metasystox, 7 in Dimecron, and 13 in check plots. All the insecticides tested resulted in good insecticidal effectiveness against the aphids, Aulocorthum solani on soybean plant at the ninth day infestation after sowing. Dimethote, Metasystox, and Dimecron treated soybean plants was still effective in controlling the aphids to the eighteenth day infestation.