Mimosa pudica (미모사), Argemone mexicana (멕시코 가시양귀비) Leucus aspara (꿀풀과 일종), Polygonum hydropiper (여뀌), Blumea lacera (국화과 일종) 등 5종의 식물 헥산추출물들의 팥바구미 성충에 대한 살충, 성충우화억제력 및 녹두 종실피해 방제력이 검증되었다. 그 결과, 밭바구미 성충 살충력은 35-69%이었으며, 녹두에 추출물을 처리한 후 성충우화 방제율은 33-63%, 종실 피해 방제율은 13-49%이었다. 추출물의 농도가 증가할수록 살충력, 성충우화 및 종실피해 방제율 등이 증가하는 것으로 나타났다. 이와 같이 5종의 식물 헥산추출물들은 밭바구미 친환경 방제제로 이용가능성이 있을 것으로 판단된다.

The true bug genus Paromius from Korea is revised taxonomically. It comprises the following three species: P. exiguus (Distant, 1883), P. jejunus (Distant, 1883) and P. gracilis (Rambur, 1839). Among them, P. jejunus (Distant, 1883) is recorded for the first time in Korea. The pest bug injurious to rice culture, known as P. exiguus (Distant,1883), has been recorded erroneously by the previous authors from Korea due to the misidentification, which is rectified here with the support of morphological evidence. All the species of this genus are classified with proper redescriptions, and an identification key to species is provided with illustrations.

Thermal death kinetics was examined to develop a heat treatment method to control the Pine wood nematode, Bursaphelenchus xylophilus, in wood packing materials for export goods. To determine the feasibility of microwave irradiation as an alternative treatment, we performed laboratory experiments on the blocks (200x200x250mm) of Douglas-fir artificially infested with live adults with subsequent 2.45GHz microwave energy irradiation. The 100% mortality of treated Pine wood nematode was achieved above 64℃ of the measured wood temperature, regardless of irradiated time. All measurement points in the blocks reached 64℃ within 84-312 seconds with microwave irradiation by wood weight. Likewise, the 100% mortality of nematodes were observed by hot water treatment on 62℃. We need further experimental verification, but commercial microwave (2.45GHz) treatment is a feasible alternative to conventional heat treatment to control Pine wood nematode on the wood packing materials for export goods.

Thermal death kinetics was examined to develop a heat treatment method to control the Alnus ambrosia beetle, Xylosandrus germanus, in wood packing materials for export goods. To determine the feasibility of microwave irradiation as an alternative treatment, we performed laboratory experiments on the blocks (200x200x250mm) of Douglas-fir artificially infested with live adults with subsequent 2.45GHz microwave energy irradiation. The 100% mortality of treated Alnus Ambrosia Beetle was achieved above 58℃ of the measured wood temperature, regardless of irradiated time. All measurement points in the blocks reached 58℃ within 84-312 seconds with microwave irradiation by wood weight. Likewise, the 100% mortality of breetles were observed by hot water treatment on 52℃. We need further experimental verification, but commercial microwave (2.45GHz) treatment is a feasible alternative to conventional heat treatment to control Alnus ambrosia beetle on the wood packing materials for export goods.

해충저항성 Bacillus thuringiensis (Bt) 벼의 비표적곤충인 벼물바구미(Lissorhoptrus oryzophilus)에 대한 성충 전용살충제 Clothianidin 액상수화제의 살충제 감수성 시험을 실시한 결과, 72시간-LC50은 0.245 ml/L(95% 신뢰한계는 0.195~0.307 ml/L)이었으며, Bt벼의 모본으로 대조로 사용한 낙동벼의 72시간-LC50은 0.257 ml/L(95% 신뢰한계는 0.199~0.331 ml/L)이었다. 72시간-LC50은 낙동벼에서 다소 높았지만, 해충저항성 Bt벼 72시간-LC50이 낙동벼의 95% 신뢰한계 내에 포함되어, 두 품종의 LC50값에 유의성이 없는 것으로 판단된다.

Three species of the genus Neolygus Knight - N. hakusanensis (Yasunaga, 1991), N. roseus (Yasunaga, 1991) and N. zhugei (Yasunaga, 1991) - are recognized for the first time in Korea. An identification key to the eleven Korean Neolygus species is presented. Some illustrations of male genitalic structures are also provided.