2015년부터 2016년까지 전북지역 오디 생산용 뽕나무에서 점박이응애(Tetranychus urticae Koch)와 명주달팽이(Acusta despecta Sowerby) 2종을 포함하여 총 33종의 해충이 조사되었다. 그 가운데 뽕나무총채벌레(Pseudodendrothrips mori Niwa)를 포함한 8종이 주요 해충 으로 분류되었다. 수확 전에는 총 25종이 조사되었는데, 그 가운데 뽕나무총채벌레(P. mori), 뽕나무이(Anomoneura mori Schwarz), 뽕나무깍지 벌레(Pseudaulacaspis pentagona Targioni Tozzetti), 뽕나무애바구미(Baris deplanata Roelofs), 뽕나무가지나방(Menophra atrilineata Butler), 점박이응애(Tetranychus urticae Koch) 6종이 주요 해충으로 분류되었다. 수확 후에는 총 25종이 조사되었는데, 그 가운데 뽕나무총채벌레(P. mori), 뽕나무깍지벌레(P. pentagona), 뽕나무명나방(Glyphodes pyloalis Walker), 미국흰불나방(Hyphantria cunea Drury), 점박이응애(T. urticae) 5종이 주요 해충으로 분류되었다. 오디용 뽕나무에서 발생하는 해충은 조사지역에 따라 달랐으나, 뽕나무총채벌레 등 주요 해충 8종과 베짱이(Hexcacentrus unicolor Serville), 뽕나무노린재(Malcus Japonicus Ishihara et Hasegawa), 썩덩나무노린재(Halyomorpha halys stal), 오 리나무좀(Xylosandrus germanus Blandford), 나방류 4종(Bombyx mandarina Moore, Euproctis subflava Bremer, Acronicta major Bremer, Agrotis trifurca Butler) 및 명주달팽이(Acusta despecta Sowerby)는 모든 조사지역에서 발생되었다.

The experiment was conducted to investigate emergence response of lowland weeds at different soil moisture contents, burying depths and upon changes in soil moisture. Rice germination was over 50% at all burying depths under aerobic condition, but the emergence rate of the soil surface placed seeds in saturated and flooded conditions decreased by 19% and 29%, respectively, as compared with that of aerobic condition. Rice seeds at burying depth of over 3 cm did not emerge at all. The emergence rate of Echinochloa crus­galli (L.) Beauv. in aerobic condition was lower than 30%, but the emergence pattern of E. crus galli (L.) Beauv. at different soil moisture contents and seeding depths was similar to that of rice. Emergence behavior of lschaemum rugosum Salisb., Ludwigia octovalvis (Jacq.) Raven and Sphenoclea zeylanica Gaertn. which are dominant lowland weed species in the Philippines also differed depending on soil moisture conditions and burying depths. lschaemum rugosum Salisb. emerged at all burying depths under aerobic condition, whereasLudwigia octovalvis (Jacq.) Raven emerged only at 0 cm deep under saturated and aerobic condition and Sphenoclea zeylanica Gaertn. at 0 cm deep under flooding condition. Weed seeds planted at 1, 3, and 5 cm deep in continuous flooded and saturated condition did not emerge at all, but upon a change of soil moisture condition from saturated to drainage (S~rightarrow D) and flooded to drainage (F~rightarrow D), grass weeds began to germinate again and the average emergence rate in S~rightarrow D and F~rightarrow D were 26% and 5% forE. crus­galIi (L.) Beauv., 9% and 8% forI. rugosum SaIisb., respectively. Weed seeds buried in soil in the pot showed great emergence at S~rightarrow D but did not emerge under continuous flooded condition. The diversity index accounting for dominance degree and occurrence aspect of weed, was the lowest at F~rightarrow D.