Fungicidal and insecticidal activities of various grain extracts against five insect pests and six phytopathogenic fungi

다양한 잡곡 추출물의 살균.살충활성

  • Lee, Hoi-Seon (Institute of Agricultural & Technology and Faculty of Biotechnology, College of Agriculture, Chonbuk National University) ;
  • Choi, Gyung-Ja (Screening Division, Korea Research Institute of Chemical Technology) ;
  • Cho, Kwang-Yun (Screening Division, Korea Research Institute of Chemical Technology) ;
  • Lee, Sang-Gil (Forestry Research Institute) ;
  • Ahn, Young-Joon (Division of Applied Biology and Chemistry and the Research Center for New Bio-Materials in Agriculture, College of Agriculture and Life Sciences, Seoul National University)
  • Published : 2000.09.30

Abstract

Methanol extracts from 21 grains were tested for fungicidal activities against six phytopathogenic fungi and for insecticidal activities toward five insect pests in a greenhouse. The efficacy varied with both the plant pathogen/insect pest and grain species used. Potent fungicidal activity at 5 mg/pot, were produced from extracts of Elymus sibiricus and Hordeum vulgare var. nudum against Pyricularia grisea and Erysiphe graminis and these of Sesamum indicum (W) and Triticum aestivum against Puccinia recondita and Erysiphe graminis. At 2,500 ppm, potent insecticidal activities were exhibited from the extracts of Fagopyrum esculentum against Myzus persicae and Ischaemum crassipes, and these of Oryzo sativa var. glutinosa, Panicum miliaceum, Setaria italica, Sorghum bicolor, and T. aestivum against Tetranychus urticae. All grain extracts revealed weak or no fungicidal and insecticidal effect against Phytophthora infestans, Plutella xylostella and Spodoptera litura. As a naturally occurring fungicide and insecticide, grain-derived materials described could be useful as new fungicidal and insecticidal products against phytopathogenic fungi and insect pests.