Improved Methods for Rice Blast Forecasting

벼 도열병의 발생예찰을 위한 개선된 방법

  • Kim Chang Kyu (Dept. of Plant Pathology, Institute Agricultural Sciences)
  • 김장규 (농업기술연구소 병리과)
  • Published : 1982.03.01


There was a highly positive correlation between the number of trapped conidia from fourteen days to four days before direct observation of blast lesion was made and leaf blast incidence. This same relationship was found between the number of conidia trapped from August 11 to August 15 and August 21 to August 25 and percent of panicle blast incidence in a Japonica type cultivar Jinheung. Using iodine-potassium iodide (I-KI) method, it was able to detect infection sites of the blast fungus under the field conditions within 30 minutes. The detection of infection sites was four days earlier than direct observation of leaf blast lesion.