Since the importance of integrated pest management to minimize environmental damage and maximize pest control effectiveness has emerged, efforts to put it into practice have continued. To implement IPM, it is necessary to estimate the economic injury level to determine the control method by identifying pests and weeds that damage the quantity and quality of crops in the field, investigating the occurrence level, and calculating the ratio of cost and effectiveness. Also, damage to host plants caused by increased density of insect pests appears to change plant’s health that key factor for managing crops. Therefore, understanding the relationship between the density of pests and the damage to the host plants is necessary. This study aims to analyze the causal relationship between the density of insect pests and damage to the host plants for estimating the economic injury level of insect pests on the host plants and investigating the possibility of pest control decision-making using plant health status.

• Kimoon Son(Department of Plant Medicine, Gyeongsang National University) Corresponding author
• Taechul Park(Department of Plant Medicine, Gyeongsang National University)
• SoEun Eom(Department of Plant Medicine, Gyeongsang National University)
• Ji-won Jeong(Department of Plant Medicine, Gyeongsang National University)
• Jung-Joon Park(Department of Plant Medicine, Gyeongsang National University, Instituteof Agriculture and Life Science, Gyeongsang National University)