Relationship Between whitefly (Bemisia tabaci) Population and Pepper Yellow Leaf Curl Disease on Chili Plant Yield in The Field

Whitefly vector insects can spread the Pepper yellow leaf curl Indonesia virus (PYLCIV) that causes Begomovirus disease. One whitefly transmit virus, which belongs to genus. It is suspected more whitefly, higher incidence and severity of The increased disease affect chili yields. This study aimed assess relationship between population level, disease's intensity, production peppers. research method used was a survey farmers' plantations. Observations intensity were carried out on scheduled basis. results showed affected Begomovirus. Each addition one whitefly/leaf will increase by 25.981%, 15.269%, reduce yield plants 40.044 kg/ha. Meanwhile, every 1% in 2.867