Efficacy of Several Fungicides Against Root Rot Disease (Phytophthora capsici Leonian) on Pepper

Root rot disease caused by the fungus Phytophthora capsici can cause up to 60% yield loss of pepper in West Kalimantan, which is spread across Singkawang, Bengkayang, Pontianak, Sintang, and Sekadau Regencies. Control BPB chemically with fungicide considered be effective enough suppress both vitro field. This study aims examine effectiveness several active ingredients that are widely used control, namely Chlorotalonil, Azoxystrobin, Mankozeb, Phosphoric Acid. Efficacy tests were carried out on sample plant plots consisting 25 trees for each treatment ingredient fungicide. Fungicide application was 3 times (2-week intervals) within months. attack intensity calculated obtain Level (TE) category used. The phosphite acid showed highest efficacy level 30.06%, while Azoxystrobin Mankozeb had TE values 29.01% 28.23%, respectively. lowest result function Chlorotalonil a percentage only 4.13%.