Anthracnose Disease Attack on Chili Plants in West Sumatra

Abstract

This study aims to determine Colletotrichum spp‘s attack level. causing anthracnose disease in chili in West Sumatra. The location of plant samples is determined based on the chili plant production centers in the high and lowlands. Sampling is done by randomized multi-stage sampling. The first stage determines two districts in the highlands, namely Tanah Flat and Agam, and two districts in the lowlands, namely Padang Pariaman and Padang City. The second stage determines two sub-districts in each district, namely X koto and Batipuh districts (Tanah Datar regency), Ampek Angkek and Sungai Pua districts (Agam regency), 2 x 11 Enam Lingkung and Patamuan districts (Padang Pariaman regency) and Pauh and Kuranji districts (Padang city). The third stage determines the Nagari, and each Nagari selects two chili planting fields with the criteria of having a land area of ± 400 m2; on that land, the chili plants have borne fruit. In each field, 40 sample plants were taken systematically randomly. The parameters observed included the infested plants, the infested fruit, and the intensity of the attack. The results showed that the attack of Colletotrichum spp. causing anthracnose disease on chili plants in West Sumatra was relatively high, with the infested plants ranging from 36.32% to 62.85% (average 45.13%), the number of infested fruits 23.50%-48.00% (average 36.39%) and the intensity of attack 37.8%-73.33% (average 52.85%). There was no visible difference in attack between highlands and lowlands.