Abstract
Abstract
Soybean production in Indonesia needs to supply for domestic needs sufficiently. One of the things that influence is the reduction of soybean harvest areas in Indonesia. One of the solutions to the problem is through extensification by utilizing land under shade, which is called an agroforestry system. Agroforestry systems will change intercrop environmental conditions such as reducing light intensity, temperature and increasing humidity. The condition will affect disease development in soybean plants, especially bacterial pustule disease caused by Xanthomonas axonopodis pv. Glycines. X. axonopodis bacteria can reduce soybean productivity by up to 57.61% in susceptible hosts and favorable environmental conditions. In this research, observations were made regarding the symptoms and incidence of bacterial pustules infection on seven varieties under the shade of mahogany. The varieties used were Anjasmoro, Argomulyo, Dena-1, Dena-2, Denasa-1, Denasa-2, and Devon-1. The research was conducted for three months at KHDTK (Kawasan Hutan dengan Tujuan Khusus) Alas Bromo, Karanganyar, Central Java, Indonesia. The research showed that the lowest incidence of bacterial pustule occurred in the Anjasmoro varieties, with an incidence value of 0%. In comparison, the highest incidence of attacks occurred on the Denasa-1 variety, up to 23.3%.