Level of Damage and Spread of Stewart’s Wilt Disease in Corn in Banyumas District

Abstract

Stewart's wilt disease is caused by Pantoea stewartii subsp. Stewartii is an important disease of maize. Information about the level of damage and the pattern of spread of the disease is needed to design a management strategy for Stewart's wilt. This study aimed to obtain the level of damage and the pattern of spread of Stewart's wilt disease on maize in the Banyumas area. A survey of Stewart's wilt disease was carried out using multistage purposive random sampling. The observed variables were disease incidence and AUDPC (area under the disease progress curve). Results showed that level of damage of sweet corn caused by P. stewartii subsp. Stewartii in Wangon, Pekuncen, Rawalo, Patikraja, and Purwojati sub-districts, Banyumas district ranged from 0.15% to 1.67%. This value was classified as very mild. The distribution pattern of Stewart's wilt includes a gradient distribution pattern that collects in one place close to the inoculum source.