Survival of Erwinia chrysanthemi pv. zeae in Soil

Abstract

The survivial of Ersinia chrysanthemi pv. zeae, which causes corn stalk rot diseasr, was studied in the field at thamung, Kanchanabrui Province. In a RCB experiment with 5 treatments and 4 rsplication, choped infected corn stem was mixed in the soil at different levels; in top soil and at 10, 20 and 30 cm. depth. Chopped healthy corn stems mixed with soil served at control. The soil was sampled every 2 weeks after planting. The survival period of the disease was up to 6 weeks and survival tended to be the highest at 2 weeks after being buried at 20 cm. depth.