STUDIES ON THE EFFECT OF PSEUDOMONAS GLYCINEA ON SEPTORIA GLYCINES DEVELOPMENT ON FOLIAGE OF THE HAROSOY SOYBEAN GROWN UNDER CONTROLLED ENVIRONMENTAL CONDITIONS

Abstract

Conditions are described for growing soybeans in a plant growth chamber and for the development and study of bacterial blight, Pseudomonas glycinea (Coerper) Stapp, and of brown spot, Septoria glycines Hemmi. An investigation of a possible interrelationship between these two organisms during disease development revealed a marked increase in brown spot infection in the presence of bacterial blight. This resulted from a synergistic bacteria–fungus association of the two pathogens in doubly inoculated foliage of the soybean grown in the plant growth chambers.