Indian Phytopath. 64 (1) : 102-104 (2011) Dry root rot caused by Macrophomina phaseolina (Tassi)

Goid is responsible for considerable loss in mungbean (Vigna radiata L. Wilczek). The amendments of soil with decomposable organic matter is an effective method of changing the soil and rhizosphere environment. Composts have been used with varying levels of success for the suppression of many soil borne plant pathogens and induced diseases (2). The mechanism by which amendments of soil with compost can suppress plant pathogens is basically through the changes brought in the soil like improvements in water holding capacity, soil aggregates, porosity and overall fertility. These changes in turn, improve organic matter content as well as microbial communities. An interesting phenomenon that has been observed in many such studies is an enhancement in the population of antagonists against soil-borne pathogens