Aggressiveness of fifteen isolates of Phaeoisariopsis griseola and variations in angular leaf spot symptom development in common bean were studied. The isolates were selected based on their virulence and genetic differences and represented Andean, Afro-Andean and Mesoamerican groups of P. griseola. Aggressiveness was determined based on length of incubation period, rate of lesion expansion, les...

.lead concentration has recently increased in country side fields and industrial regions. in the research, the effect of different concentrations of lead acetate on arthrobotrys oligospora growth, sporulation, trap formation and efficiency and also the activity of the extracellular protease of the fungus investigated. a. oligospora is one of the most important biocontrol agents of plant parasit...

The influence of climate and time of deposition on the colonization of sheep faeces by nematophagous fungi was examined in the Mata Region of Minas Gerais State, Brazil. Sheep faeces were collected from the rectums of animals and deposited on pastures of Brachiaria decumbens in the months of July and October 1995 and January and April 1996. Samples of the deposited faeces were recovered 3, 7 an...