Pythium species were isolated from diseased samples of creeping bentgrass and annual bluegrass. Among fourteen isolates from decayed roots and crowns, seven were P. graminicola, five were P. torulosum and two were P. ultimum. These species were identified by comparison of cultural and morphological characteristics to literature and reference isolates. In a tissue culture plate assay for quantif...

ABSTRACT: Methanolic crude extracts of 32 plant species belonging to 21 families collected from the west of Iran were screened for antifungal activity against three economically important phytopathogenic fungi, Phytophthora drechsleri, Pythium aphanidermatum and Rhizoctonia solani. Bioassay of the extracts was conducted by agar diffusion method on agar plate cultures with five replications. Twe...

Plants can influence the soil they grow in, and via these changes in the soil they can positively or negatively influence other plants that grow later in this soil, a phenomenon called plant-soil feedback. A fascinating possibility is then to apply positive plant-soil feedback effects in sustainable agriculture to promote plant growth and resistance to pathogens. We grew the cut flower chrysant...