The pattern of pathogen diversity and abundance in Lentil (Lens culinaris) fields in Constantine region, Algeria

Lenses are a group of pulses having a socio-economic and nutritional significance. The study was conducted on two fields of Lens culinaris in Constantine region contaminated with molds, had the objective to put a relationship between pathogenic molds associated with these plants and their environment. This study revealed the presence of 20 genera in soils (Absidia, Acremonium, Alternaria, Aspergillus, Bysochlamyces, Chaetomium, Cladosporium, Emericella, Eurotium, Fusarium, Mucor, Paecilomyces, Penicillium, Peronospora, Phytophotora, Pseudalesheria, Scopulariopsis, Scytaldium, Trichoderma and Ulocladium) and 20 genera also in plants (Absidia, Acremonium, Alternaria, Aspergillus, Botrytis, Chaetomium, Cladosporium, Cylindrosporium, Curvularia, Eurotium, Fusarium, Myrothecium, Onychocola, Phytophthora, Pseudalescheria, Penicillium, Peronospora, Rhizoctonia, Trichoderma and Ulocladium). They contribute approximately 54% of the total micropopulation enumerated in studied samples. The development of these pathogenic strains is governed by environmental conditions namely the chemical elements in soil, pH, electrical conductivity, Nitrogen, Carbon and saturation. The results we have obtained shows that the chemical variations ground contribute to the right development fungi and their transfer to plants   Key words: Lens culinaris, soil, fungi.