science-review.ru
Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454
ISSN 2500-3399
ПИ №ФС77-57454
INTERPOPULATION ANALYSIS OF BLACK CURRANT PHYTOCENOSES IN NORTHERN FOREST OB REGION
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The community of 12 species and groups of organisms was found in black currant agrocenoses, among which the most common during the studies were Septoria ribis, Gloeosporium ribis, Cecidophyes ribis, Cryptomyzus ribis, filloplana and rhizosphere saprotrophic microorganisms. The following interpopulation relationships forms were identified in the community: parasitism between black currants and plant pathogens (S. ribis, G. ribis), black currants and pests (C. ribis, Cr. ribis), competition between plant pathogens, the antagonism between plant pathogens and Ps. fluorescens, Streptomyces spp., neutralism between currant bud mite (C. ribis) and plant pathogens, antagonists and pests; protocooperation emerged between the leaf gall aphid (Cr. ribis) and epiphytic microflora, nonspecific inhibition between black currants and epiphytic organisms. Application of Ps. fluorescens slurry strains on leaf litter limited S. ribis survival, causes damage and picnidia and picnospores, accelerated decomposition of crop residues, reduced the S. ribis ecological niche size, especially for groups of resistant and weakly resistant varieties. Double Ps. fluorescens suspension coating on fallen and vegetative leaves limited S.ribis reproduction intensity and its ecological niche size, especially for groups of low and weakly resistant varieties.