Hemipteran insect species are increasingly present in areas occupied by plants either productive (agricultural or horticultural) or from natural ecosystems, feeding intensely on their sap. They have a high degree of adaptability, usually migrating from warmer areas to temperate areas, so in recent years there have been more and more host plants, in as diverse areas and growing populations. Through this paper we intend to make an assessment of hemipteran species from 3 spaces with diversified mixed plants (agro-horticultural) in Arad and Timiș County to see the population level, the preference of the host plant and also the natural enemies present identified as potential pest control agents. The results obtained showed the presence of the following categories of hemipteran: aphids, cicadas, stinky bugs and lace bugs. Their population level varied depending on the area analyzed and the range of host plants also differed depending on the species. The most numerous were the aphids, related to the analyzed surface, of course due to their small size, followed by lace bugs (all active in the colonies) and then bedbugs (which are solitary) and cicadas. As for the identified natural enemies, they belonged to the following categories: predatory spiders, ladybugs and parasitic wasps. The level of interaction of spiders and ladybugs was analyzed in the light of a small-scale laboratory study and that of parasitic wasps by the presence of mummies (parasitic aphids) and it was found that all identified categories can fulfill the role of control agent, within varying limits the predominance of pests in an analyzed space.

hemipteran, pests, natural enemies, agro-horticultural spaces

agronomy

Presentation: poster