In this review, an overview was given of the mutual interactions between nematodes and fungi of the genus Trichoderma sp. due to the potential of these fungi to protect plant roots from plant-parasitic nematodes on the one hand and the influence of nematodes (fungivores) on the efficacy of the fungus on the other. In addition, an overview of the advantages of Trichoderma sp. for agricultural production was given. The basis of sustainable agricultural production is the healthy functioning of the soil ecosystem. The diversity of organisms—bacteria, protozoa, algae, metazoans (nematodes) and fungi—improves the quality and performance of the soil by maintaining biological productivity. Root exudates in the rhizosphere support microbial communities that play a key role in regulating the dynamics of organic matter decomposition and the availability of plant nutrients. The microbial activity of organisms in the soil is interconnected and interacts to form a soil food web that reflects the condition, function and health of the soil. The energy in food webs flows through trophic chains of consumers, which are divided into energy channels. Root, bacterial and fungal channels increase soil biomass, carbon (C) and energy flow through the soil food web. The structure of the nematode community is an effective tool for the biological assessment of soil quality. This is due to a number of characteristics that nematodes have, including the following: a great diversity of species, the possibility of subdivision according to different criteria such as trophic groups and c-p groups, the duration of reproduction, the ease of sampling, the identification of genera and preservation, etc. Nematodes are involved in various ecological functions in the soil, of which the interaction between them and fungi is based on antagonism or mutualism, which is the basis for a better understanding of their impact on the ecosystem. Fungi of the genus Trichoderma sp. are successful colonizers of all habitats, secondary opportunists and fast growing.

Root-knot nematodes of the genus Meloidogyne belong to the most economically important group of plant-parasitic nematodes and also to the most important plant pests that can cause significant economic losses in crop production. They are poly phagous,...

Ekološki uzgoj povrća temelji se na zaštiti i ishrani biljaka organskim preparatima. Rajčica je jedna od najvažnijih uzgajanih povrtnica na našem području. Za ovo istraživanje rajčica je posađena na otovorenom, praćen je razvoj Phytophthora infestans te je utvrđen utjecaj vermikompostnog čaja na intenzitet bolesti, broj i masu plodova. U pokusu su ispitani tretmani: tretiranje rajčice vermikompostnim čajem zalijevanjem tla (Vz), zalijevanje tla i prskanje nadzemnog dijela biljke (Vz+Vp), tretiranje fungicidom Penncozeb 75 DG (F) i kontrola (K) bez primjene vermikompostnog čaja ili fungicida. Plamenjača se javila u slabijem intenzitetu, a indeks bolesti kretao se od 0,04 (Vz+Vp) do 0,08 u kontroli (K). Najveći prosječan broj plodova utvrđen je u tretmanu Vz+Vp, a statistički najmanji u kontroli (K). Tretman Vz+Vp pokazuje i statistički najbolji utjecaj na masu plodova, zatim ga slijede tretmani Vz i F, što potvrđuje pozitivan utjecan vermikompostnog čaja u odnosu na netretiranu rajčicu.