Mixed cropping regimes promote the soil fungal community under zero tillage

Abstract

Fungi of yield soils represent a significant portion of the microbial biomass and reflect sensitivity to changes in the ecosystem. Our hypothesis was that crops included in cropping regimes under zero tillage system modify the structure of soil fungi community. Conventional and molecular techniques provide complementary information for the analysis of diversity of fungal species and successfull information to accept our hypotesis. The composition of fungal community varied according to different crops included in the cropping regimes. However, we detected other factors as source of variation among them, season and sampling depth. The Mixed cropping regimes including perennial pastures and one crop per year promote fungal diversity and species with potential benefit to soil and crop. The winter season and 0-5 cm depth were the largest evenness and fungal diversity. Trichoderma aureoviride and Rhizopus stolonifer could be used for monitoring changes in soil under zero tillage.