The Influence of Long-Term Different Crop Rotations and Monoculture on Weed Prevalence and Weed Seed Content in the Soil

Equally effective way to achieve sustainable farming and the challenge set by European Commission on 20 May 2020: proper crop rotation thus reduction of quantity on-farm chemicals. Long-term stationary field experiments were established in 1966 at Vytautas Magnus University Experimental Station (54°53? N, 23°50? E). The study was conducted with intensive, three-course, row crops, for green manure rotations, rye monoculture as well during last 5-year period a 50-year investigation determine effect combinations weed density seed bank grain yield. In cereal counting performed twice: determined before application herbicides, done harvest. Weed seedlings counted, their botanical species determined, annual perennial number estimated. primary tillage soil. results obtained confirmed hypothesis that climate change intensive farming, long-term rotations are likely increase productivity, reduce weeds banks soil, contribute maintaining agroecosystem sustainability. winter 1000 weight yield decreases mass increases showing strong negative correlations: y = 475.56 ? 11.93x, r ?0.91, p ? 0.05; 82.97 ?14.82x, ?0.97, 0.01. Reseeding crops leads growing prevalence such Equisetum arvense L. Mentha arvensis. Crop structures these days dominated cereals, which inevitably spread weeds, therefore, importance context farming.