The aim of this poster is to investigate the effects that cover crop species and their residues may have on weed community composition in a winter cover crop-tomato sequence. Experiments were carried out at the experimental farm of Tuscia University from 2011 to 2013. The treatments consisted in:
(i) 5 soil managements [three winter cover crop species (hairy vetch, phacelia, and white mustard), a winter fallow soil mulched with barley straw before tomato transplanting, and a winter fallow tilled before tomato transplanting (conventional)};
(ii) 2 levels of nitrogen fertilization applied on tomato [0 kg of N ha-1 (N0) and 100 kg of N ha-1 (N100)];
(iii) 2 levels of weed management applied on tomato [weed-free (WF) and weedy (We)].
Cover crop residues were arranged in strips and tomato seedlings were transplanted in paired rows into the mulch strips. In the weedy treatments the weeds were controlled with a rotary hoe only between the tomato paired rows. Weed species density and weed aboveground biomass were determined at cover crop suppression and at tomato harvesting
