Optimizing spatial arrangement for durum wheat (Triticum durum Desf.) and subclover (Trifolium subterraneum L.) intercropping system

Summary

The aim of this poster is to find a suitable spatial arrangement for the subclover living mulch-durum wheat system in order to provide a high cereal grain yield and a sufficient subclover reseeding after wheat harvesting. The study was carried out at the experimental farm of Tuscia University from 2011 to 2013. Field experiments included:
(i) 5 cropping systems including the monoculture of durum wheat and subclover and three different durum wheat/subclover intercropping spatial arrangements (Fig. 1);
(ii) 2 nitrogen fertilization levels (0 and 100 kg ha-1 of N, hereafter called N0 and N100, respectively);
(iii) 2 weed managements [weed-free (WF) and weedy (We)].
The wheat planting density was 400 seeds m-2 regardless the cropping system, while the subclover planting density was 600 seeds m-2 in pure stand, and 300 seeds m-2 in the intercropped treatments.