?arrow Row Spacing and Cover Crops to Suppress Weeds and Improve Sulla (Hedysarum coronarium L.) Biomass Production

Sulla (Hedysarum coronarium L.) is a new candidate crop for biofuel production. A field trial was conducted in 2018–2020 Pyrgos, Greece, and repeated 2019–2021 to evaluate different row spacings cover crops weed management sulla two-factor randomized complete block design (RCBD) with four replications. Four spacings, namely 76-cm, 51-cm, 38-cm, 19-cm, were assigned the main plots. Three crops, farro wheat (Triticum turgidum subsp. dicoccum (Schrank ex Schübler) Thell.), common vetch (Vicia sativa L.), white mustard (Sinapis alba an untreated control, subplots. In first year of growth, biomass, stem, total dry matter yield (DMY) affected by growing cycles (p-value ? 0.05). The 19- 38-cm resulted lowest biomass highest stem DMY growth. White most weed-suppressive both years followed heat. observed subplots years. combination 38 cm spacing as cumulative two-year (18.9 t ha?1). Further case studies are needed more cultural practices other major under soil climatic conditions.