The Yield and Weed Infestation of Winter Oilseed Rape (Brassica napus L. ssp. oleifera Metzg) in Two Tillage Systems

Results from a four-year field experiment were used to evaluate the effect of conventional tillage (CT) and no-tillage (NT) systems on yield, selected yield crop structure elements, weed infestation, contents fat glucosinolates in seeds winter oilseed rape (Brassica napus L. ssp. oleifera Metzg). The study proved beneficial NT system seed only during precipitation shortage growing season. In years with sufficient sum precipitation, higher was produced CT than system. Considering average values period, straw plant density after emergence before harvest, number branches main shoot length, finally 1000 weight significantly compared contrast, more regarding per silique content seeds. statistical analysis results showed no glucosinolate turn, air-dry weeds as well an increased Viola arvensis demonstrated plot rape. Sonchus asper identified but not plot. A Chenopodium album Euphorbia helioscopia detected community diversity similar Shannon-Weinner index (H’) both value Simpson dominance (SI)