In a three-year field experiment carried out at Mochełek in the vicinity of Bydgoszcz on good rye complex soil over 2003-2005 there were evaluated an effect of the forecrop, a varied soil tillage under the forecrop and the herbicide dose Huzar 05 WG on weed infestation and yield of Kris winter wheat. The experiment demonstrated that winter wheat grain in the stand after narrow-leaf lupin was more plump and the yields were higher than after spring barley as well as that the kind of the forecrop did not have a considerable effect on the characters of technological quality of bread-baking grain. The tillage method for winter wheat forecrops did not affect weed infestation and yield. Decreasing the dose of Huzar 05 WG herbicide by 1/3, as compared to the dose recommended by the manufacturer, is possible when growing winter wheat as it does not lead to a decrease in the grain yield, despite a slight increase in weed infestation.

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