Folia Horticulturae

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The response of leeks to weed infestation at different growth stages

Eugeniusz Kołota, Anita Biesiada

Department of Vegetable Crops
University of Agriculture
Cybulskiego 34, 50-205 Wrocław, Poland

In a field experiment conducted in 1985-1987 leek plots were kept weed-free for 3, 5, 7, 9, and 11 weeks after transplanting in the first decade of June or weeding began after similar intervals of time from the date of planting. Weed infestation was estimated shortly before the weeds were to be removed from the plots or in autumn at the time of harvest. It was found that weed control within 5 to 7 weeks of transplanting is the most critical in obtaining high leek yields. Leeks kept weed-free for the first 7-11 weeks did not show a significant yield reduction from later emerging weeds, nor was an adverse effect on growth rate observed if weeding began 5 weeks after planting.

Kołota E., Biesiada A., 1991. The response of leeks to weed infestation at different growth stages. Folia Horticulturae III/1: 3-12.