Year: 1980
Type: article
Abstract: The effects of different periods of weed competition and of trifluralin (α,α,α-trifluro-2,6-dinitro-N,N-dipropyl-p-toluidine), niclofen (2,4-dichloro-phenyl-p-nitrophenyl ether), and cultivations were studied for effects on yield of rutabaga (Brassica napobrassica Mill. ’York’). Delaying weed removal for 4 wk after crop emergence significantly reduced yields of marketable and total roots compared with plots kept weed-free all season. Delayed weeding beyond 4 wk resulted in progressively greater reductions in yield. Rutabagas kept weed-free for 2, 4, 6, and 8 wk from crop emergence by once-weekly weeding gave yields comparable to those kept weed-free all season. Herbicide treatments without hand-weeding gave significantly lower yields than those with one hand-weeding. The use of three hand-weedings with herbicides was not significantly better than herbicides with one hand-weeding. Level of weed control was dependent on weed species present in the test area; however, a combination of trifluralin and niclofen gave a broader spectrum of control and better crop yields than either used alone.
DOI: 10.4141/cjps80-134
Author: J. A. IVANY
Institution: Agriculture and Agri-Food Canada
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W2051323782