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Herbicides for control of two bindweed species (Calystegia silvaticum and Convolvulus arvensis) in asparagus

, : Herbicides for control of two bindweed species (Calystegia silvaticum and Convolvulus arvensis) in asparagus. Proceedings of the forty fifth New Zealand plant protection conference, Wellington, New Zealand, 11-13 August 1992: 27-30

Several herbicides were evaluated for their harvest-time control of C. silvaticum in 10-year-old asparagus New Zealand Beacon at Howtiu in 1989-90 and of C. arvensis in Mary Washington at Horahora in 1990. Most treatments provided good control of sprayed top growth, but considerable emergence of new weed vines from the extensive root systems continued. Imazapyr at rates of 0.5-1 kg/ha gave the best control of both species, with effects lasting through to the following growing season.


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