Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Annual report 1974/75.

Abstract

Pp. 34-35. Vegetable crops. In onions, programmes involving several applications of methazole were well tolerated by the crop. Wireweed [Polygonum aviculare] and clovers [Trifolium spp.] were well controlled but plantain [Plantago major] was resistant. Propachlor pre- and post-em. had no effect on the crop and gave useful control of barnyardgrass [Echinochloa crus-galli] but was also ineffective against P. aviculare. Bentazone + wetter and asulam caused severe leaf damage but neither caused significant yield depression. In green beans, bentazone + wetter post-em. did not adversely affect the yield unless it was applied early (2-leaf stage) and at a high rate (4 kg/ha). Bentazone + wetter (tested at 5 sites) and a terbutryne + terbuthylazine mixture (tested at 3 sites) were evaluated in dry edible beans. Bentazone-treated plots outyielded controls at all sites and the cultivated ones at 4 sites. The herbicide mixture resulted in a small yield depression at one site but outyielded the controls and cultivated plots at the other two.