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- Haller, William T., et al. Show all 3 Authors
- Weed science 2006 v.54 no.4 pp. 615-619
- weed control; aquatic weeds; diquat; cross resistance; electron transfer; herbicide-resistant weeds; resistance mechanisms; paraquat; Araceae; herbicide resistance; photosynthesis; pesticide formulations; Florida
- ... Landoltia was collected and cultured from a canal in Lake County, Florida, where diquat was used repeatedly during the past 20––30 yr for duckweed control. Recent applications of diquat failed to provide adequate control of duckweed, and a new commercial formulation of diquat was suspected. The new formulation was not the cause of reduced efficacy. Static exposures (48 h) to various concentrations ...
- HALLER, WILLIAM T., et al. Show all 4 Authors
- Weed biology and management 2008 v.8 no.2 pp. 133-138
- Pinus elliottii; Pteridium aquilinum; Woodwardia; Glycine max; Helianthus annuus; Gossypium hirsutum; Zea mays; Allium sativum; weed control; chemical control; diquat; pesticide application; application rate; foliar application; phytotoxicity; nontarget organisms; adverse effects; field crops; crop production; conservation areas; Florida
- ... Field experiments were conducted to determine the non-target impact of foliar-applied diquat on selected plant species. Diquat was applied to emerged bracken fern, chain fern, slash pine, soybean, sunflower, cotton, corn, and onion at rates varying from 0.02-4.5 kg ai ha⁻¹ of diquat cation, which allowed for the determination of the no-effect rate and the rate that caused 25, 50, and 100% injury, ...