PubAg

Main content area

You searched for: Author "Haller, William T." Remove constraint Author: "Haller, William T." Subject Florida Remove constraint Subject: Florida Subject diquat Remove constraint Subject: diquat
Start Over

Search

Did you mean to type: heller or halder?

2  Search Results

1 - 2 of 2
Number of results to display per page

Search Results

1. Documentation of landoltia (Landoltia punctata) resistance to diquat

Author:
Haller, William T.,   et al.   ; Koschnick, Tyler J.; Glasgow, Les;     Show all 3 Authors
Source:
Weed science 2006 v.54 no.4 pp. 615-619
ISSN:
0043-1745
Subject:
weed control; aquatic weeds; diquat; cross resistance; electron transfer; herbicide-resistant weeds; resistance mechanisms; paraquat; Araceae; herbicide resistance; photosynthesis; pesticide formulations; Florida
Abstract:
... 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 ...
DOI:
10.1614/WS-06-002R.1

2. Effect of the foliar application of diquat herbicide on selected natural area and field crop species

Author:
HALLER, WILLIAM T.,   et al.   ; PURI, ATUL; MACDONALD, GREGORY E.; SHILLING, DONN S.;     Show all 4 Authors
Source:
Weed biology and management 2008 v.8 no.2 pp. 133-138
ISSN:
1444-6162
Subject:
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
Abstract:
... 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, ...
DOI:
10.1111/j.1445-6664.2008.00286.x