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Validation of a Coupled Herbicide Fate and Target Plant Species Effects Model

Description: A series of experiments provided data to parameterize and validate a coupled herbicide fate and target plant species effects model. This simulation model is currently designed to predict responses of water hyacinth populations to treatments of the dimethylamine formulation of 2,4- dichloro-phenoxy acetic acid (2,4-D -DMA). Experiments investigated 1) the response of water hyacinth to varying exposures of 2,4-D (DMA); 2) the role of water hyacinth density and herbicide interception in treatment … more
Date: December 1989
Creator: Clifford, Philip A. (Philip Alan)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

The Effects of Glyphosate Based Herbicides on Chick Embryo Development

Description: Glyphosate based herbicides are among the most widely used herbicides in the world. The purpose of this study was to determine developmental toxicity of glyphosate, the active ingredient in the common herbicide Roundup, on developing chicken embryos. Few studies have examined toxic effects of glyphosate alone versus the full compound formulations of Roundup, which include adjuvants and surfactants. Adjutants and surfactants are added to aid in solubility and absorption of glyphosate. In thi… more
Date: August 2013
Creator: Winnick, Blake Edward
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Atrazine Monitoring and Modeling in the Lake Lavon Watershed

Description: This report describes a study to identify the distribution and extent of areas potentially at risk for atrazine (a broad leaf weedkiller) runoff in the Lake Lavon watershed, which is a major water supply for the Dallas area. The report presents the results of the study and makes recommendations for how information can be used in a cost-effective watershed atrazine reduction strategy.
Date: August 2001
Creator: Atkinson, Samuel F.; Waller, William T.; Dickson, Kenneth L.; Sanmanee, Sirichai & Moreno, Maria C.
Item Type: Refine your search to only Book
Partner: UNT Libraries
open access

Qualitative and Microcosm Predictions of Effects of Endothal for Control of Myriophyllum spicatum in Pat Mayse Lake, Texas

Description: Qualitative and microcosm models were used to predict effects of herbicide application for control of Myriophyllum spicatum. Predictions were compared to data from Pat Mayse Lake, a Texas reservoir, where localized areas were treated with endothall. Although milf oil was temporarily eliminated, when endothall was used according to manufacturer's directions, no ecologically significant direct or indirect effects were observed on nontarget species or abiotic water quality. Comparisons of the pred… more
Date: May 1984
Creator: Hinman, Mark L.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Controlling Sagebrush on Range Lands.

Description: Discusses various methods of controlling sagebrush; also describes regrassing and details benefits of doing so.
Date: October 1954
Creator: Pechanec, Joseph F. (Joseph Frank), 1910-; Stewart, George, b. 1888; Plummer, A. Perry, 1911-; Robertson, Joseph H. & Hull, A. C.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

[News Script: Houston]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about Dennis Shepler quiting his job as a protest.
Date: June 30, 1972, 10:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Script
Partner: UNT Libraries Special Collections
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