Full TGIF Record # 240395
Item 1 of 1
Publication Type:
i
Report
Author(s):Eplee, R. E.; Herron, J. W.; Cotter, D. J.
Author Affiliation:Department of Horticulture, University of Kentucky, Lexington
Title:The effect of nutrients on the toxicity of three herbicides to large crabgrass seedlings
Section:Ecological, physiological and botanical aspects of weed control
Other records with the "Ecological, physiological and botanical aspects of weed control" Section
Meeting Info.:St. Paul, Minnesota: December 3-5, 1962
Source:Proceedings: Nineteenth Annual Meeting: North Central Weed Control Conference. 1962, p. 47.
# of Pages:1
Publishing Information:[Lincoln, Nebraska]: [North Central Weed Science Society]
Abstract/Contents:"Experiments were conducted at the University of Kentucky to determine the effects of nitrogen on the toxicity of dalapon and atrazine to large crabgrass seedlings. Other experiments were to determine the effects of potassium and phosphorus on the toxicity of dalapon and amitrole. The experiment utilized an aqueous solution growing medium in a growth cabinet environment. Each test was conducted over a period of 8 days and the results statistically analyzed. Nutrients and herbicide rates used in the experiments are presented in Table 1. Evaluations of the results were based on fresh weight of stems and leaves, visual growth ratings, injury ratings, and an additive value of the three ratings. Toxicity of dalapon was found to be reduced by higher rates of nitrogen, but was not significantly affected by the various levels of phosphorus and potassium. The toxicity of atrazine was found to increase as the rates of nitrogen were increased. Amitrole toxicity was not significantly affected by varying the rates of phosphorus and potassium. In a supplemental experiment, chlorosis and growth reduction associated with amitrole at high illumination was not apparent under very low illumination. In evaluating these results it should be kept in mind that seedlings were grown for only 8 days. Phosphorus and potassium stored in the seeds may have influenced the results."
Language:English
References:0
Note:This item is an abstract and table only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Eplee, R. E., J. W. Herron, and D. J. Cotter. 1962. The effect of nutrients on the toxicity of three herbicides to large crabgrass seedlings. Proc. North Cent. Weed Sci. Soc. p. 47.
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