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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Murdock, E. C.;
Guice, J. B. |
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| Author Affiliation: | Clemson University |
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| Title: | Simple Keys for Identification of Grass and Morningglory Species. |
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| Source: | Southern Weed Science Society Proceedings. Vol. 40, January 1987, p. 353. |
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| Publishing Information: | Nashville, TN: Southern Weed Science Society. |
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| Keywords: | TIC Keywords: Weeds
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| Abstract/Contents: | "Weeds compete with crops for light, water, nutrients, and other resources and cost U.S. crop producers over $12 billion annually. Morningglory species are among the most troublesome weeds in crop production and are becoming more dominant as a problem weed. The Poaceae family contains 40% of the most competitive weeds in world agriculture and of the eighteen most important weed species worldwide, ten are in the Poaceae family. Correct weed identification is essential in implementing effective weed control programs and proper identification of morningglory and grass species is difficult, especially for individuals not involved in weed science on a regular basis. Our objective in developing simple dichotomous keys was to provide agriprofessionals a simple and accurate means of identifying grass and morningglory species. Grass and morningglory identification keys were developed during the summer of 1986 and tested for accuracy and usability during the weed science field training at the Pee Dee Research and Education Center, Florence, S.C. Participants included extension agents, agricultural industry representatives, consultants, and students from Florence-Darlington Technical College. Of the fifty weed species utilized in the weed identification test approximately thirty-five were a grass or morningglory species. Without the grass key only 15% of the extension agents, agricultural industry representatives, and consultants had scores of 71-100, whereas with the key 97% scored 71 or greater. In the same clientele group 29 and 97% scored 71 or greater without and with the morningglory key, respectively. In the student group 0 and 91% of the participants scored 71 or greater without and with the grass key, respectively, and 0 and 50% scored 71 or greater without and with the morningglory key, respectively. The average number of years of experience for extension agents, agricultural industry representatives, and consultants was eight, whereas students from Florence-Darlington Technical College had essentially no experience. The scores of these groups indicate the effectiveness of the grass and morningglory keys in increasing the ability of participants to correctly identify grass and morningglory species." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Murdock, E. C., and J. B. Guice. 1987. Simple Keys for Identification of Grass and Morningglory Species.. South. Weed Sci. Soc. Proc. 40:p. 353. |
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MSU catalog number: SB 611 .S6 |
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