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Publication Type:
| Refereed |
Author(s): | Lowe, David B.;
Whitwell, Ted;
McCarty, Lambert B.;
Bridges, William C. |
Author Affiliation: | Lowe: Department of Horticulture, Clemson University, SC; Whitwell and McCarty: Department of Horticulture, Clemson University, Clemson, SC; Bridges: Department of Experimental Statistics, Clemson University, Clemson, SC |
Title: | Kyllinga brevifolia, K. squamulata, and K. pumila seed germination as influenced by temperature, light, and nitrate |
Section: | Weed Biology and Ecology Other records with the "Weed Biology and Ecology" Section
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Source: | Weed Science. Vol. 47, No. 6, November/December 1999, p. 657-661. |
Publishing Information: | Champaign, IL: Weed Science Society of America |
# of Pages: | 5 |
Keywords: | TIC Keywords: Kyllinga brevifolia; Kyllinga squamulata; Kyllinga pumila; Seed germination; Environmental factors; Temperatures; Light; Nitrates; Weed profile; Weed control; Application rates
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Abstract/Contents: | "Kyllinga species are becoming more prevalent in turfgrass sites throughout North America. The effects of nitrate (50, 200, and 400 mg Lā»Ā¹), temperature (33/24, 25/17, 19/11 C day/night, respectively), and light on seed germination of three Kyllinga species were investigated in growth chambers. Nitrate concentrations did not stimulate Kyllinga species seed germination compared with untreated seeds. All Kyllinga species seeds failed to germinate in darkness but resumed germination once they were placed in light. This is an important pest management strategy because a dense, uniform turfgrass stand with its minimum light penetration to the soil would minimize Kyllinga species seed germination. Higher temperatures increased seed germination rate and percentage occurred of each species after 8 wk. Maximal (> 90%) K. brevifolia germination rate occurred 2-4 wk after initiation in every seed study, whereas K. squamulata seeds germinated continuously. Minimal (< 10%) K. pumila seeds germinated until alternating diurnal temperatures were imposed." |
Language: | English |
References: | 16 |
Note: | Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Lowe, D. B., T. Whitwell, L. B. McCarty, and W. C. Bridges. 1999. Kyllinga brevifolia, K. squamulata, and K. pumila seed germination as influenced by temperature, light, and nitrate. Weed Sci. 47(6):p. 657-661. |
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