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Web URL(s): | http://www.bioone.org/bioone/?request=get-document&issn=0890-037X&volume=014&issue=01&page=0001 Last checked: 03/25/2016 Access conditions: Item is within a limited access website http://www.bioone.org/doi/pdf/10.1614/0890-037X%282000%29014%5B0001%3AFEODHA%5D2.0.CO%3B2 Last checked: 03/25/2016 Requires: PDF Reader |
Publication Type:
| Refereed |
Author(s): | Kadir, Jugah B.;
Charudattan, R.;
Stall, William M.;
Brecke, Barry J. |
Author Affiliation: | Kadir: Former Graduate Student, and Charudattan: Professor, Plant Pathology Department, Stall: Professor, Horticultural Sciences Department, University of Florida, Gainesville, FL; and Brecke: Professor, West Florida Research and Education Center, Jay, FL |
Title: | Field efficacy of Dactylaria higginsii as a bioherbicide for the control of purple nutsedge (Cyperus rotundus) |
Section: | Research Other records with the "Research" Section
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Source: | Weed Technology. Vol. 14, No. 1, January-March 2000, p. 1-6. |
Publishing Information: | Champaign, IL: Weed Science Society of America. |
# of Pages: | 6 |
Keywords: | TIC Keywords: Dactylaria higginsii; Biological control; Cyperus rotundus; Conidia; Postemergence herbicides; Application rates; Dry weight; Shoots; Tubers; Disease severity; Growth
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Geographic Terms: | Florida |
Abstract/Contents: | "An isolate of the fungus Dactylaria higginsii obtained from purple nutsedge in Florida was highly pathogenic to Cyperus spp. The potential of this isolate as a bioherbicide was field tested in natural populations of purple nutsedge in Gainesville and Jay, FL. The fungus was applied in 0.5% MetamucilĀ® as a carrier, and the treatments were: carrier only, 10āµ conidia/ml + carrier, and 10ā¶ conidia/ml + carrier. Treatments were applied as single, double, or triple postemergence (POST) sprays at biweekly intervals. The disease and secondary infections developed in about 5 and 15 d after inoculation, respectively, killing most of the infected leaves. All weed growth parameters and disease progress rates were affected by inoculum dosage and inoculation frequencies. Three inoculations, each at 10ā¶ conidia/ml, provided effective control of purple nutsedge compared to a single inoculation, as measured by shoot dry weight, tuber numbers, and tuber dry weight. Higher rates of disease progress and disease levels, defined by the area under the disease progress curve (AUDPC), occurred with three inoculations at 10ā¶ conidia/ml. Disease progress was slower and the level of weed control was lower at 10āµ conidia/ml. compared to the higher inoculum level. Three applications of 10ā¶ conidia/ml provided > 90% nutsedge control. Dactylaria higginsii appears to be an effective bioherbicide candidate deserving further development for commercial use." |
Language: | English |
References: | 32 |
Note: | Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Kadir, J. B., R. Charudattan, W. M. Stall, and B. J. Brecke. 2000. Field efficacy of Dactylaria higginsii as a bioherbicide for the control of purple nutsedge (Cyperus rotundus). Weed Technol. 14(1):p. 1-6. |
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| Web URL(s): http://www.bioone.org/bioone/?request=get-document&issn=0890-037X&volume=014&issue=01&page=0001 Last checked: 03/25/2016 Access conditions: Item is within a limited access website http://www.bioone.org/doi/pdf/10.1614/0890-037X%282000%29014%5B0001%3AFEODHA%5D2.0.CO%3B2 Last checked: 03/25/2016 Requires: PDF Reader |
| MSU catalog number: SB 610 .W44 |
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