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| Web URL(s): | https://listings.lib.msu.edu/nwtgc/1989.pdf#page=7
Last checked: 01/16/2017
Requires: PDF Reader |
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| Publication Type:
| Proceedings |
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| Author(s): | Couch, Houston B. |
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| Author Affiliation: | Professor of Plant Pathology, Dept. of Plant Pathology, Physiology and Weed Science, Virginia Tech, Blacksburg |
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| Title: | Maximizing the effectiveness of fungicides |
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| Meeting Info.: | September 18-21, 1989 |
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| Source: | Proceedings of the 43rd Northwest Turfgrass Conference. Vol. 43, 1989, p. 1-7. |
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| Publishing Information: | Spokane, WA: Northwest Turfgrass Association |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Fungicides; Chlorothalonil; Anilazine; Triadimefon; Iprodione; Propiconazole; Vinclozolin
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| Abstract/Contents: | "This research has shown that in the use of a boom-type spray system, there are specific dilution rates at which fungicides perform most efficiently. Also, nozzle type and nozzle pressure can have a significant effect on fungicide performance. Flat fan nozzles equipped with T-8002 to T-8004 tips and swirl chamber RA-10 and RA-15 nozzles provide optimum fungicide distribution at 30 psi at the nozzle. The flood jet TK-30 nozzle does not give levels of disease control comparable to that obtained with flat fan or swirl chamber nozzles. Flood jet nozzles should not be used for applying fungicides. If the maximum potential of a fungicide is to be realized, it is important that careful consideration be given to the selection of the optimum dilution level, nozzle type and size, and nozzle pressure for its application. Where leaf washing by rainfall or sprinkler irrigation after fungicide application is concerned, our studies have shown that: (1) Rainfall or sprinkler irrigation of a treated area before the spray dries on the leaves will significantly reduce the disease control effectiveness of non-systemic materials. (2) If the fungicide formulation contains an effective sticking agent, either rainfall or sprinkler irrigation will not appreciably reduce the material's initial disease control effectiveness. (3) Systemic fungicides are not as vulnerable as non-systemics to reduction in disease control effectiveness by rainfall or watering before the spray dries on the leaves. (4) The basic effectiveness of a turfgrass fungicide is established by the initial amount of water used in the spray formulation. Once the material has dried on the leaves, it cannot be dislodged or redistributed on the plant by sprinkler irrigation or rainfall." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related report, Maximizing the Effectiveness of Fungicides, 1988, R=294014. R=294014 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Couch, H. B. 1989. Maximizing the effectiveness of fungicides. p. 1-7. In Proceedings of the 43rd Northwest Turfgrass Conference. September 18-21, 1989. Spokane, WA: Northwest Turfgrass Association. |
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| Web URL(s):
https://listings.lib.msu.edu/nwtgc/1989.pdf#page=7
Last checked: 01/16/2017
Requires: PDF Reader |
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MSU catalog number: SB 433 .N6 no.43 |
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