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| Web URL(s): | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3873905/pdf/279.pdf#page=38
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| Publication Type:
| Refereed |
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| Author(s): | Shaver, J. Bradley;
Agudelo, P.;
Martin, S. B. |
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| Author Affiliation: | School of Agricultural, Forest, and Environmental Sciences, Clemson University, Clemson, SC |
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| Title: | Azoxystrobin and abamectin improve root health of zoysiagrass infected with Trichodorus obtusus |
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| Section: | Abstracts
Other records with the "Abstracts" Section
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| Source: | Journal of Nematology. Vol. 45, No. 4, December 2013, p. 316. |
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| Publishing Information: | Lawrence, Kansas: Society of Nematologists |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Abamectin; Azoxystrobin; Fungicide combinations; Nematicide efficacy; Root growth; Trichodorus obtusus
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| Abstract/Contents: | "Consistently effective control from the currently available nonfumigant nematicides has been difficult to obtain in turf. New products and management strategies are being studied in hope of finding better alternatives. Preliminary research at Clemson University in 2011 suggested that the addition of azoxystrobin to a nematode management plan enhanced the benefits of certain nematicides. Greenhouse and in vitro studies were conducted to determine the efficacy of an experimental abamectin nematicide and its potential interactions with azoxystrobin. Core samples of 'Empire' zoysiagrass (Zoysia japonica), 10.16-cm diam. Π15.24-cm depth, were taken from a field infested with stubby root nematode Trichodorus obtusus in fall 2011. The top 2.54 cm of turf and thatch from each core was removed and set aside. The remaining soil from all cores was bulked, mixed, and packed into 10.16- Π15.24-cm columns. The original 2.54-cm layer of sod was replanted to the columns. Each column served as an experimental unit and was placed in the greenhouse and allowed to establish for 30 d. Treatments included a water control, the experimental abamectin based nematicide, azoxystrobin (as commercial formulation Heritage 50WDG), and a combination of the fungicide and the experimental nematicide. The fungicide was applied two times on a 6-wk interval at 1.2 kg/ha and the nematicide was applied four times on a 3-wk interval at 3.75 L/ha. All treatments, including the control, were applied with a penetrant-type surfactant. Columns were removed from the greenhouse 7 wk after the last application for evaluation. Measurements for each column included dry root weights and nematode counts per 100 cm3 of soil. The study was repeated in 2012. Results indicate that dry root weights were a more useful measure of treatment effects than nematode population density, and data showed an interaction between the experimental nematicide and the fungicide. In 2013 in vitro toxicity experiments were conducted to compare the toxicity of the experimental nematicide with commercially available formulations of oxamyl (trade name Vydate L) and abamectin (trade name Avid). Nematodes were exposed to a range of concentrations for each treatment for 24 hr, followed by a 24-hr recovery period in water. The percentage of mortality was calculated at 2 and 24 hr of exposure, and after recovery. Probit analysis was used to determine the LD50. Nematicidal and nematostatic dose ranges were established. Nematostatic activity is relevant to explaining why the effect of treatment is often more pronounced in root weights than in nematode population densities. Further, it appears that the addition of a fungicide improved the plants ability to tolerate nematode feeding and its use should be considered as part of an integrated nematode management strategy." |
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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):
Shaver, J. B., P. Agudelo, and S. B. Martin. 2013. Azoxystrobin and abamectin improve root health of zoysiagrass infected with Trichodorus obtusus. J. Nematol. 45(4):p. 316. |
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| Web URL(s):
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3873905/pdf/279.pdf#page=38
Last checked: 07/29/2014
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3873905/?report=classic
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http://journals.fcla.edu/jon/article/view/82689/79630
Last checked: 08/17/2018
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2224870a |
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