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| Publication Type:
| Report |
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| Author(s): | Scott, D. H. |
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| Author Affiliation: | Purdue University |
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| Title: | Evaluation of Fungicides for Control of Leaf Spot in Kentucky Bluegrass, 1985. |
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| Source: | Fungicide and Nematicide Tests. Vol. 41, 1986, p. 157. |
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| Publishing Information: | St. Paul: American Phytopathological Society |
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| Keywords: | TIC Keywords: Poa pratensis; Leaf spot; Fungicides
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| Abstract/Contents: | "Fungicide treatments were evaluated on a stand of mixed Kentucky bluegrass in a fairway at the Elks Country Club, West Lafayette, IN. Treatments were applied to 1 m x 2 m plots arranged in a randomized complete block design with 3 replications. Fungicides were applied with a hand held CO2 pressurized sprayer at 20 psi with a 9504E Tee Jet nozzle tip at a rate of 2 gal/1000 sq ft. Untreated control plots were sprayed with water only. All treatments were first applied on 13 May. Actidione TGF and Daconil 2787 were applied weekly, a total of 9 applications; the last being 8 Jul. All other treatments were applied every 21 days, a total of 3 applications; the last being 24 Jun. Lesion counts were made on 31 May, 10, 21 Jun, 1, 15, 29 Jul, 12, 19 Aug, 3 and 18 Sept by counting the number of lesions on 25 leaves randomly selected from each plot. Apr was dry and warm. May and early Jun were wet, while late Jun, Jul, and early Aug were very dry. Late Aug and Sep were slightly above normal in percipitation. Temperatures from May thru Sep were slightly cooler than normal. Leaf spot development was moderate in May and moderately heavy in late June. Thereafter, disease development was light to very light. All treatments had significantly less leaf spot than the untreated control on 21 Jun which was the rating date with the highest level of infection. Hoever, the lowest rate of DPX H6573 did not give an acceptable level of control. The 0.34 oz rate of ACtidione TGF was tested alone as a control for the Prochloraz + Actidione TGF treatments. As expected, this low rate, on a 21 day schedule, did not control leaf spot, and the addition of this rate to 1.5 or 3.0 oz Prochloraz did not improve the efficacy of Prochloraz by itself at the 3.0 oz rate. No phytotoxicity was observed." |
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| Language: | English |
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| References: | 0 |
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| Note: | Table |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Scott, D. H. 1986. Evaluation of Fungicides for Control of Leaf Spot in Kentucky Bluegrass, 1985.. Fungicide Nematicide Tests. 41:p. 157. |
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