Tretment Rte/ ft Intervl Repl Re P Rep Ave. DMR Dconil 8 S- Prochlorz EC KWG 9 Byleton Duosn BRC 9 S- DPX 9 + De. 8 DPX 9 Prochlorz EC KWG 9 Fungo PP Tersn 99 DPX 9 + Mnzte Byleton Bnner Lesco 9 PP CGA-9 Lesco 9 MF CGA-9 CGA-9 Mnzte Dconil 8 Prochlorz EC + AD-TGF Check MF AD-TGF fl oz. fl oz. fl oz. oz i. oz oz gm i.. fl oz. oz i. + oz i.. oz i. fl oz. oz i. oz gm i. oz. oz i. +. oz i.. oz fl oz fl oz gm i. 8 gm i. fl oz oz gm i. gm i.. oz i. oz i. fl oz +. oz - oz. oz 8 8 dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy ** * * * o** o** * * *..................... 8.... b b b b b b b be be be cd d Tretments followed by the sme letter(s) re not significntly different from ech other t the % level. Notes: * Indictes slight phytotoxicity (stunting, some discolortion) on / ** Indictes moderte phytotoxicity (incresed stunting, lef necrosis) on /. DOLLAR SPOT FUNGICIDE STUDIES - 98 The 98 dollr spot (Moellerodiscus sp., Lnzi sp.) fungicide studies were conducted t three sites s detiled below. All tretments were pplied to three replicte plots in rndom block design using C~ smll plot spryer operting t PSI nd volume of 8 gl/a. All rtings were tken visully on scle of -9 (= no disese, 9= 9% infection or greter).
Fylking Kentucky Bluegrss Dollr Spot Fungicide Study This study ws pplied curtively on n irrigted, modertely fertilized, bluegrss reserch re t the Hncock Turfgrss Reserch Center in Est Lnsing. Tretments were initited on August 9 to X 9 plots with subsequent pplictions being mde t, nd 8 dy intervls. By the dte of the rtings (Sept. ), the dy nd dy tretments hd been pplied twice nd the 8 dy tretments hd been pplied once. Delry Perennil Ryegrss Dollr Spot Study This study ws conducted on n irrigted, modertely fertilized perennil ryegrss reserch re t the Hncock Turfgrss Reserch Center in E. Lnsing. Tretments were pplied curtively to x plots on August with subsequent pplictions being mde t, nd 8 dy intervls. By the dte of the rting (Sept. ), the dy tretments hd been pplied three times, the dy tretments were pplied twice nd the 8 dy tretments were pplied twice. Glen Gry Annul Bluegrss Benzimidzole Resistnt Dollr Spot Study The benzimidzole - resistnt dollr spot study ws conducted on n irrigted, modertely fertilized nnul bluegrss (Po ~) firwy t the Glen Gry Golf Course in Hollnd, Ohio. Tretments were pplied preventively to x 9 plots on July with subsequent pplictions being mde on, nd 8 dy intervls. By the time rtings were tken (August 8), the dy tretments hd been pplied four times, the dy tretments hd been pplied three times nd the 8 dy tretments hd been pplied twice. As would be expected, the benzimidzole fungicides (Tersn 99, Fungo, nd Clerys ) performed poorly ginst the resistnt dollr spot strins, confirming the results of our lbortory biossy which showed moderte levels of benzimidzole resistnce in the dollr spot isoltes from the Glen Gry course. GLEN GARY ANNUAL BLUEGRASS BENZIMIDAZOLE-RESOSTAMT DOLLAR SPOT FUNGICIDE STUDY - 98 Glen Gry Golf Course, Hollnd, Ohio Disese Rting: l(no disese) - 9(9% infection or greter) Plots rted 8/8/8 Tretment Rte/ ft Intervl Rep. Rep. Rep. Ave DMR Dconil 8 fl oz dy Dconil 8 fl oz dy S- fl oz dy 8-9 fl oz dy S-. fl oz dy 8-. fl oz dy DPX H. oz i dy DPX H. oz i dy DPX H. oz i dy DPX H oz i dy
Tretment Rte/ ft Intervl Rep. Rep. Rep. Ave DMR DPX 9 +. oz i + dy DPX H. oz i Prochlorz EC. fl oz dy Prochlorz EC + fl oz + dy AD-TGF. oz HWG 8. oz i dy KWG 9. oz i. dy KWG 9. oz i. 8 dy Byleton + CH9 oz +. oz 8 dy MF oz dy PP. gm i. dy PP. gm i. dy BRC 9. gm i. dy BRC 9. gm i. dy Bnner. fl oz dy Lesco 8. oz dy Lesco 8. oz dy DPX 9 +. oz i. dy. b Dconil 8 oz i. DPX 9 +. oz i. + dy. b Mnzte. oz i. Dconil 8 oz i. dy. b Actidione-TGF (AD-TGF). oz dy. b Byleton. oz dy. b Byleton. oz 8 dy. b Fungo. oz dy. b Lesco 9. fl oz dy. b Prochlorz EC +. fl oz + dy. bc AD-TGP. oz MF. oz dy. bc CGA 9 8. gm i. dy. bc CGA 9 gm i. dy. bc Tersn 99. oz dy. bc Prochlorz EC. fl oz dy bc Lesco 9. fl oz dy bc Mnzte. oz i. dy. bc CGA 9 gm i. dy. bc CGA 9. gm i. dy. bc Tersn 99. oz dy. bc Check. bc DPX 9. oz i. dy. c Fungo. oz dy. c Duosn. oz dy. c Clery. oz dy. d Clery. oz dy. d Tretments followed by the sme letter re not significntly different from ech other t the % level of significnce.
FLYKINGBLUEGRASSDOLLARSPOT FUNGICIDESTUDY- 98 Hncock Turfgrss Reserch Center MSU, E. Lnsing, MI 88 Disese Rting: l(no disese) - 9(9% infection or greter) Plots rted on 9//8 Tretment Rte/l ft Intervl Rep.l Rep. Rep. Ave DMR Prochlorz EC + fl oz + dy p'c* ** p'c AD-TGF. oz MF oz dy Prochlorz EC+. fl oz + dy *"c ** "(* AD-TGF. oz Tersn 99 oz dy Dconil 8 fl oz dy. bd PP gm il dy * I'" ". bd Bnner fl oz dy. bd MF 9 oz dy. bd MF 9 oz dy. bd Prochlorz EC fl oz dy *. bd Tersn 99 oz dy. bd DPX H. oz dy. bcdef PX H. oz dy. bcdef DPX H. oz dy. bcdef Prochlorz EC. fl oz dy * *. bcdef Byleton + oz + 8 dy. bcdef CH 9. oz BRC 9 + X- gm i. +.% dy. bcdef Lesco 8 oz dy. bcdef MF 9 oz dy. bcdef MF 9 oz dy. bcdef MF oz dy. bcdef Clery's oz dy. bcdef S- 9 fl oz dy. bcdef DPX H '. oz dy. bcdef Vorln oz dy. bcdef MF 9 oz dy. bcdef Clery's oz dy. bcdef Fungo oz dy. bcdef Fungo oz dy. bcdef Chipco 9 Fl oz il dy. bcdef BRC 9 + X- gm il +.% dy. bcdefg Chipco 9 Fl.z i. dy. bcdefg Vorln oz dy. bcdefg MF oz dy. bcdefg S- fl oz dy. defgh S-. fl oz dy. defgh S-. fl oz dy. defgh Byleton oz 8 dy. defgh PP gm i. dy. cdefgh Lesco 8. oz dy. cdefgh MF oz dy. cdefgh Byleton oz dy. cdefgh Dconil 8 fl oz dy. fghi
Tretment Rte/ ft Intervl Rep. Rep. Rep. Ave DMR Chipco 9 WP MF 9 MF 9 Chipco 9 WP MF 9 CGA 9 Lesco 9 Byleton Actidione-TGF (AD-TGF) CGA-9 Lesco q9 Control CGA-9 CGA-9 oz i. oz oz. oz i. oz gm i. fl oz. oz oz gm i. fl oz gm i. 8 gm i. dy dy dy dy dy dy dy dy dy dy dy dy dy "( 8 8 *. efghi. efghi. efghi. ghi. hij. ij.... k. k. k. k. k Notes: Tretments followed by the sme letter(s) re not significntly different from ech other t the % level. * Indictes slight phytotoxicity (yellowing nd/or stunting) ** Indictes moderte phytotoxicity (lef tip browning, stunted growth) DELRAY RYEGRASS DOLLAR SPOT FUNGICIDE STUDY - 98 Hncock Turfgrss Reserch Center MSU, Est Lnsing, MI 88 Disese rting: l(no disese} - 9(9% infection or greter) Plots rted 9//8 Tretment Rte/ ft Intervl Rep. Rep. Rep. Ave DMR Dconil 8 Dconil 8 S- DPX H DPX H DPX H DPX H BRC 9 + X- BRC 9 + X- PP Bnner Lesco 8 Lesco 8 Lesco 9 Chipco 9 WP Chipco 9 FL Vorln MF 9 MF 9 MF 9 MP 9 fl oz fl oz. fl oz. oz i.. oz i.. oz i. oz i. gm i. +. % gm i. +.% gm i. fl oz. oz oz fl oz. oz i.. oz i. oz oz oz oz oz dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy dy
Tretment Rte/ ft Intervl Rep. Rep. Rep. Ave DMR MF oz dy MF oz dy MF oz dy Byleton oz dy Tersn 99 oz dy Tersn 99 oz dy Clery oz dy Fungo oz dy Fungo oz dy 8-. fl oz dy. Byleton oz 8 dy. Byleton + oz + 8 dy. CH 9 WP. oz i. PP gm i. dy. Chipco 9 FL oz i. dy. Vorln oz dy. MF 9 oz dy. MF oz dy. Clery's oz dy. 8-9 f oz dy. Prochorz EC. fl oz dy. Lesco 9 fl oz dy. Prochlorz EC fl oz dy. Prochlorz EC +. fl oz + dy. AD-TGF. oz 8- fl oz dy b Byleton. oz dy b MF 9 oz dy b Prochlorz EC + f oz + dy. bc AD-TGF. oz MF 9 oz dy. bc Chipco 9 WP oz i dy bc CGA9 gm i. dy. cd Actidione TGF oz dy. d (AD-TGF) CGA9 8 gm i. dy. e CGA9 gm i dy 8. e CGA9 gm i dy. e Check. e Tretments followed by the sme letter re not significntly different from ech other t the % level.