Application Interval (Days) Turf areas in partially

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1 Algae (various species; primarily blue-green algae or cyanobacteria) All grasses Most prevalent on putting greens & other turf mowed excessively low. Anthracnose leaf blight and Turf areas in partially Daconil Action chlorothalonil + acylbenzolar-s-methyl F shaded, damp locations become weak and begin to Daconil Weather Stik chlorothalonil 6F preventive thin. Traffic and closemowing curative enhance potential for algae development. Daconil Zn chlorothalonil 4.16 F preventive Long-term overcast, rainy curative weather periods encourage Daconil Ultrex, Chlorothalonil DF chlorothalonil 82.5%WDG, DF preventive algae on putting greens curative These algae are commonly green or brown in color and Renown chlorothalonil + azoyxystrobin 5.16SC can be sheet-like, leaf-like, Spectro 90 chlorothalonil + thiophanate methyl 90WDG or cushion-like in appearance. Due to their high Disarm C chlorothalonil + fluoxastrobin 4.25 SC water content, algae are often Reserve chlorothalonil + triticonazole 4.8SC quite slippery. Algae growth may become so prolific that Secure fluazinam 4.17 SC they cover turf plants and Xzemplar fluxapyroxad 2.47SC inhibit water penetration. Fore, Dithane, Pentathlon, mancozeb 80WP Improve air circulation and light exposure. Improve Protect DF, mancozeb 75DF drainage and reduce Fore F, mancozeb 4LF irrigation frequency and amount. Reduce freely Junction mancozeb + copper hydroxide 60DF available nitrogen at site. On Kocide copper hydroxide 53.8% 16 oz in 5 gal water variable putting greens, verticut lightly, aerify, and/or Maneb plus Zinc maneb (37%)+ zinc F topdress to disrupt and dry note: chlorothalonil formulations have maximum use rates in effect that depends on site - see current labels for details. algal mats. Best curative note: Fore mancozeb formulations now have restrictions on use rates and maximum seasonal rates see current label for details. results are with 5 gal water note: fungicides are most effective when used preventative. Fungicides containing copper hydroxide may be phytotoxic; read label carefully and per 1,000 sq.ft. applied for 3 use precautions. consecutive weeks when air temps. are at least 85 F. The causal fungus can infect leaves, sheaths, and tillers. Heritage azoxystrobin 50WDG Heritage TL azoxystrobin 0.8TL

2 29 Anthracnose basal rot (Colletotrichum cereale) Anthracnose leaf blight and Anthracnose basal rot (Colletotrichum cereale) Creeping bentgrass and Annual Bluegrass primarily In creeping bentgrass and Heritage G azoxystrobin 0.31G 2-4 lb Poa annua, stolons and crowns also may be rotted Briskway azoxystrobin + difenoconazole 1.67 SC (anthracnose basal rot). Leaf infection appears as reddishbrown to brown lesions that Headway azoxystrobin + propiconazole 1.4ME are often surrounded by a Headway G azoxystrobin + propiconazole 1.06G lb 14 yellow halo. Lesion size may span the blade width and Daconil Action chlorothalonil + acylbenzolar-s-methyl F often one lesion will cause complete yellowing of a Daconil Zn chlorothalonil 4.16F pre-disease blade. Tiller infection results > post-disease in stem girdling and the Daconil WeatherStik, Chlorothalonil chlorothalonil 6 F pre-disease subsequent appearance of 720 SFT, small, yellow patches of turf. > pre-disease The causal fungus can Daconil Ultrex, Chlorothalonil DF chlorothalonil 82.5% WDG, DF pre-disease sometimes be observed with > post-disease a hand lens. It will appear as Renown chlorothalonil + azoyxystrobin 5.16SC dark, cushion-like reproductive structures Disarm C chlorothalonil + fluoxastrobin 4.25SC (acervuli) with black spines chlorothalonil + potassium phosphite 5.27 SC 8 14 (setae) extending from the Headway chlorothalonil + propiconazole 4.3 SC margin of the cushion. Plants Instrata chlorothalonil + propiconazole + fludioxonil with anthracnose basal rot SC may have deep-seated Enclave chlorothalonil + iprodione + thiophanate methyl infections that are not readily + tebuconazole 5.3 SC diagnosed with only a hand lens. Avoid stressed turf caused by consistent low mowing and rolling of greens, other pests, fertility imbalances, or moisture extremes. Thatch removal will be helpful. In bentgrass greens, manage localized dry spots to prevent anthracnose basal rot from developing. Consyst chlorothalonil + thiophanate methyl 67WDG Spectro 90 chlorothalonil + thiophanate methyl 90WDG Rubigan AS fenarimol AS Secure fluazinam 4.17 SC Medallion fludioxonil 50WP Medallion fludioxonil 1.04 SC Disarm fluoxastrobin 4SC Disarm G fluoxastrobin 0.25G lb Systar flutolanil + thiophanate methyl 80WDG /36 iprodione + thiophanate methyl 3.8F Interface iprodione + trifloxystrobin 2.27 SC Duosan mancozeb + thiophanate methyl Tourney metconazole 50WDG Eagle myclobutanil 20 EW Affirm polyoxin 11.3%WDG Endorse polyoxin 2.5WP Banner Maxx, Propiconazole 14.3, propiconazole 1.3 ME

3 30 Brown Ring Patch (Rhizoctonia circinata var. circinata) Brown Patch, Rhizoctonia Blight Insignia pyraclostrobin 20 WDG Honor Intrinsic pyraclostrobin + boscalid 28G Pillar G pyraclostrobin + triticonazole 0.81G 3.0 lb Torque tebuconazole 3.6 SC Mirage Stressgard tebuconazole 2 SC thiophanate methyl 50WSB F thiophanate methyl 46%F thiophanate-methyl 41%F 2-8 fl thiophanate methyl 50WP Bayleton triadimefon 50 WSP, 41.7 Flo Compass trifloxystrobin 50WDG Armada trifloxystrobin + triadimefon 50WP Tartan trifloxystrobin + triadimefon 2SC Trinity triticonazole 1.7SC Triton triticonazole 70WDG Triton Flo triticonazole 3F Affecting Poa annua or Poa trivialis overseedings during late spring/ early fall mild weather conditions. Symptoms resemble Yellow Patch, but the causal agent is more closely related to R. zeae and R. oryzae than to R. cerealis. Yellow patches or rings of affected turf occur and may be somewhat depressed at the margins. Infections occur on leaf sheaths in the crown region, with no leaf lesions. Grass is killed in circular to irregular areas that may Heritage azoyxystrobin 50%WG Heritage TL azoyxystrobin 0.8TL Briskway azoxystrobin + difenoconazole 1.67 SC Heritage G azoyxystrobin 0.31 G 2-4 lb Headway azoyxystrobin + propiconazole 1.4ME Renown chlorothalonil + azoyxystrobin 5.16SC Reserve chlorothalonil + triticonazole 4.8SC Secure fluazinam 4.17 SC Medallion fludioxonil 50%WP Medallion fludioxonil 1.04 SC Tourney metconazole 50WDG Affirm polyoxin 11.3%WDG 0.88 oz 7-14 Endorse polyoxin 2.5WP Insignia Intrinsic pyraclostrobin 2.08SC Honor Intrinsic pyraclostrobin + boscalid 28WDG Pillar G pyraclostrobin + triticonazole 0.81 G 3.0 lb 28 Mirage Stressgard tebuconazole 2 SC Trinity triticonazole 1.7SC Triton Flo triticonazole 3F Xzemplar fluxapyroxad 2.47 SC Heritage azoxystrobin 50%WG Heritage TL azoxystrobin 0.8 TL

4 31 (Rhizoctonia solani) bluegrass creeping bentgrass fescues ryegrass Brown Patch, Rhizoctonia Blight (Rhizoctonia solani) expand to several feet in Briskway azoxystrobin + difenoconazole 1.67 SC diameter. In close-cut cool Heritage G azoxystrobin 0.31G 2-4 lb season grasses, a darkened Headway azoxystrobin + propiconazole 1.4ME smoke ring border may be apparent. Brown patch in Headway G azoxystrobin + propiconazole 1.06G 2-4 lb cool season grasses occurs Terraneb 65WP chloroneb 65WP during humid weather at Terraneb SP chloroneb 2.9F >75 o F. High N, thatch Daconil Action chlorothalonil + acylbenzolar-s-methyl F buildup, and excessive Daconil Weather Stik, chlorothalonil 6F pre-disease moisture favor disease. Chlorothalonil 720 SFT, post-disease Maintain adequate fertility. Avoid excess fast-release nitrogen. Irrigate deeply. Reduce thatch note: chlorothalonil formulations have new maximum use rates that depend on site - see new labels for details note: Fungicides containing copper hydroxide may be phytotoxic; read label carefully & use precautions. Daconil Zn, Chlorothalonil 500 Zn, chlorothalonil 4.17F pre-disease post-disease Daconil Ultrex, Chlorothalonil DF chlorothalonil 82.5% WG,DF pre-disease post-disease Renown chlorothalonil + azoyxystrobin 5.16SC chlorothalonil + fenarimol F Disarm C chlorothalonil + fluoxastrobin 4.25 SC Vitalonil chlorothalonil + potassium phosphite 5.27SC Concert chlorothalonil + propiconazole 4.3SC Consyst chlorothalonil + thiophanate methyl 67WDG Spectro 90 chlorothalonil + thiophanate methyl 90WDG Reserve chlorothalonil + triticonazole 4.8SC Enclave chlorothalonil + iprodione + thiophanate methyl tebuconazole 5.3 SC Rubigan AS fenarimol 11.6% AS Secure fluazinam 4.17 SC Medallion fludioxonil 50%WP Medallion fludioxonil 1.04 SC Disarm fluoxastrobin 4SC Disarm G fluoxastrobin 0.25G lb Prostar flutolanil 70%WP, WDG Systar flutolanil + thiophanate methyl Xzemplar fluxapyroxad 2.47 SC Chipco iprodione 50%WP Chipco 26GT, Iprodione Pro, iprodione 2SC /36 iprodione + thiophanate methyl 3.8F Interface iprodione + trifloxystrobin 2.27 SC Fore, Dithane, Pentathlon, mancozeb 80%WP Protect DF, mancozeb 75%DF Junction mancozeb + copper hydroxide 60DF Maneb plus Zinc maneb (37%)+ zinc F Tourney metconazole 50WDG

5 32 Cercospora Leaf Spot (Cercospora fusimaculans) St. Augustinegrass Copper Spot (Gloeocercospora sorghi) Creeping bentgrass Eagle, Myclobutanil 20EW myclobutanil 20 EW Affirm polyoxin 11.3%WDG Endorse polyoxin 2.5WP Banner Maxx, Propiconazole 14.3, propiconazole 1.3ME Insignia pyraclostrobin 20 WDG Honor Intrinsic pyraclostrobin + boscalid 28G Pillar G pyraclostrobin + trticonazole 0.81G 3.0 lb Mirage Stressgard tebuconazole 2 SC thiophanate methyl 50WSB F thiophanate methyl 46%F thiophanate methyl 50%WP F thiophanate methyl 41%F Spotrete thiram 4F Bayleton triadimefon 50%WSP, 4.15F Compass trifloxystrobin 50%WDG Tartan trifloxystrobin + triadimefon 2SC Armada trifloxystrobin + triadimefon 50WP Triton triticonazole 70WDG Triton Flo triticonazole 3F Trinity triticonazole 1.7SC Curalan vinclozolin 50 WG or DF note: Fore mancozeb formulations now have restrictions on use rates and maximum seasonal rates see current label for details. Brown to purple leaf spots in patches 2-3" in diameter. In None available. Fungicides used to control other leaf spot diseases will provide suppression. high disease severity, entire leaves will yellow, wither and die. Warm, humid weather favors disease incidence. Confused with gray leaf spot. N may reduce disease. Water deeply only when needed in mornings. 'Bitter-blue' selections are more resistant. Small bronze patches about the size of dollar spot occur in humid but mild temperatures. A minor disease in SC, nevertheless it does occasionally occur Manage moisture so that Daconil Ultrex chlorothalonil 82.5 WDG Daconil Action chlorothalonil + acylbenzolar-s-methyl F Chlorothalonil DF chlorothalonil 82.5 DF Daconil WeatherStik, Chlorothalonil chlorothalonil 6F SFT, Daconil Zn, Chlorothalonil 500 Zn, chlorothalonil + Zn 4.16F 4-5.5;6-8 14

6 33 Curvularia Blight (Curvularia spp.) Bermudagrass Dead Spot (Ophiosphaerella agrostis) Creeping bentgrass, rarely Poa trivialis and bermudagrass greens leaf wetness periods are Renown chlorothalonil + azoyxystrobin 5.16SC limited. Limit soluble N Disarm C chlorothalonil + fluoxastrobin 4.25SC fertilization. Concert chlorothalonil + propiconazole 4.3SC Consyst chlorothalonil + thiophanate methyl 67WDG Spectro 90 chlorothalonil + thiophanate methyl 90WDG Rubigan AS fenarimol 1AS Systar flutolanil + thiophanate methyl 80WDG /36 iprodione + thiophanate methyl 3.8F Protect DF mancozeb 75DF Fore, Dithane, mancozeb 80WP Fore F, mancozeb 4LF Junction mancozeb + copper hydroxide 60DF Tourney metconazole 50WDG Eagle myclobutanil 20EW , TM 4.5F, thiophanate methyl 50WP, 4F, 4.5F plus thiophanate methyl 2F TM 85WDG thiophanate methyl 85WDG G thiophanate methyl 2G lb 14 Spotrete thiram 4F Bayleton triadimefon 50WSP, 4.15 F note: Fore mancozeb formulations now have restrictions on use rates and maximum seasonal rates see current label for details. Usually associated with 3336F thiophanate methyl 41%F stressed plants from heat, excess moisture, drought, 3336 WP thiophanate methyl 50WP compaction, or other causes. 26/36 iprodione + trifloxystrobin 2.27 SC Alleviate stress conditions Small red or bronze spots Headway azoyxystrobin + propiconazole 1.4ME develop during late spring or Headway G azoxystrobin + propiconazole 1.06G 2-4 lb early fall that resemble ball Emerald boscalid 70WG marks. Spots die in the center Spectro 90 chlorothalonil + thiophanate methyl 90WDG and become tan, with black pepper-like pseudothecia Medallion fludioxonil 50% WP fruiting bodies developing. Medallion fludioxonil 1.04 SC May be mistaken for dollar spot initially. Generally a Insignia pyraclostrobin 20 WDG problem on young stands of bentgrass (1-4 yrs age). Honor Intrinsic pyraclostrobin + boscalid 28WG Fertilize with ammonium sulfate to suppress the Pillar G pyraclostrobin + triticonazole 0.81G 3.0 lb disease F, 3336 plus thiophanate methyl 4F, 2F thiophanate methyl 50WP G thiophanate methyl 2G 6-9 lb 14 Dollar Spot On fine textured grasses, Headway azoxystrobin (5.73%) + propiconazole 1.4ME

7 34 (Sclerotinia homoeocarpa) bahiagrass bermudagrass centipedegrass creeping bentgrass ryegrass rough bluegrass St. Augustinegrass tall fescue zoysiagrasses spots appear 1-2" in diameter. Headway G azoxystrobin + propiconazole 1.06G 2-4 lb On tall or coarse grasses, Briskway azoxystrobin + difenoconazole 1.67 SC patches may reach 5 or more Emerald boscalid 70WDG inches in diameter. Often, Daconil Action chlorothalonil + acylbenzolar-s-methyl 6.112F straw-colored lesions move in from leaf margins or occur as Daconil WeatherStik, Chlorothalonil chlorothalonil 6F pre-disease distinct bands across the leaf. 720 SFT, pre-disease Most active during o F in spring and fall. Moisture post-disease from fog, dew, or irrigation Daconil Zn, Chlorothalonil 500 Zn, chlorothalonil 4.16F pre-disease initiates disease. Low soil moisture, thatch, low N and pre-disease K favor disease post-disease Avoid N deficiency. Reduce Chlorothalonil DF chlorothalonil 82.5% DF pre-disease leaf wetness periods by altering irrigation timing pre-disease Avoid thatch buildup. Wipe heavy dew off in mornings. note: chlorothalonil formulations have maximum use rates in effect that depends on site. note: Fungicides containing copper hydroxide may be phytotoxic; read label carefully and use precautions post-disease Daconil Ultrex chlorothalonil 82.5 WDG Renown chlorothalonil + azoyxystrobin 5.16SC Disarm C chlorothalonil + fluoxastrobin 4.25SC Vitalonil chlorothalonil + potassium phosphite 5.27 SC Concert chlorothalonil + propiconazole 4.3SC pre-disease pre-disease post-disease Consyst chlorothalonil + thiophanate methyl 67WDG Spectro 90 chlorothalonil + thiophanate methyl 90WDG Reserve chlorothalonil + triticonazole 4.8SC Enclave chlorothalonil + iprodione + thiophanate methyl tebuconazole 5.3 SC Rubigan AS fenarimol 1AS Secure fluazinam 4.17 SC DisArm fluoxastrobin 4SC Disarm G fluoxastrobin 0.25G lb Systar flutolanil + thiophanate methyl 80WDG Xzemplar fluxapyroxad 2.47 SC Chipco 26GT, Iprodione Pro, iprodione 2F, 2SC /36 iprodione + thiophanate methyl 3.8F Interface iprodione + trifloxystrobin 2.27 SC Protect DF mancozeb 75DF Fore, Dithane, Pentathlon, mancozeb 80WP Fore Flo mancozeb 4LF Junction mancozeb + copper hydroxide 60DF Maneb plus Zinc maneb (37%)+ zinc F Tourney metconazole 50WDG Eagle myclobutanil 20 EW

8 35 Banner Maxx propiconazole 1.3ME Insignia pyraclostrobin 20WDG (suppression) (suppression) Honor Intrinsic pyraclostrobin + boscalid 28WG Pillar G pyraclostrobin + triticonazole 0.81G 3.0 lb Mirage Stressgard tebuconazole 2 SC WP thiophanate methyl 50WP F, 3336 plus thiophanate methyl 4F,2F TM 85WDG thiophanate methyl 85WDG G thiophanate methyl 2G lb 14 Spotrete thiram 75WDG Bayleton triadimefon 50WSP, 4.15F Tartan trifloxystrobin + triadimefon 2SC Armada trifloxystrobin + triadimefon 50WP Trinity triticonazole 1.7SC Triton Flo triticonazole 3F Triton triticonazole 70WDG Curalan vinclozolin 50WP or DF note: Fore mancozeb formulations now have restrictions on use rates and maximum seasonal rates see current label for details. Fairy Ring (Agrocybe, Chlorophyllum, Lycoperdon, Marasmius, Tricholoma spp., + other mushroom fungi). All grasses Irregularly sized circular to semi-circular bands of lush green turf become apparent. Turf within circular area may decline, turn brown and thin. Toxins may be involved, but hydrophobic soil is a major problem. Mushrooms may be associated with the rings. Rings may persist for years. Difficult to control. Plugging or aerating to allow more water and fertilizer to reach the roots may help. Some surfactants have helped water penetration. Heritage azoxystrobin 50WDG Heritage TL azoxystrobin 0.8 TL 2 28 Heritage G azoyxystrobin 0.31G 2-4 lb Briskway azoxystrobin + difenoconazole 1.67 SC Headway azoxystrobin + propiconazole 1.4ME Headway G azoxystrobin + propiconazole 1.06G 2-4 lb Xzemplar fluxapyroxad 2.47 SC Disarm C chlorothalonil + fluoxastrobin 4.25SC Disarm fluoxastrobin 4SC Disarm G fluoxastrobin 0.25G lb 28 Prostar flutolanil 70WP, 70 WDG Systar flutolanil + thiophanate methyl 80WDG Lexicon fluxapyroxad + pyraclostrobin 4.17SC Tourney metconazole 50WDG Affirm polyoxin 11.3%WDG Endorse polyoxin 2.5WP 4 7 Insignia pyraclostrobin 20WDG Honor Intrinsic pyraclostrobin + boscalid 28WG Pillar G pyraclostrobin + triticonazole 0.81G 3.0 lb Torque tebuconazole 3.6 F

9 36 Microdochium Patch and Pink Snow Mold (Microdochium nivale) Cool season grasses, including bentgrass bluegrasses ryegrasses, and fescues; also nonoverseeded bermudagrass putting greens and zoysia greens Mirage Stressgard tebuconazole 2 SC Fusarium Patch: Begins in late fall and early winter in wet, humid weather as small, water-soaked spots of 2 inches up to 8 inches in diameter. Patches may appear wet or slimy. Gray to pinkish colored mycelium may be noticeable in patches. Snow is not required for development of Fusarium Patch. The disease may kill grasses in these patches; frequently mis-diagnosed as cool weather Pythium. Pink Snow Mold: Same causal agent as Fusarium Patch, but the disease occurs under snow cover. Preventive fungicide applications must be made prior to persistent snow cover. Avoid excess nitrogen fertilization, irrigate infrequently but thoroughly, avoiding light frequent irrigations. Protect newly seeded areas that are highly susceptible. Reduce shade and increase air movement around greens. note: chlorothalonil formulations have new maximum use rates in effect that depends on site. note: Fungicides containing copper hydroxide may be phytotoxic; read label carefully and use precautions. Bayleton triadimefon 50DF,4.15F Tartan (2ee SC) triadimefon + trifloxystrobin Heritage azoxystrobin 50WDG Heritage TL azoxystrobin 0.8 TL Heritage G azoyxystrobin 0.31G 2-4 lb Briskway azoxystrobin + difenoconazole 1.67 SC Headway azoxystrobin + propiconazole 1.4ME Headway G azoxystrobin + propiconazole 1.06G 2-4 lb Renown chlorothalonil + azoyxystrobin 5.17SC Disarm C chlorothalonil + fluoxastrobin 4.25SC Concert chlorothalonil + propiconazole 4.3SC Instrata chlorothalonil + propiconazole + fludioxanil SC Consyst chlorothalonil + thiophanate methyl 67WDG 6-8 Single application Spectro 90 chlorothalonil + thiophanate methyl 90WDG Reserve chlorothalonil + triticonazole 4.8SC Enclave chlorothalonil + iprodione + thiophanate methyl tebuconazole 5.3 SC Daconil Action chlorothalonil + acylbenzolar-s-methyl 6.112F Daconil WeatherStik, Chlorothalonil chlorothalonil 6F SFT, Daconil Zn, Chorothalonil 500 Zn, chlorothalonil 4.17F Daconil Ultrex chlorothalonil 82.5%WDG Chlorothalonil DF chlorothalonil 82.5 DF Rubigan AS fenarimol 1AS applications Secure fluazinam 4.17 SC Medallion fludioxonil 50%WP Medallion fludioxonil 1.04 SC Disarm fluoxastrobin 4SC Disarm G fluoxastrobin 0.25G lb Systar flutolanil + thiophanate methyl 80WDG Xzemplar fluxapyroxad 2.47 SC Chipco 26GT, iprodione pro, Ipro iprodione 2F, 2SC applications 2SE, 26/36 iprodione + thiophanate methyl 3.8F Interface iprodione + trifloxystrobin 2.27 SC Protect DF mancozeb 75DF wk Fore, Dithane, Penthathlon, mancozeb 80WP Fore Flo mancozeb 4LF Junction mancozeb + copper hydroxide 60DF

10 37 Gray Leaf Spot (Pyricularia grisea) bahiagrass bermudagrass centipedegrass ryegrass St. Augustinegrass tall fescue Tourney metconazole 50WDG Late fall Eagle myclobutanil 20 EW Fall/winter Maneb + zinc maneb (37%)+ zinc F Junction mancozeb (15%) + copper hydroxide (46%) Affirm polyoxin 11.3%WDG Endorse polyoxin 2.5WP Banner Maxx, propiconazole 1ME 2-4 Single application Insignia pyraclostrobin 20WDG Honor Intrinsic pyraclostrobin + boscalid 28WG Pillar G pyraclostrobin + triticonazole 0.81G 3.0 lb 28 Mirage Stressgard tebuconazole 2 SC Spotrete F thiram 4F 3-12 Fall and spring Spotrete 75WDG thiram 75WDG 3-8 Fall and spring 3336, 3336 plus thiophanate methyl 4F, 2F, 50WP TM 85WDG thiophanate methyl 85WDG Bayleton triadimefon 50WSP,4.15F Compass trifloxystrobin 50WG Tartan trifloxystrobin+ triadimefon 2SC 2 fall/ early spring Armada trifloxystrobin + triadimefon 50WP 1.2 fall/ early spring Trinity triticonazole 1.7SC Triton triticonazole 70WDG Late fall Triton Flo triticonazole 3F Curalan vinclozolin 50EG note: Fore mancozeb formulations now have restrictions on use rates and maximum seasonal rates see current label for details. Small brown to ash-colored leaf spots with purple to brown margins. Lesions become covered with the gray, velvety, fungal mycelium of Pyricularia grisea. In severe cases leaves appear scorched. Prevalent during rainy, summer months. Mainly on St. Augustinegrass, but recently epidemics have occurred on tall fescue and perennial ryegrass. Avoid excess N. Irrigate deeply in early morning. Reduce traffic. Mostly a problem on newly planted St. Augustinegrass, especially in shade, or atrazine-treated St. Heritage azoxystrobin 50WG ; no more than 2 sequential treatments Heritage TL azoxystrobin 0.8 TL Heritage G azoyxystrobin 0.31G 2-4 lb Briskway azoxystrobin + difenoconazole 1.67 SC Headway azoxystrobin + propiconazole 1.4ME Headway G azoxystrobin + propiconazole 1.06G 2-4 lb Daconil Action chlorothalonil +acylbenzolar-s-methyl Daconil WeatherStik, Chlorothalonil chlorothalonil 6F pre-disease 720 SFT, post-disease Daconil Zn, Chlorothalonil 500 Zn, chlorothalonil 4.16%F pre-disease post-disease Daconil Ultrex chlorothalonil 82.5%WDG pre-disease post-disease Chlorothalonil DF chlorothalonil 82.5 DF Renown chlorothalonil + azoyxystrobin 5.16SC TwoSome Flowable Fungicide chlorothalonil + fenarimol

11 38 "Helminthosporium" Leaf Spot/ Melting Out (Bipolaris, Drechslera spp.) bahiagrass Augustinegrass. Disarm C chlorothalonil + fluoxastrobin 4.25 SC Vitalonil chlorothalonil + potassium phosphite 5.27 SC Concert chlorothalonil + propiconazole 4.3SC note: chlorothalonil formulations have new maximum use rates in effect that depends on site. Symptoms include leaf spotting and 'melting-out' phases. Leaves have circular to elongated, purplish or brown spots with strawcolored centers on older lesions. Numerous lesions Instrata chlorothalonil + propiconazole + fludioxanil SC Consyst chlorothalonil + thiophanate methyl 67WDG Spectro 90 chlorothalonil + thiophanate methyl 90WDG Enclave chlorothalonil + iprodione + thiophanate methyl tebuconazole 5.3 SC Medallion fludioxanil 50WP Medallion fludioxonil 1.04 SC Disarm fluoxastrobin 4SC Disarm G fluoxastrobin 0.25G lb Fore, Dithane, Pentathlon, mancozeb 80WP 8 14 Protect DF, mancozeb 75DF Fore Flo, mancozeb 4LF Duosan mancozeb + thiophanate methyl Tourney metconazole 50WG Eagle myclobutanil 20EW Affirm polyoxin 11.3%WDG Endorse polyoxin 2.5WP Banner Maxx, propiconazole 1.3ME Insignia pyraclostrobin 20WDG Honor Intrinsic pyraclostrobin + boscalid 28WG Pillar G pyraclostrobin + triticonazole 0.81G 3.0 lb Mirage Stressgard tebuconazole 2 SC thiophanate methyl 50WP, 4F plus thiophanate methyl 2F TM 85WDG thiophanate methyl 85WDG Bayleton triadimefon 50WSP, 4.15 Flo Compass trifloxystrobin 50WDG Tartan trifloxystrobin + triadimefon 2SC Armada trifloxystrobin + triadimefon 50WP note: Fore mancozeb formulations now have restrictions on use rates and maximum seasonal rates see current label for details. Heritage azoxystrobin 50WDG Heritage TL azoxystrobin 0.8 TL Heritage G azoyxystrobin 0.31G 2-4lb Briskway azoxystrobin + difenoconazole 1.67 SC Headway azoxystrobin + propiconazole 1.4ME Headway G azoxystrobin + propiconazole 1.06G 2-4 lb 14-21

12 39 bermudagrass bluegrass creeping bentgrass ryegrass St. Augustinegrass zoysiagrasses cause leaves to turn reddishbrown, Daconil Action chlorothalonil + acylbenzolar-s-methyl 6.112F then yellow, and die. Daconil WeatherStik, Chlorothalonil chlorothalonil 6F pre-disease Sheath and crown rot may be 720 SFT, post-disease present. Ryegrass, bluegrasses (Poa pratensis post-disease and P. trivialis) and Daconil Zn, Chlorothalonil 500 Zn, chlorothalonil 4.16F pre-disease bermudagrass are most post-disease susceptible. Most prevalent post-disease when temperatures range from o F during mild Daconil Ultrex chlorothalonil 82.5% WDG periods of spring and fall Maintain a balanced fertility. Renown chlorothalonil + azoyxystrobin 5.16SC Irrigate deeply in the Disarm C chlorothalonil + fluoxastrobin 4.25SC mornings. Raise mower height during disease Vitalonil chlorothalonil + potassium phosphite 5.27SC outbreaks. Reduce thatch. Concert chlorothalonil + propiconazole 4.25SC note: chlorothalonil Instrata chlorothalonil + propiconazole +fludioxanil formulations have new 3.6SC maximum use rates in effect Consyst chlorothalonil + thiophanate methyl 67WDG that depends on site. Spectro 90 chlorothalonil + thiophanate methyl 90WDG note: Fungicides containing copper hydroxide may be Reserve chlorothalonil + triticonazole 4.8SC phytotoxic; read label Medallion fludioxonil 50%WP carefully and use precautions. Medallion fludioxonil 1.04 SC Xzemplar fluxapyroxad 2.47 SC Disarm fluoxastrobin 4SC Disarm G fluoxastrobin 0.25 G lb Systar flutolanil + thiophanate methyl 80WDG Chipco 26GT, iprodione pro, iprodione 2F, 2SC /36 iprodione + thiophanate methyl 3.8F Interface iprodione + trifloxystrobin 2.27 SC Duosan mancozeb + thiophanate methyl Fore, Dithane, Penthathlon, mancozeb 80WP Protect DF, mancozeb 75DF Fore Flo, mancozeb 4LF Junction mancozeb + copper hydroxide 60DF Maneb plus Zinc maneb (37%)+ zinc F Eagle myclobutanil 20 EW Affirm polyoxin 11.3%WDG Endorse polyoxin 2.5WP Banner Maxx, propiconazole 1.3ME Insignia pyraclostrobin 20WDG Honor Intrinsic pyraclostrobin + boscalid 28WG

13 40 Large Patch (brown patch in warm season grasses; Zoysia patch, large patch of zoysia) (Rhizoctonia solani AG 2, 2 LP) zoysiagrass bermudagrass St. Augustinegrass Centipedegrass Seashore Paspalum Pillar G pyraclostrobin + triticonazole 0.81G 3.0 lb thiophanate methyl 50WP, 4F plus thiophanate methyl 2F G thiophanate methyl 2G 6-9lb 14 Spotrete thiram 4F Compass trifloxystrobin 50WDG Tartan trifloxystrobin + triadimefon 2SC Armada trifloxystrobin + triadimefon 50WP Triton triticonazole 70WDG Triticonazole triticonazole 1.7SC With Large Patch disease of warm season grasses, leaf fascicles pull easily from plant due to rot at leaf base. Initial infections are in the fall, but symptoms are usually most apparent in the spring as grasses emerge from winter dormancy. Maintain adequate fertility. Avoid excess fast-release nitrogen. Irrigate deeply. Reduce thatch. Correct compaction and areas of poor drainage Curalan vinclozolin 50WP or DF note: Fore mancozeb formulations now have restrictions on use rates and maximum seasonal rates see current label for details. Heritage azoxystrobin 50WDG (1, 2 or 3 applications in fall Heritage TL azoxystrobin 0.8TL Heritage G azoyxystrobin 0.31G 2-4lb Briskway azoxystrobin + difenoconazole 1.67 SC Headway azoyxystrobin + propiconazole 1.4ME Headway G azoxystrobin + propiconazole 1.06G 2-4 lb Terraneb 65WP chloroneb 65 WP Terraneb SP chloroneb 2.9F Renown chlorothalonil + azoyxystrobin 5.16SC Disarm C chlorothalonil + fluoxastrobin 4.25SC Consyst chlorothalonil + thiophanate methyl 67WDG Reserve chlorothalonil + triticonazole 4.8SC Secure fluazinam 4.17 SC Disarm fluoxastrobin 4SC Disarm G fluoxastrobin 0.25G lb Prostar flutolanil 70WP, 70 WDG Xzemplar fluxapyroxad 2.47 SC Chipco 26GT, iprodione pro, iprodione 2F, 2SC /36 iprodione + thiophanate methyl 3.8F Interface iprodione + trifloxystrobin 2.27 SC Tourney metconazole 50WG Eagle myclobutanil 20 EW 2.4 Apply in fall before dormancy, repeat 28 days Affirm polyoxin D 11.3%WDG Endorse polyoxin D 2.5WP

14 41 Pink Patch/Cream Leaf Blight (Limonomyces roseipellis) Cool season grasses, but occasionally on warm season such as centipededgrass or bermudagrass Banner Maxx, propiconazole 1.3ME application in early fall, prior to symptoms Insignia pyraclostrobin 20WG Honor Intrinsic pyraclostrobin + boscalid 28WG Pillar G pyraclostrobin + triticonazole 0.81G 3.0 lb Mirage Stressgard tebuconazole 2 SC , thiophanate methyl 4F, 50WP to plus thiophanate methyl 2F Systar thiophanate methyl +flutolanil 80WDG Mats of mycelium that aggregate in clusters occur on leaves during cool, humid weather. Patches of affected turf range in size up to 6-8 inches diameter and has a pink color. Not severely damaging to turf, but the disease is unsightly. The causal agent is a basidiomycete with clamp connections visible on hyphae when viewed microscopically. Judiciously increase nitrogen fertility. Irrigate infrequently but thoroughly to prevent drought stress. Trinity triticonazole 1.7SC Triton triticonazole 70WDG Triton Flo triticonazole 3SC Heritage azoxystrobin 50WDG Heritage TL azoxystrobin 0.8TL Heritage G azoyxystrobin 0.31G 2-4lb Briskway azoxystrobin + difenoconazole 1.67 SC Headway azoyxystrobin + propiconazole 1.4ME Renown chlorothalonil + azoyxystrobin 5.16SC Disarm C chlorothalonil + fluoxastrobin 4.3SC Concert chlorothalonil + propiconazole 4.3SC Reserve chlorothalonil + triticonazole 4.8SC Secure fluazinam 4.17 SC Disarm fluoxastrobin 4SC Disarm G fluoxastrobin 0.25G lb Prostar flutolanil 70WP, 70WDG Systar flutolanil + thiophanate methyl 80WDG Interface iprodione + trifloxystrobin 2.27 SC 4 14 Banner Maxx, propiconazole 1.3ME Insignia pyraclostrobin 20WG Honor Intrinsic pyraclostrobin + boscalid 28WG Pillar G pyraclostrobin + triticonazole 0.81G 3.0 lb Mirage Stressgard tebuconazole 2 SC Compass trifloxystrobin 50WDG Tartan trifloxystrobin + triadimefon 2SC Armada trifloxystrobin + triadimefon 50WP Trinity triticonazole 1.7 SC Curalan vinclozolin 50EG Powdery Mildew White, powdery like growth Heritage azoxystrobin 50WDG

15 42 (Blumeria graminis) Most grasses; Kentucky bluegrass especially susceptible. Pythium Blight (Pythium spp.) All grasses on the upper and lower leaf surfaces of grasses. The disease is most common in excessively shaded areas with high humidities. Improve sunlight penetration and air movement or landscape the area with nonturfgrass plants that are shade tolerant. Grass dies in spots or streaks. Initially, the affected grass has a dark color and a greasy appearance, particularly in spots. Spots may develop a copper color and eventually a bleached, straw color as affected tissues die and dry. After prolonged moist or foggy periods, the cottony mycelium may be seen on the turf (note: this symptom is NOT always evident). Pythium can be spread by foot traffic or mowers passing over infected grasses. Occurs during warm, humid, foggy weather in poorly drained soils. Ryegrass, rough bluegrass, and bentgrass used for overseeding are most susceptible. Heritage TL azoxystrobin 0.8TL Heritage G azoyxystrobin 0.31G 2-4lb Briskway azoxystrobin + difenoconazole 1.67 SC Headway azoyxystrobin + propiconazole 1.4ME Headway G azoxystrobin + propiconazole 1.06G 2-4 lb Renown chlorothalonil + azoyxystrobin 5.16SC Disarm C chlorothalonil + fluoxastrobin 4.3SC Concert chlorothalonil + propiconazole 4.3SC Consyst chlorothalonil + thiophanate methyl 67WDG Spectro 90 chlorothalonil + thiophanate methyl 90WDG Rubigan AS fenarimol AS 2-4 Single application Disarm fluoxastrobin 4SC Disarm G fluoxastrobin 0.25G lb Junction mancozeb + copper hydroxide 60DF Eagle myclobutanil 20 EW Banner Maxx, propiconazole 1ME Insignia pyraclostrobin 20WG Honor Intrinsic pyraclostrobin + boscalid 28WG Pillar G pyraclostrobin + triticonazole 0.81G 3.0 lb Bayleton triadimefon 50WP, 4.15 Flo Heritage azoxystrobin 50WG; no more than 2 sequential sprays Heritage TL azoxystrobin 0.8TL; no more than 2 sequential sprays Heritage G azoyxystrobin 0.31G 2-4 lb Headway azoyxystrobin + propiconazole 1.4ME Headway G azoxystrobin + propiconazole 1.06G lb 14 Terraneb 65SP chloroneb 65 SP Terraneb F chloroneb 2.9F Disarm C chlorothalonil + fluoxastrobin 4.25 SC Vitalonil chlorothalonil + potassium phosphite 5.27 SC Segway cyazofamid 3.3SC Koban ethazole 30WP Terrazole ethazole 35WP Disarm fluoxastrobin 4SC Disarm G fluoxastrobin 0.25G lb 14 Stellar fluopicolide + propamocarb 5.7SC Lexicon fluxapyroxad + pyraclostrobin 4.17SC Signature, Prodigy, Fosetyl Al fosetyl Al 80WDG WDG Protect DF mancozeb 75DF Fore F mancozeb 4LF 14 5

16 43 Pythium Root Rot /Pythium Root Dysfunction (Pythium arrhenomanes, P. aristosporum, P. volutum) Creeping bentgrass primarily Rapid Blight (Labyrinthula terrestris) Improve aeration and Junction mancozeb + copper hydroxide 60DF drainage. Avoid frequent, Maneb plus Zinc maneb (37%)+ zinc F shallow irrigation. Reduce Subdue Maxx mefanoxam 2ME mowings and minimize Subdue WSP mefanoxam 43WSP equipment or foot traffic across infected turf. Wash Subdue G mefanoxam 1G lb equipment that passes from Subdue metalaxyl 2MEC infected to non-infected Biophos phosphorous acid salts grass areas. Alude phosphorous acid salts 5.17F Appear potassium phosphite 4.1 lb/gal Banol propamocarb 6S Insignia pyraclostrobin 20 WDG Honor Intrinsic pyraclostrobin + boscalid 28WG Pillar G pyraclostrobin + triticonazole 0.81G 3.0 lb 14 Note: Fungicides containing copper hydroxide may be phytotoxic; read label carefully & use precautions. To minimize the potential for resistance, alternate between classes of fungicides. Note: Fore mancozeb formulations now have restrictions on use rates and maximum seasonal rates see current label for details. Roots are off color, tan or light brown, water-soaked appearance with few or no feeder roots present. Sometimes, new roots may be initiated from crown regions as older roots become diseased. Root rot is favored in poorly drained or continuously wet soils but can occur in sand-based rootzones with excellent drainage. Areas will appear chlorotic and be less vigorous in growth, but usually do not die. Can occur year around, especially on over-irrigated sites. Avoid overwatering. Aerate compacted and poorly drained soils. Foliar fertilizer treatments may be useful. Patches from a few inches up to a foot in diameter occur most commonly in Heritage azoxystrobin 50WG; no more than 2 sequential sprays Heritage TL azoxystrobin 0.8TL; no more than 2 sequential sprays Heritage G azoxystrobin 0.31G 2-4 lb Headway azoxystrobin + propiconazole 1.4ME Headway G azoxystrobin + propiconazole 1.06G lb 14 Terraneb 65SP chloroneb 65SP Disarm C chlorothalonil + fluoxastrobin 4.25SC Segway cyazofamid 3.33SC Koban ethazole 30WP Terrazole ethazole 35WP Disarm fluoxastrobin 4SC Disarm G fluoaxastrobin 0.25G lb 14 Lexicon fluxapyroxad + pyraclostrobin 4.17SC Signature, Prodigy, Fosetyl Al fosetyl Al 80WG WDG Appear potassium phosphite 4.1 lb/gal Banol propamocarb 6S Insignia Intrinsic pyraclostrobin 2.08 SC Insignia pyraclostrobin 20WG Honor Intrinsic pyraclostrobin + boscalid 28WG Pillar G pyraclostrobin + triticonazole 0.81G 3.0 lb 14 Note: Water into the root-zone., except fosetyl Al formulations. To minimize the potential for resistance, alternate between classes of fungicides. Interface iprodione + trifloxystrobin 2.27 SC Fore mancozeb 80WP 8 14 Protect mancozeb 75WP 8 14

17 44 Red Thread (Laetisaria fuciformis) fescues and ryegrasses salinity-stressed cool season Insignia pyraclostrobin 20 WDG grasses. Affected turf can be chlorotic and water-soaked. Individual leaves appear Honor Intrinsic pyraclostrobin + boscalid 28G blotchy. The organism does Pillar G pyraclostrobin + triticonazole 0.81G 3.0 lb not form a mycelium. Lexicon fluxapyroxad + pyraclostrobin 4.17SC Manage salinity by core Compass trifloxystrobin 50 WDG aerification, gypsum Tartan trifloxystrobin + triadimefon 50WP applications and leaching regime. note: Fore mancozeb formulations now have restrictions on use rates and maximum seasonal rates see current label for details. In winter and early spring, leaf tips appear shriveled and ragged, occurring in patches up to 6 inches in diameter. Red to orange-colored fungal threads appear to grow from affected leaf tips. Turf appears as if it has been cut with a dull rotary mower. The disease is favored by cloudy, cold, humid weather. Maintain adequate fertility, and avoid transient drought conditions. Mow frequently at the correct cutting height. Note: chlorothalonil formulations have new maximum use rates in effect that depends on site - see new labels for details. Note: Fungicides containing copper hydroxide may be phytotoxic; read label carefully and use precautions. Heritage azoxystrobin 50WDG Heritage TL azoxystrobin 0.8TL Heritage G azoyxystrobin 0.31G 2-4lb Briskway azoxystrobin + difenoconazole 1.67 SC Headway azoyxystrobin + propiconazole 1.4ME Daconil Action chlorothalonil + acylbenzolar-s-methyl F Daconil Weather Stik, chlorothalonil 6F pre-disease Chlorothalonil 720 SFT, > post-disease post-disease Daconil Zn, Chlorothalonil 500 Zn, chlorothalonil 4.16F pre-disease > post-disease post-disease Daconil Ultrex, Chlorothalonil DF chlorothalonil 82.5%WDG, DF pre-disease > post-disease 5 14 post-disease Renown chlorothalonil + azoyxystrobin 5.16SC Disarm C chlorothalonil + fluoxastrobin 4.25SC Vitalonil chlorothalonil + potassium phosphite 5.27SC Concert chlorothalonil + propiconazole 4.3SC Instrata chlorothalonil + propiconazole + fludioxanil SC Consyst chlorothalonil + thiophanate methyl 67WG Spectro 90 chlorothalonil + thiophanate methyl 90WG Reserve chlorothalonil + triticonazole 4.8SC Rubigan AS fenarimol 1AS 8 30 Secure fluazinam 4.17 SC Disarm fluoxastrobin 4SC Disarm G fluoxastrobin 0.25G lb Prostar flutolanil 70WP, 70WDG Systar flutolanil + thiophanate methyl 80WG Chipco 26GT, iprodione pro, iprodione 2F, 2SC /36 iprodione + thiophanate methyl 3.8F

18 45 Rust (Puccinia and Uromyces spp.) bermudagrass ryegrass, St. Augustinegrass tall fescue zoysiagrasses Interface iprodione + trifloxystrobin 2.27 SC 4 14 Fore mancozeb 80WP Protect mancozeb 75DF Fore F mancozeb 4LF Junction mancozeb + copper hydroxide 60DF Maneb plus Zinc maneb (37%)+ zinc F Tourney metconazole 50WDG Eagle myclobutanil 20 EW Affirm polyoxin 11.3%WDG Endorse polyoxin 2.5WP Banner Maxx propiconazole 1.3ME Insignia pyraclostrobin 20WDG Honor Intrinsic pyraclostrobin + boscalid 28WG Pillar G pyraclostrobin + triticonazole 0.81G 3.0 lb Mirage Stressgard tebuconazole 2 SC WSP thiophanate methyl 50WSP F thiophanate methyl 4F TM 85WDG thiophanate methyl 85WG Spotrete thiram 4F Bayleton triadimefon 50WSP, 4.17 Flo Compass trifloxystrobin 50WDG Tartan trifloxystrobin + triadimefon 2SC Armada trifloxystrobin + triadimefon 50WP Trinity triticonazole 1.7SC Triton triticonazole 70WDG Curalan vinclozolin 50EG note: Fore mancozeb formulations now have restrictions on use rates and maximum seasonal rates see current label for details. Small yellow to orange or reddish-brown pustules on the leaves. Heavily infected area appears thin and chlorotic. Ryegrass and zoysiagrasses are most susceptible. Plant resistant or tolerant varieties. Maintain growth by fertilizing and irrigating adequately. Mow frequently and remove clippings. Humid weather following a drought period favors epidemics. Heritage azoxystrobin 50WDG Heritage TL azoxystrobin 0.8TL Heritage G azoyxystrobin 0.31G 2-4lb Briskway azoxystrobin + difenoconazole 1.67 SC Headway azoxystrobin + propiconazole 1.4ME Headway G azoxystrobin + propiconazole 1.06G 2-4 lb Daconil Weather Stik, chlorothalonil 6F pre-disease Chlorothalonil 720 SFT, post-disease Daconil Zn, Chlorothalonil 500 Zn, chlorothalonil 4.16 F pre-disease post-disease Daconil Ultrex chlorothalonil 82.5% WDG pre-disease 5 14 post-disease Renown chlorothalonil + azoyxystrobin 5.16SC Disarm C chlorothalonil + fluoxastrobin 4.25SC

19 46 Southern Blight (Sclerotium rolfsii) Creeping bentgrass, bluegrasses, fescues, and ryegrasses note: chlorothalonil Concert chlorothalonil +propiconazole 4.3SC formulations have new maximum use rates in effect Instrata chlorothalonil +propiconazole + fludioxanil 3.6SC that depends on site - see Consyst chlorothalonil + thiophanate methyl 67WG new labels for details. Spectro 90 chlorothalonil +thiophanate methyl 90WG Reserve chlorothalonil + triticonazole 4.8SC Secure fluazinam 4.17 SC Disarm fluoxastrobin 4SC Disarm G fluoxastrobin 0.25G lb Interface iprodione + trifloxystrobin 2.27 SC Protect DF mancozeb 75DF Fore, mancozeb 80WP Fore F, mancozeb 4LF Junction mancozeb + copper hydroxide 60DF Maneb plus Zinc maneb (37%)+ zinc F Tourney metconazole 50WDG Eagle myclobutanil 20 EW Banner Maxx, propiconazole 1.3ME Insignia pyraclostrobin 20 WDG Honor Intrinsic pyraclostrobin + boscalid 28WG Pillar G pyraclostrobin + triticonazole 0.81G 3.0 lb Mirage Stressgard tebuconazole 2 SC plus thiophanate methyl 2F thiophanate methyl 50WP, 4F TM 85WDG thiophanate methyl 85WG Spotrete thiram 4F Bayleton triadimefon 50WSP, 4.17 Flo Compass trifloxystrobin 50WDG Tartan trifloxystrobin + triadimefon 2SC Armada trifloxystrobin + triadimefon 50WP Trinity triticonazole 1.7SC Triton triticonazole 70WG Triton Flo triticonazole 3SC note: Fore mancozeb formulations now have restrictions on use rates and maximum seasonal rates see current label for details. Yellow, circular or crescent shaped patches up to 1 ft in diameter, sometimes with frog-eye symptoms or less affected grass in the center of patches. Affected turf is a reddish-brown or bronze Heritage azoxystrobin 50WDG Heritage TL azoxystrobin 0.8TL Heritage G azoyxystrobin 0.31G 2-4lb Briskway azoxystrobin + difenoconazole 1.67 SC Headway azoyxystrobin + propiconazole 1.4ME Headway G azoxystrobin + propiconazole 1.06G 2-4 lb Renown chlorothalonil + azoyxystrobin 5.16SC

20 47 Slime Mold (Physarum sp., and Fuligo sp.) All grasses Spring Dead Spot - (Ophiosphaerella korrae, O. narmari, or O. herpotricha) bermudagrass, especially sterile hybrids coloration, turning brown as Terraneb SP chloroneb 65SP it dies. Off-white or tan Disarm fluoxastrobin 4SC fungi sclerotia may be Disarm G fluoxastrobin 0.25G lb visible in the mat or thatch Prostar flutolanil 70WP, 70WDG with a hand lens. Avoid drought conditions preceding Systar flutolanil + thiophanate methyl 80WG hot, humid or wet weather; Bayleton triadimefon 50WSP, 4.15 Flo improve poorly drained soils Tartan trifloxystrobin + triadimefon 2SC and improve aeration to roots and crowns. Armada trifloxystrobin + triadimefon 50WP Bluish-gray encrustations on leaf blades. In spring and summer during heavy rain, prominent white or yellow slimy masses may develop. Slime molds are not parasites of turf. Brush off or wash off mold with a strong stream of water. Mow. First appears as circular dead areas 6 inches up to 2 feet in diameter in the spring when the rest of the turf area turns green with new growth. Normally bermudagrass does not invade the dead areas as the growing season progresses nor do the dead areas increase in size until the next spring. note: scout and map diseased spots in spring, treat with fungicides in late summer through early fall. In established bermudagrass, thorough cultivation of dead areas may provide temporary recovery. Manage thatch by cultural methods, and avoid excess, unbalanced N fertilization in late summer or early fall. Fore, mancozeb 80WP Protect mancozeb 75DF Fore F, mancozeb 37%F Heritage azoxystrobin 50WDG 0.4 Fall, 1 or 2 applications 1 month prior to dormancy, reapply days later. Heritage TL azoxystrobin 0.8TL 2 Fall, 1 or 2 applications 1 month prior to dormancy, reapply days later. Headway azoyxystrobin + propiconazole 1.4ME Headway G azoxystrobin + propiconazole 1.06G 2-4 lb Enclave chlorothalonil + iprodione + thiophanate methyl tebuconazole 5.3 SC Rubigan AS fenarimol 1AS 6 1 application 4 2 applications days apart Lexicon fluxapyroxad + pyraclostrobin 4.17 SC day Disarm fluoxastrobin 4SC fall Disarm G fluoxastrobin 0.25G lb fall Eagle, Myclobutanil 20EW myclobutanil 20 EW 2.4 Fall, 28 days Banner Maxx, Propiconazole 14.3, propiconazole 1.3ME applications, 30 day interval Mirage Stressgard tebuconazole 2 SC