Vegetable Disease Control Schedules

Transcription

1 Vegetable Disease Control Schedules Contents South Georgia Tomato Fungicide Programs Efficacy of Fungicides/Bactericides for Controlling Foliar Diseases of Beans Broccoli/Cabbage Fungicide Programs Cantaloupe Fungicide Programs Collard, Kale, Mustard, Turnip (greens) Fungicide Program Cucumber Fungicide Programs Efficacy of Fungicides/Bactericides against Foliar Diseases of Cucurbits 8. Pepper Fungicide Program 9. Squash Fungicide Program 10. Succulent Legume (snap, lima, pole bean) Fungicide Programs 1 Watermelon Fungicide Program 1 Efficacy of Fungicides/Bactericides against Tomato Diseases

2 South Georgia Tomato Fungicide Programs 2012 growers can minimize the amount of disease that is available to attack their crop. Using many practices takes all the weight off of any on practice and gives growers more disease management options at lower risk. Once plants are in the field, however, fungicide sprays are relied on heavily for effective and economical management of plant diseases. This spray guide is designed to encompass many diseases that attack tomato during the growing season(s) in Georgia. Schedule = 5 day Pre-plant Fall or Winter/Spring Georgia 3-way or WSP or Paladin Pic Actigard at 0.33 oz/acre in gallons of water copper fungicide + mancozeb + chlorotalonil 1 /BS + EB Actigard at 0.33 oz/acre in gallons of water copper fungicide + mancozeb + Quadris or Cabrio/BS + EB + TS Actigard at 0.5 oz/acre in gallons of water copper fungicide + mancozeb + chlorothalonil 1 /BS + EB Actigard at 0.5 oz/acre in gallons of water copper fungicide + mancozeb + Quadris or Cabrio /BS + EB + TS Actigard at 0.75 oz/acre in gallons of water copper fungicide + mancozeb + chlorothalonil 1 /BS + EB Actigard at 0.75 oz/acre in gallons of water copper fungicide + mancozeb + Quadris or Cabrio /BS + EB + TS copper fungicide + mancozeb + Endura or Switch or Fontelis/BS + EB + BOT + TS copper fungicide + mancozeb + Endura or Switch or Fontelis/BS + EB + BOT + TS and so on until harvest or pre-harvest interval. 1 Chlorothalonil (Bravo, Echo, Equus, etc) Disease Acronyms: BS = bacterial spot; EB = early blight; TS = target spot; BOT = Botrytis fruit rot.

3 EFFICACY OF FUNGICIDES/BACTERICIDES FOR CONTROLLING FOLIAR DISEASES OF BEANS 1 David Langston, Extension Plant Pathologist DISEASES REGISTERED FUNGICIDES 2 Common rust Asian soybean rust Anthracnose Cercospora Downy mildew Powdery mildew Foliar bacterial diseases White mold (Sclerotinia) Souhtern stem rot (S. rolfsii) Pythium damping-off Pythium cottony leak Rhizoctonia sore shin Aerial Rhizoctonia Fusarium crown rot Endura (boscalid) U U U U N U N E P N N U U N Fontelis (penthiopyrad) U U U U N U N E G N N U U N Headline (Pyraclostrobin) E E G E U U N N G-F N FV F G N Quadris/Amistar (azoxystrobin) E E G G U U N N E N FV G E N Switch (cyprodinil + fludioxinil) U U U G N U N F N N N U U N Ridomil Gold Copper (mefenoxam + cupric hydroxide) P P P P G-F N G-F N N P GV N N N Rildomil Gold SC (mefenoxam) N N N N N N N N N G P N N N Phosphite or phosphorous acid fungicides N N F U F N N N N N G-F N N N Rovral (iprodione) N N N N N N N G N N N F P N Terraclor (PCNB) N N N N N N N N G-F N N G N N Fixed copper 3 P P P P N P G N N N P N N N Bravo/Equus (chlorothalonil) G F F G G P N N N N N N P N Folicur/Tebuzol (tebuconazole) G G P G N G-F N P G N N U F N Rally (myclobutanil) E E N G-F N G N N N N N U F N Topsin (thiophanate methyl) U U G-F G N U N F N N N P P P 1 Ratings for products were conducted at the 2005 Southeast Extension Vegetable Workers Conference in Fletcher, NC. Efficacy ratings do not necessarily indicate a labeled use. V = Variable levels of control. R = Pathogen resistance (insensitivity) may be present at some locations. E = Excellent disease suppression, G = Good disease suppression, F = Fair disease suppression, P = Poor to no disease suppression U = Unknown efficacy N = No efficacy

4 Broccoli/Cabbage Fungicide Programs 2012 growers can minimize the amount of disease that is available to attack their crop. Using many practices takes all the weight off of any on practice and gives growers more disease management options at lower risk. Once plants are in the field, however, fungicide sprays are relied on heavily for effective and economical management of plant diseases. This spray guide is designed to encompass many diseases that attack these brassicas during the growing season(s) in Georgia. Schedule = 7 day Pre-plant Fall or Winter/Spring Besides deep-turning, use Terraclor/RHIZ + CR or Quadris/RHIZ Chlorothalonil 1 /DOW copper fungicide 2 /BR Ridomil Gold Bravo 3 or Forum or Zampro or Revus 4 or Reason 5 or Presidio + chlorothalonil/dow Quadris or Cabrio/ALT + CERC Ridomil Gold Bravo or Forum or Zampro or Revus or Reason or Presidio + chlorothalonil/dow Switch/ALT + CERC + SCR Ridomil Gold Bravo or Forum or Zampro or Revus or Reason or Presidio + chlorothalonil/dow Quadris or Cabrio/ALT + CERC or Endura or Fontelis/ALT + SCR Ridomil Gold Bravo or Forum or Zampro or Revus or Reason or Presidio + chlorothalonil/dow Switch/ALT + CERC + SCR or Quadris or Cabrio/ALT + CERC Ridomil Gold Bravo or Forum or Zampro or Revus or Reason or Presidio + chlorothalonil/dow Endura or Fontelis/ALT + SCR 1 Chlorothalonil (Bravo, Echo, Equus, etc ). 2 Copper is used to suppress spread of black rot caused by the bacterium Xanthomonas campetris pv. campestris. 3 Ridomil Gold Bravo and/or Presidio need to be rotated with Zampro, Forum, Revus, and/or Reason. 4 Forum and Revus have the same mode of action, so don t spray them back-to-back. Use one or the other. 5 If Reason is used you don t need to use Quadris or Cabrio as all three control Alternaria and Cercospora. Don t spray Reason, Cabrio or Quadris back-to-back as they have the same mode of action. Disease Acronyms: DOW = downy mildew; ALT = Alternaria leaf spot; CERC = Cercospora leaf spot; BR = black rot; SCR = Sclerotinia (raisin head); CR = club root.

5 Cantaloupe Fungicide Programs 2012 growers can minimize the amount of disease that is available to attack their crop. Using many practices takes all the weight off of any on practice and gives growers more disease management options at lower risk. Once plants are in the field, however, fungicide sprays are relied on heavily for effective and economical management of plant diseases. This spray guide is designed to encompass many diseases that attack cantaloupe during the growing season(s) in Georgia. Schedule = Start 1 week after transplanting, then use 7 day schedule if raining once a week. Spring copper at lowest labeled rate 1 /BFB copper at lowest labeled rate 1 /BFB copper at lowest labeled rate 1 /BFB Tebuconazole OR Inspire Super/GSB Presidio, Ranman, Revus or Zampro /DOW or PCAP Fall Chlorothalonil + tebuconazole 2 /GSB copper at lowest labeled rate 1 /BFB Presidio, Ranman, or Zampro/DOW copper at lowest labeled rate 1 /BFB Presidio, Ranman, or Zampro/DOW Chlorothalonil + tebuconazole 2 OR Inspire Super/GSB copper at lowest labeled rate 1 /BFB Presidio, Ranman, or Zampro/DOW 8 3. Chlorothalonil + Fontelis/GSB + POW Presidio, Ranman, Revus or Zampro /DOW or PCAP Tebuconazole OR Inspire Super/GSB Chlorothalonil + Fontelis/GSB + POW 8 3. Presidio, Ranman, Revus or Zampro/DOW+PCAP Chlorothalonil + tebuconazole OR Inspire Super/GSB Presidio, Ranman, Revus or Zampro/DOW+PCAP Chlorothalonil + Fontelis/GSB + POW /GSB Presidio, Ranman, Revus or Zampro/DOW+PCAP Chlorothalonil + tebuconazole OR Inspire Super/GSB Presidio, Ranman, Revus or Zampro/DOW+PCAP Chlorothalonil + Fontelis/GSB + POW /GSB Presidio, Ranman, Revus or Zampro/DOW+PCAP 1 Copper is used prior to fruit set at lowest labeled rate if bacterial fruit blotch is an issue. 2 Tebuconazole (any tebuconazole) should be used at 8.0 fl oz when sprayed each time with a seasonal limit of 24 fl oz. 3 Be mindful of preharvest intervals (PHIs) for later sprays as many may have a 7-14 day PHI. Disease Acronyms: BFB = bacterial fruit blotch; GSB = gummy stem blight; POW = powdery mildew; DOW = downy mildew; ANTH = anthracnose; PCAP = Phytophthora crown and fruit rot.

6 Collard, Kale, Mustard, Turnip (greens) Fungicide Programs 2012 growers can minimize the amount of disease that is available to attack their crop. Using many practices takes all the weight off of any on practice and gives growers more disease management options at lower risk. Once plants are in the field, however, fungicide sprays are relied on heavily for effective and economical management of plant diseases. This spray guide is designed to encompass many diseases that attack greens during the growing season(s) in Georgia. Schedule = 7 day Pre-plant Fall or Winter/Spring Besides deep-turning, use Terraclor/RHIZ + CR or Quadris/RHIZ Zampro or Forum or Revus 2 or Reason 3 /DOW copper fungicide 1 /BR Quadris or Cabrio/ALT + CERC Zampro or Forum or Revus or Reason/DOW Folicur/ALT + CERC Zampro or Forum or Revus or Reason/DOW Quadris or Cabrio/ALT + CERC and/ or Endura/ALT + SCR Zampro or Forum or Revus or Reason/DOW Folicur/ALT + CERC Zampro or Forum or Revus or Reason /DOW Endura/ALT + SCR Zampro or Forum or Revus or Reason/DOW Folicur/ALT + CERC 1 Copper is used to suppress spread of black rot caused by the bacterium Xanthomonas campetris pv. campestris. 2 Forum and Revus have the same mode of action, so don t spray them back-to-back. Use one or the other. 3 If Reason is used you don t need to use Quadris or Cabrio as all three control Alternaria and Cercospora. Don t spray Reason, Cabrio or Quadris back-to-back as they have the same mode of action. Disease Acronyms: DOW = downy mildew; ALT = Alternaria leaf spot; CERC = Cercospora leaf spot; BR = black rot; SCR = Sclerotinia (raisin head); CR = club root.

7 Cucumber Fungicide Programs 2012 growers can minimize the amount of disease that is available to attack their crop. Using many practices takes all the weight off of any one practice and gives growers more disease management options at a lower risk. Once plants are in the field, however, fungicide sprays are relied on heavily for effective and economical management of plant diseases. This spray guide is designed to encompass many diseases that attack cucumber during the growing season(s) in Georgia and is not intended to be followed literally but to give an idea of the chronology of disease pressure in relation to fungicide choice. Each field in each year has different situations that call for different actions. Schedule = 7 day Spring Chlorothalonil 1 or mancozeb/dow + ANTH + GSB Chorothalonil or mancozeb/dow + ANTH + GSB Fall Cabrio/ANTH Chorothalonil or mancozeb/dow + ANTH + GSB Quadris + Folicur/RHIZ + ANTH + GSB Topsin + mancozeb/anth + DOW Folicur 2 + chlorothalonil/rhiz + GSB + DOW Cabrio/ANTH Folicur + chlorothalonil/rhiz + GSB + DOW 8. Chlorothalonil/ANTH + DOW + GSB Cabrio or Topsin/ANTH Chlorothalonil/ANTH + DOW + GSB Quadris/RHIZ + ANTH Cabrio or Topsin/ANTH Folicur + chlorothalonil/rhiz + GSB + DOW 8. Chlorothalonil/ANTH + DOW + GSB 1 Chlorothalonil (Bravo, Echo, Equus, etc ). 2 Folicur should be used at 8.0 fl oz when sprayed each time with a seasonal limit of 24 fl oz. Disease Acronyms: GSB = gummy stem blight; RHIZ=Rhizoctonia belly rot; DOW = downy mildew; ANTH = anthracnose; PCAP = Phytophthora crown and fruit rot.

8 EFFICACY OF FUNGICIDES/BACTERICIDES AGAINST FOLIAR DISEASES OF CUCURBITS 1 David Langston, Extension Plant Pathologist DISEASES REGISTERED FUNGICIDES 2 Anthracnose Alternaria leaf spot and blight Gummy Stem Blight Target Spot Plectosporium blight Powdery mildew Downy mildew Bacterial fruit blotch Angular leaf spot Phytophthora fruit and crown rot Pythium cottony leak Rhizoctonia belly rot Southern stem blight (S. roflsii) Pristine (boscalid + pyraclostrobin) E-G E ER G G ER PR N N N N P P Luna Experience (fluopyram + tebuconazole) U E E G U E N N N N N U U Fontelis (penthiopyrad) U E ER G U E N N N N N U U Cabrio (pyraclostrobin) E-G E ER G G FR PR N N N N P P Quadris/Amistar (azoxystrobin) E-G E ER G G FR PR N N N N E G Flint (trifloxystrobin) G E ER G G FR PR N N N N P P Ranman (cyazofamid) N N N N N N E N N N U N N Presidio (fluopicolide) N N N N N N E N N G P N N Revus (mandipropamid) N N N N N N P N N G-F U N N Zampro (ametoctradin + dimethomorph) N N N N N N G N N G U N N Aliette (fosetyl Al) P P N P P P P N N N P N N Forum (dimethomorph) N N N N N N P N N FV U N N Gavel (zoxamide + mancozeb) G-F P P G-F N N G N N U U N N Tanos (famoxate + cymoxanil) P G P P U N E-G P N P P N N Reason (fenamidone) N N N N N N GR N N P P N N Previcur Flex N N N N N N G-F N N N P N N Switch (cyprodinil + fludioxinil) G E G U U G N N N N N N N Ridomil Gold Bravo (mefenoxam + chlorothalonil) G-F G-F G-F G G F GR N N GR F P P Ridomil Gold MZ (mefenoxam + mancozeb) G P P F F N GR N N GR F P P Ridomil Gold Copper (meneoxam + Cu hydroxide) N N N N N N GR G G GR F P P Rildomil Gold SC (mefenoxam) N N N N N N N N N GR P N N Rally (myclobutanil) N N N N N G-F N N N N N N N Quintec (quinoxyfen) N N N N N E N N N N N N N Fixed copper 3 P P P P P P F-P G G F-P P N N Actigard (acibenzolar-s-methyl) U U U U U F F G G U U N N Maneb/mancozeb G P P G-F F P G P P P P N N Bravo/Equus (chlorothalonil) G G G G G F G N N P P P N Topsin (thiophanate methyl) GC F-P VR G-F U FR N N N N N P N Folicur/Tebuzol (tebuconazole) P F G U U F N N N N N F F Procure (triflumizole) N N N N N G N N N N N N N Torino (cyflufenamid) N N N N N E N N N N N N N C = When used in combination with other fungicides/bactericides such as chlorothalonil and mancozeb. V = Variable levels of control, R = Pathogen resistance (insensitivity) may be present at some locations. E = Excellent disease suppression, G = Good disease suppression, F = Fair disease suppression, P = Poor disease suppression, N = no efficacy, U = Unknown efficacy.

9 Pepper Fungicide Programs 2012 As with most crops, disease management begins prior to planting the crop to be protected. By using such methods as disease-free seed and transplants, proper rotation, discing and plowing, and use of resistant varieties, growers can minimize the amount of disease that is available to attack their crop. Using many practices takes all the weight off of any one practice and gives growers more disease management options at lower risk. Once plants are in the field, however, fungicide sprays are relied on heavily for effective and economical management of plant diseases. This spray guide is designed to encompass many diseases that attack peppers in Georgia. Spay Pre-plant Schedule = 5 day Fall or Winter/Spring. Methyl bromide or Georgia 3-way Ridomil at plant drench/pcap copper fungicide/bs copper fungicide/bs Quintec and copper fungicide copper fungicide/bs Presidio through the drip/pcap Quintec and copper fungicide/bs Cabrio or Quadris/ANTH copper fungicide/bs Quintec and copper fungicide/bs Zampro/PCAP 8. copper fungicide/bs 9. Presidio spray or through drip/pcap Quintec and copper fungicide/bs 10. Cabrio or Quadris/ANTH copper fungicide/bs 1 copper fungicide/bs Zampro/PCAP 1 copper fungicide/bs 13 Cabrio or Quadris/ANTH copper fungicide/bs 1 copper fungicide/bs 1 copper fungicide/bs and so on until harvest or pre-harvest interval. 1 Chlorothalonil (Bravo, Echo, Equus, etc.). Always read the label for detailed application instructions or consult the Georgia Pest Control handbook. Disease Acronyms: BS = bacterial spot; ANTH = anthracnose; PCAP = Phytophthora crown rot.

10 Squash Fungicide Programs 2012 growers can minimize the amount of disease that is available to attack their crop. Using many practices takes all the weight off of any on practice and gives growers more disease management options at lower risk. Once plants are in the field, however, fungicide sprays are relied on heavily for effective and economical management of plant diseases. This spray guide is designed to encompass many diseases that attack squash during the growing season(s) in Georgia and is not intended to be followed literally but to give an idea of the chronology of disease pressure in relation to fungicide choice. Each field in each year has different situations that call for different actions. Schedule = 7 day Spring Chlorothalonil 1 or mancozeb/dow Chorothalonil or mancozeb/dow Chorothalonil or mancozeb/dow Fall Presidio or Ranman or Zampro/DOW + PCAP Presidio or Ranman or Zampro/DOW + PCAP Chorothalonil or mancozeb/dow Presidio or Ranman or Zampro/DOW + PCAP Chlorothalonil (Bravo, Echo, Equus, etc ). 2 Folicur should be used at 8.0 fl oz when sprayed each time with a seasonal limit of 24 fl oz. Disease Acronyms: GSM = gummy stem blight; RHIZ=Rhizoctonia belly rot; DOW = downy mildew; ANTH = anthracnose; PCAP = Phytophthora crown and fruit rot.

11 Succulent Legume (snap, lima, pole bean) Fungicide Programs 2012 growers can minimize the amount of disease that is available to attack their crop. Using many practices takes all the weight off of any practice and gives growers more disease management options at lower risk. Once plants are in the fields, however, fungicide sprays are relied on heavily for effective and economical management of plant diseases. This spray guide is designed to encompass many disease that attack succulent pod legumes during the growing season(s). Schedule = 7 14 day Spring/Summer Fall Fungicide(s) /disease activity Chlorothalonil 1 of Folicur/R + CERC + ALT Chlorothalonil 1 of Folicur/R + CERC + ALT Chlorothalonil 1 of Folicur/R + CERC + ALT Chlorothalonil 1 of Folicur/R + CERC + ALT Chlorothalonil 1 of Folicur/R + CERC + ALT Chlorothalonil 1 of Folicur/R + CERC + ALT Quadris/RHIZ + R CERC + ALT Quadris/RHIZ + R CERC + ALT Topsin / ANTH (mainly lima bean) Quadris/RHIZ + R + CERC + ALT Ridomil Gold Copper or Cabrio/PYTH or Quadris/PYTH + RHIZ + R + CERC + ALT Phosphite-type product/pyth Rally/R + RHIZ Ridomil Gold Copper or Cabrio / PYTH or Quadris / PYTH + RHIZ + R + CERC + ALT Phosphite-type product /PYTH 8. Ridomil Gold Copper or Cabrio/PYTH or Quadris/PYTH + RHIZ + R + CERC + ALT Phosphite-type product/pyth Topsin / ANTH (mainly lima bean) Quadris/RHIZ + R + CERC + ALT Ridomil Gold Copper or Cabrio/PYTH or Quadris/PYTH + RHIZ + R + CERC + ALT Phosphite-type product/pyth Rally/R + RHIZ Ridomil Gold Copper or Cabrio / PYTH or Quadris / PYTH + RHIZ + R + CERC + ALT Phosphite-type product /PYTH 8. Omega 500 or Rovral or Topsin or Fontelis/ SCR 1 Chlorothalonil (Bravo, Echo, Equus, etc ). Always read the label for detailed application instructions of consult the Georgia pest Control handbook. Disease Acronyms: RHIZ=Rhizoctonia belly rot; R = rust; ANTH = anthracnose; ALT = Alternaria pod and leaf spot: CERC = Cercospora leaf spot; PYTH = Pythium cottony leak; SCR = Scelerotinia or white mold.

12 Watermelon Fungicide Programs 2012 growers can minimize the amount of disease that is available to attack their crop. Using many practices takes all the weight off of any on practice and gives growers more disease management options at lower risk. Once plants are in the field, however, fungicide sprays are relied on heavily for effective and economical management of plant diseases. This spray guide is designed to encompass many diseases that attack watermelon during the growing season(s) in Georgia. Schedule = Start 1 week after transplanting, then use 7 day schedule if raining once a week. Spring Chlorothalonil 1 /GSB Actigard and/or copper fungicide 2 /BFB Fall Chlorothalonil 1 + Folicur 3 /GSB Actigard and/or copper fungicide 2 /BFB Folicur 3 /GSB or chlorothalonil/gsb Actigard and/or Chlorothalonil + Folicur OR Inspire Super/GSB Actigard and/or Folicur OR Inspire Super/GSB Chlorothalonil + Folicur OR Inspire Super/GSB Luna Experience/POW + GSB Presidio, Revus or Zampro /DOW or PCAP Luna Experience/POW + GSB Presidio or Revus/DOW or PCAP Folicur OR Inspire Super /GSB Quintec or Torino or Endura or Procure or Rally/POW Folicur OR Inspire Super /GSB Quintec or Torino or Endura or Procure or Rally/POW 8 4. Luna Experience/POW + GSB 8 4. Luna Experience/POW + GSB 9 4. Folicur OR Inspire Super/GSB Topsin + mancozeb OR Inspire Super/ANTH + GSB 9 4. Folicur OR Inspire Super/GSB Topsin + mancozeb OR Inspire Super/ANTH + GSB Presidio or Revus/DOW or PCAP 1 Chlorothalonil (Bravo, Echo, Equus, etc ) may cause rind burn if sprayed within 21 day of harvest. 2 Actigard and/or Copper is used prior to fruit set if bacterial fruit blotch is an issue. 3 Folicur (any tebuconazole) should be used at 8.0 fl oz when sprayed each time with a seasonal limit of 24 fl oz. 4 Be mindful of preharvest intervals (PHIs) for later sprays as many may have a 7-14 day PHI. Disease Acronyms: BFB = bacterial fruit blotch; GSB = gummy stem blight; POW = powdery mildew; DOW = downy mildew; ANTH = anthracnose; PCAP = Phytophthora crown and fruit rot.

13 EFFICACY OF FUNGICIDES/BACTERICIDES AGAINST TOMATO DISEASES 1 David Langston, Extension Plant Pathologist DISEASES REGISTERED FUNGICIDES 2 Bacterial canker Clavibacter michiganensis Bacterial speck Pseudomonas syringae pv. tomato Bacterial spot Xanthomonas campstris pv. vesicatoria Botrtytis gray mold and Sclerotinia Crystulariella leaf spot Target spot Early blight Late blight Powdery mildew Septoria leaf spot Southern stem rot Sclerotium rolfsii Pythium collar rot Tomato Spotted Wilt Virus Endura (boscalid) N N N G P G E N U P U N N Fontelis (penthiopyrad) N N N G P G E N U P G N N Cabrio (pyraclostrobin) N N N P U G E G-F E-G E-G G P N Quadris/Amistar (azoxystrobin) N N N P U U E G-F E-G E-G G P N Flint (trifloxystrobin) N N N P U U E G-F E-G E-G G P N Ranman (cyazofamid) N N N N N N F G N N N U N Presidio (fluopicolide) N N N N N N N G N N N U N Zampro (ametoctradin = dimethomorph) N N N N N N N G N N N U N Revus Top (mandipropamid + difenoconazole) N N N N N N F G U U U N N Previcur Flex (propamocarb) N N N N N N N G-F N N N P N Aliette (fosetyl Al) N N N N N N N F N N N N N Forum (dimethomorph) N N N N N N N GC N N N N N Gavel (zoxamide + mancozeb) N N N N N N G-F G-F N G-F N N N Tanos (famoxate + cymoxanil) P P P N U F E-G G P P N N N Reason (fenamidone) N N N N U U G G N F N N N Switch (cyprodinil + fludioxinil) N N N G U U G N G U N N N Ridomil Gold Bravo (mefenoxam + chlorothalonil) N N N F P F G GR P G N F-P N Ridomil Gold MZ (mefenoxam + mancozeb) P P P P P G P GR P F N F-P N Ridomil Gold Copper (meneoxam + Cu hydroxide) G-F G-F G-F P P P P GR P P N F-P N Rildomil Gold SC (mefenoxam) N N N N N N N N N N N G N Rally (myclobutanil) N N N N E-G N N N E N N N N Actigard (acibenzolar-s-methyl) 3 U G-F G-F P P P P F-P P P P P F-P Maneb/mancozeb P P P P P G P G-F P G-F P P P Bravo/Equus (chlorothalonil) N N N F P F G GR P G N F-P N Scala (pyrimethanil) N N N GR U N G P P P N N N Streptomycin sulfate 2 GR GR GR N N N N N N N N N N 1 Information in this table was mostly taken from ratings developed at the 2009 Southeast Vegetable Workers Conference in Fletcher, NC. Ratings for products do not necessarily indicate a labeled use. 2 Streptomycin may only be used i n plant beds, not registered for field use. 3 Phytotoxicity observed. Follow label carefully. C = When used in combination with other fungicides/bactericides such as chlorothalonil and mancozeb, V = Variable levels of control. R = Pathogen resistance (insensitivity) may be present at some locations, E = Excellent disease suppression, G = Good disease suppression, F = Fair disease suppression, P = Poor to no disease suppression, U = Unknown efficacy