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POTATO FUNGICIDES (Labeled & Rates/A) as of June 2009


T. A. Zitter, Dept. Plant Pathology, Cornell University, Ithaca, NY

NOTE: ONLY Underlined Products are Registered in NYS for Commercial Use; Group Numbers are from the Fungicide Resistance Action Committee and EPA; (Fungicide Resistance* concerns are given in RED italics); (Important comments are in RED); Because of EB* resistance to Strobilurins in NYS, consider protectants, Endura, or the mixture of Quadris Opti, or Revus Top, orTanos tank-mixed with protectant, or Gavel for EB control, do not rely upon strobilurins alone; Major fungicide groups have been color coded to aid in finding and categorizing by MOA (mode of action): Phosphorous acids = Blue; Strobilurins or Group 11 = violet; Chlorothalonils = gray; Coppers = green; and Sulfurs = gold. Fungicides/Nematicides: for use as seed piece, postharvest and tuber blight protection; for in-furrow and soil treatments.

 

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·        Acrobat 50 WP See also Forum (EPA 241-410) REI 12 hrs (dimethomorph, Group 15) (BASF); for LB and tuber blight suppression4 DTH

·        Actinovate AG (EPA 73314-1) OMRI, REI 1 hr or till dry as foliar application (Streptomyces lydicus WYEC 108, biological) (Natural Industries) AG as In-furrow and Soil drench at planting for Fusarium, Rhizoctonia, Pythium, Phytophthora, 3-12 oz/A in sufficient water; Foliar treatment for Botrytis, Alternaria, 3-12 oz/20-150 gal/A. 0 DTH.

·         Actino-Iron Biological Fungicide (EPA 73314-2) OMRI, REI 4 hrs. (Streptomyces lydicus WYEC 108, biological) (Natural Industries); for Fusarium, Rhizoctonia, Pythium, Phytophthora; In-furrow application, 10-15 lb/A; also used as a side-dress followed by watering in.  0 DTH.

·        Agri-Fos (EPA 71962-1) REI 4 hrs (phosphorous acid, Group 33) (Agrichem); In-furrow Pink rot & leak 2-5 qt/10 gal; Foliar LB, PR, Leak, 1.25 qt/A. 0 DTH.

·        Agri-mycin 17 (EPA 55146-96) OMRI, REI 12 hrs (Streptomycin sulfate, Group 25) (Nufarm); Soft rot and blackleg, 100 ppm (4 oz/50 gallons water) for treatment of cut seed before planting; inclusion of fungicides is recommended.  0 DTH.

·        Agricultural Streptomycin (EPA 73220-4) REI 12 hrs (Streptomycin sulfate, Group 25) (MAMA/Farm Saver); see Agri-mycin 17 above.  0 DTH.

·        Agri Tin (EPA 55146-72) REI 48 hrs, † restricted use (triphenyltin hydroxide, Group 30) (Nufarm); EB, LB suppression of CPB, 2.5-3.75 dry oz pack/A.  7 DTH.

·        Amistar 80 WDG (EPA 100-1164) REI 4 hrs (azoxystrobin, Group 11) (Syngenta); Foliar EB*, LB, Blk dot, PM, 2.0-5 oz; also in-furrow for Rhizoc, SS, and Blk Dot, 0.125-0.25 oz/1000 row ft (Do not use alone for EB* control; Do not apply sprays near apples; No more than 1 applic. before alternate with Diff. MOA and limit to 6 applications per season).  14 DTH.

·        Applause 720 (EPA 50534-188) REI 12 hrs (54% chlorothalonil, group M5) (UAP, Loveland); LB, EB, Botrytis vine rot, ¾ pt then 1-1 ½ pt (do not apply more than 15 pts per season).  7 DTH. (OLF Applause DF) (Do not use on greenhouse-grown crops).

·        Badge SC (EPA 80289-3) REI 24 hrs (copper oxychloride + copper hydroxide, 20% metallic equiv. w/w, Group M1) (Isagro).  EB, LB, 0.9-3.7 pt/A.  0 DTH. (Greenhouse and shadehouse use for crops on label)

·        Basic Copper 53 (EPA 45002-8) OMRI, REI 24 hrs (basic copper sulfate, 53% metallic equiv. Group M1) (Albaugh). EB, LB, 3-6 lb/A.  0 DTH.

·        Basic Copper Sulfate (EPA 46923-9) REI 24 hrs (basic copper sulfate, 53% metallic equiv., Group M1) (Old Bridge); EB, LB, 3-6 lb/A.  0 DTH.

·        Bio-Save 11LP (EPA 81803-1) REI 4 hrs? (Pseudomonas syringae strain ESC-11, biological) (JET Harvest Solutions); A postharvest biological disease prevention treatment, aids in the control of dry rot and silver scurf; for overhead spray application, add 250 g to 40 gallon of water and agitate to achieve uniform coverage and at the rate of 1 gal of suspension to 2-4,000 lbs potatoes. DTH does not apply.

·        Bli-Nix (EPA 72431-1) REI 48 hrs (rhamnolipid biosurfactant, contact zoospores) (Jeneil); LB, 85-125 ppm.  Solution must make contact with zoospores to be effective.  0 DTH.

·        Blocker 4F (EPA 5481-472) REI 12 hrs (quintozene, PCNB, Group 14) (Amvac); in-furrow Rhizoc stem canker and Blk scurf, 5-10 pt (34-in row spacing; 5.2-10.4 fl oz/1,000 row ft.  0 DTH. (product has a 24c in western states for chemigation method of application for WM and Black Dot control)

·        Bravo W Stik 6SC (EPA 50534-188-100) REI 12 hrs (chlorothalonil, Group M5) (Syngenta); EB, LB, Botrytis vine rot, Black Dot, ¾ pt then 1 – 1 ½ pt./A.  7 DTH. (Do not use on greenhouse-grown crops).

·        Bravo Ultrex 82.5 WDG (EPA 50534-201-100) REI 12 hrs (chlorothalonil, Group M5) (Syngenta); EB, LB, Botrytis vine rot; 0.7lb then 0.9-1.4 lb. then 0.75-1.1 lbs/A.  7 DTH. (Do not use on greenhouse-grown crops).

·        Bravo ZN (EPA 50534-204-100) REI 12 hrs (38.5% chlorothalonil, M5) (Syngenta); EB, LB, Botrytis vine rot, Black Dot, 1.25 pt, then 1.5-2.25 pt/A.  7 DTH. (Do not use on greenhouse-grown crops).

·        Champ Formula 2 (EPA 55146-64) REI 24 hrs (copper hydroxide 37.5%, Group M1) (also Champ DP, EPA 55146-57) (Nufarm); EB, LB, 2/3 – 1 pt/A then 2 - 2/3 pt/A; only suppression of CPB.  0 DTH.

·        Champion WP (EPA 55146-1) REI 24 hrs (copper hydroxide 77%, Group M1) (Nufarm); EB, LB, 1 to 1 ½ then 3-4 lb; only suppression of CPB.  0 DTH.

·        Chlorothalonil 720SC (EPA 66330-362) REI 12 hrs. with PPE. (54% chlorothalonil, group M5) (Arysta); Foliage: EB, LB, Botrytis vine rot, Blk dot ¾ then 1-1/2 pt.  7 DTH.

·        Contans WG (EPA 72444-1) OMRI, REI 4 hrs (Coniothyrium minitans, biological fungicide) (Sylvan Bioproducts/Prophyta); WM in agricultural and greenhouse soils, 1-4 lbs/A or 0.75-1.5 oz per 1000 sq ft.  0 DTH.

·        C-O-C-S WDG (EPA 34704-326) REI 24 hrs. (74.8% copper oxychloride + 14.2% basic copper sulfate, 50% metallic equiv., Group M1) (Loveland). EB, LB, 1 ½-4 lb/A0 DTH.

·        CruiserMaxx Potato - liquid seed treatment (EPA 100-1248) REI 12 hrs. (thiamethoxam 28% + fludioxonil 7%, insecticide + group 12 fungicide) (Syngenta); See label for rates used on 2.5 oz seed pieces per 100 lb seed; apply over cut or whole seed tubers first before adding any inert dust (fir bark, talc, etc.); apply liquid only with Syngenta approved equipment; use thiamethoxam against certain chewing and sucking insects (aphids, CPB, flea beetles, LH, LM, psyllids and WF); use fludioxonil for Fusarium dry rot, seedborne Rhizoc. and silver scurf.

·        Cuprofix Ultra 40 Disperss (EPA 4581-413) REI 24 hrs (40% basic copper sulfate, Group M1) (United Phosphorus) EB, LB, 0.75-3 lb. (Label allows greenhouse [hoop] and field applications) 0 DTHAlso Cuprofix Disperss DF (20% metallic copper).

·        Cuprofix MZ Disperss DF (EPA 4581-397) REI 24 hrs (22.1% basic copper sulfate (12% metallic equiv) + 30.4% mancozeb) (United Phosphorus) EB, LB, 1.5-4.75 lb/A.  3 DTH.

·        Curzate 60DF (EPA 352-592) REI 12 hrs (cymoxanil, Group 27, + protectant Group M1, M3, or M5) (Dupont) LB, 3.2 oz.  14 DTH.

·        Decco Salt No. 19 (EPA 2792-50) 12 hrs (thiabendazole, 99.5%, group 1, resistance common) (United Phosphorus); Post harvest treatment Fusarium dry rot of unwashed tubers using 5.67 gm/2000 lbs potato, and may be used as additional treatment before shipping using the same rate or dip the tubers for 20 sec in a solution containing 5.67 gm per gallon of water. Up to half of the fungus population may be resistant* to this fungicide.  DTH does not apply.

·        Dithane DF Rain Shield (EPA 62719-402) REI 24 hrs (mancozeb, Group M3) (Dow); Seed treatment for Fus. Decay, LB, Com scab, Rhiz, SS 1.25 lb/50 gal; Foliage, EB, LB, 0.5-2 lb/A.  3 DTH.

·        Echo Ultimate 825 (EPA 60063-3) REI 12 hrs (chlorothalonil, group M5) (Sipcam); LB, EB, Botrytis vine rot 0.68 lb then 0.91-1.36 lb.  7 DTH (OLF Echo 720 and Echo 90DF) (Do not use on greenhouse-grown crops).

·        Elexa 4 (EPA 81045-2) REI 4 hrs (chitosan, SAR) (Plant Defense Booster); EB, LB 1.25-5 gal/25-200 gal/A.  0 DTH.

·        Endura 70 WG (EPA 7969-197) REI 12 hrs (boscalid, Group 7) (BASF); EB, 2.5-4.5 oz; White mold, Suppression only for Botrytis gray mold, 5.5-10 oz; (Do not make more than 2 sequential applications before switching to a diff. MOA fungicide); Ground application is the preferred method to ensure thorough coverage.  10 DTH.

·        Equus 720 SST (EPA 72167-24-73220) REI 12 hrs (54% chlorothalonil, Group M5) (MAMA/FarmSaver); LB, EB, Botrytis vine rot 0.75 then 1-1.5 pts/A.  7 DTH. (OLF are Equus 500 ZN and Equus DF) (Do not use on greenhouse-grown food crops).

·        Evito 480 SC (EPA 62171-MS-001) NOT YET REGISTERED in NYS. REI 12 hrs. (fluoxastrobin, Group 11) (Arysta). Primarily for EB* (3.8 fl oz/A) and suppression of LB (3.8 fl oz/A). (Do not use alone for EB* control; Alternate every application of Group 11 fungicide with at least 1 application of an effective fungicide with a different MOA; experience shows that Group 11 fungicide should be tank mixed with a good protectant like chlorothalonil to deal with fungicide resistance issues).  7 DTH.

·        Evolve (EPA 7501-178) REI 24 hrs (thiophanate-methyl (Group 1), mancozeb (Group M3), cymoxanil (Group 27) (Gustafson/Bayer); Seed treatment to prevent spread of LB, Fusarium dry rot, Rhizoc. Stem canker and Blk scurf, and Silver scurf, 0.75 per 100 lbs cut seed pieces.  0 DTH.

·        Firewall (EPA 80990-4) REI 12 hrs (Streptomyces sulfate, Group 18) (United Phosphorus); Bac. soft rot and Blackleg, 100ppm, soak cut seeds in solution and add fungicide for fungal dis. control.  0 DTH.

·        Flouronil (EPA 55146-81) REI 48 hrs (mefenoxam, Group 4 + chlorothalonil, Group M5) (Nufarm); Foliar LB, EB, 2 lb; Storage rots, Pythium leak* and Pink rot* resistance concern, 2 lb at flowering and another 2 wks later.  14 DTH.

·        Forum 4.18 SC (EPA 241-427) REI 12 hrs(43.1% dimethomorph, Group 15, replaces Acrobat 50WP) (BASF); LB, 4-6 oz/A; Tuber blight suppression, 6 oz/A. (Must be tanked mixed with protectant; do not make more than 2 sequential applications before alternating with another material for specific control of LB for at least one application; Do not exceed 30 oz/A/growing season; May be applied after vine killing).  4 DTH.

·        Fosphite (EPA 68573-2) REI 4 hrs (53% mono- and dipotassium salts of Phosphorous Acid, Group 33) (JH Biotech); Foliar, Pink rot, Late blight, 3-5 qts/min. 20 gal/A, Do not use at intervals of less than 3 days; Do not apply Fosphite foliarly to plants treated with copper at less than 20 day interval.  0 DTH.

·        Fungi-Phite (EPA 73771-1) REI 4 hrs (45.5% mono- and di-potassium salts of phosphorous acid) (Biagro Western Sales); LB foliar spray 1-2 qt/A in a minimum of 20 gal; Seed piece spray, LB, mix 0.4 quart/2 qt water to treat 2 tons of potato with 1 gal solution.  0 DTH.

·        Gaucho-MZ (EPA 7501-184) REI 24 hrs (1.25% imidacloprid + 6% mancozeb, Group M3) (Gustafson/Bayer); Seed piece treatment Fusarium dry rot and insect control, 0.5-0.75 lb per 100 pounds of cut seed pieces.  0 DTH.

·        Gavel 75DF (EPA 62719-441) REI 48 hrs, *Restricted, toxic to fish; (zoxamide 8.3%, Group 22 and mancozeb 66.7%, Group M3) (Gowan); LB, EB, 1.5-2 lb; (Do not make more than 6 applications or more than 12 lb per A per crop).  3 DTH.

·        Gem 500 SC (EPA 264-826) REI 12 hrs (42.6% trifloxystrobin, Group 11) (Bayer) (No aerial application in NYS) EB*, 2.9-3.8 fl oz; LB 3.8 fl oz in a tank mixed with 75% of a protectant fungicide; Do not use alone for EB* control; Do not make more than 1 foliar application before switching to fungicides with diff. MOA, other than Group 11.  7 DTH.

·        Headline 2SC (2.09 lb ai/gal) (EPA 7969-186) REI 12 hrs (No aerial application in NYS) (23.6% pyraclostrobin, Group 11) (BASF) Blk Dot, EB*, 6-9 fl oz; LB, 6-12 fl oz. (Do not use alone for EB* control; Do not make more than 1 application before alternating with a fungicide with a diff. MOA).  3 DTH.

·        Helena ProPhyt (EPA 42519-22-AA-5905) REI 4 hrs (potassium phosphite, Group 33) (Helena); Foliar LB, 4 pt/A plus protectants like mancozeb (3 DTH); In-Furrow Storage rots (pink rot, leak), 4-10 pt + mefenoxam 11.6-13 fl oz (14 DTH); Post harvest (LB and Pink rot) 13 fl oz to ½ gal water sprayed to ton of potatoes. (see comments under use of Phostrol for postharvest use).  0 DTH. (Do not apply to plants under water stress).  0/3/14 DTH.

·        Initiate DF (EPA 34704-874) REI 12 hrs, (chlorothalonil, 90%, Group M5) (Loveland); EB, LB, Botrytis vine rot, 5/8-1 ¼ lb/A. 7 DTH.

·        JMS Stylet-Oil (EPA 65564-1) REI 4 hr, OMRI (paraffinic oil, Not classified) (JMS Flower Farms); Alternaria blight, PM, mites, whiteflies, 3-6 qt/A.  0 DTH (may be used in GH; see label for compatibility information)

·        Kentan DF (EPA 80289-2) REI 24 hr, (copper hydroxide 61.3% = 40% metallic cu, Group M1 (Isagro); EB, LB, 1-4 lb/A.  0 DTH. May be used for greenhouse crops on label.

·        Kphite (EPA 68573-2) REI 4 hrs. (53% Mono & di-potassium salts of phosphorous acid, Group 33) (Plant Food Systems); Foliar LB and Pink Rot, 1-3 qt in 20 gal water.  0 DTH.

·        Kocide 3000(EPA 352-662) REI 24 hr, (copper hydroxide 46.1% = 30% metallic copper equivalent, Group M1) (Dupont); EB, LB, 0. 5-1.75 lbs.  0 DTH. (May be used for greenhouse crops on label; 1 level TBS per 1000 sq. ft. is equivalent to 0.5 lb per A).  See also Kocide 101 and Kocide 2000.

·        Kumulus DF (EPA 51036-352) OMRI, REI 24 hrs. (80% sulfur, group M2) (Microflo). PM, red spider mite, 3-10 lb.  0 DTH.

·        M-Pede (EPA 53219-6) OMRI, REI 12 hrs (potassium salts of fatty acids, Group M) (Mycogen); (Field and greenhouse) insects and PM.  0 DTH.

·        Maneb 75DF (EPA 4581-371) REI 24 hrs (maneb, Group M3) (United Phosphorus) (also Maneb 80WP); EB, LB, 1.5-2.0 lb/A; Seed piece Fusarium decay, 1 lb/10 gal. water for dipping whole or cut seed.  3 DTH.

·        Manex (EPA 352-655) REI 24 hrs (maneb, Group M3) (Dupont); EB, LB, 0.8-1.6 qt/A.  3 DTH. Also registered for seed piece at 0.8 qt/10 gal. Store in cool place if held before planting.

·        ManKocide (EPA 1812-360) REI 24 hrs (mancozeb 15% + copper hydroxide 30% equivalent, Group M1 and M3) (Dupont/Griffin) EB, LB, 1.5-5 lb/A.  3 DTH.

·        Manzate75DF Pro-Stick (EPA 1812-414-352) REI 24 hrs (mancozeb, Group M2) (Dupont) Seed Treatment for Fus. Decay, seedborne Com Scab, 1 ¼ lb/50 gal; Foliage EB, LB, 1-2 lb/A. 2ee for suppression of Botrytis vine rot and black dot.  3 DTH.

·        Maxim MZ Potato Seed Protectant (EPA 100-944) REI 24 hrs (0.5% fludioxonil, Group 12 + 5.7% mancozeb, Group M3) (Syngenta); Seed piece treatment for Fusarium dry rot, seedborne Rhizoc, and seed piece borne Silver scurf; 0.5 lb per 100 lbs of seed pieces.  DTH does not apply.

·        Mertect 340F (EPA 100-889) REI 12 hrs (42.3% thiabendazole, Group 1, resistance common) (Syngenta); Post harvest treatment Fusarium tuber rot*, up to half of the fungus population may be resistant* to this fungicide; 0.42 fl oz to 2,000 tubers on a conveyor line with tumbling action.  If additional treatment is need before shipping, mist the tubers at the same rate or dip tubers for 20 sec. in a solution containing 0.42 fl oz per gallon of water. DTH does not apply.

·        Microfine Sulfur (EPA 6325-13-34704) REI 24 hrs (90% sulfur, Group M2) (Loveland); PM, 4-12.5 lb/A; two-spotted mites 4 – 12.5 lb/A. 0 DTH.

·        Microsperse (EPA 51036-14) REI 24 hrs. (90% sulfur, Group M2) (Microflo). PM, red spider mite, 3-5 lb/A.  0 DTH.

·        Micro Sulf (EPA 55146-75) OMRI, REI 24 hrs (Sulfur, Group M2) (Nufarm). PM, red spider mite, 5 lb/A0 DTH.

·        Microthiol Disperss (EPA 4581-373) REI 24 hrs (80% sulfur, Group M2) (United Phosphorus); PM, red spider mite, 5 lb/A0 DTH.

·        Moncoat MZ 7DP (EPA 71711-8) REI 24 hrs (1.5% flutolanil, Group 7, + 6% mancozeb, in tree bark formulation, Group M3) (Nichino, UAP); Seed piece treatment for suppression of Fusarium dry rot, Silver scurf, and Rhizoc. Stem canker. 0.75-1 lb per 100 lb cut seed.  0 DTH.

·        Moncut 70DF (EPA 71711-14(-10163) REI 12 hrs (flutolanil, Group 7) (Gowan); In-furrow treatment Rhizoc. Stem canker and suppression of Powdery Scab, 0.71-1.1 lb/ 1000 row feet.  († Not for use in Nassau or Suffolk Counties due to leaching into sandy soils).  0 DTH.

·        Mycostop (EPA 64137-5) OMRI, REI 4 hrs (Streptomyces griseoviridis, biological Group) (Verdera Oy) Product may be used in a variety of application methods per label; for a variety of root pathogens; 0.05-0.08 oz/1 lb seed piece treatment. 0 DTH.

·        Nubark Mancozeb (EPA 2935-496) REI 12 hr (mancozeb 6%, group M3) (Wilbur-Ellis); for seed piece treatment of whole or cut tubers, 1 lb/100 lb.  0 DTH.

·        Nu-Cop 50WP (EPA 45002-7) REI 24 hrs (77 % cupric hydroxide, equiv. 50%) (Albaugh) OMRIEB, LB, 1-4 lb/A.  Approved for greenhouse and shadehouse crops on label. 0 DTH.  See also Nu-Cop 3L and Nu-Cop HB.

·        Omega 500F

·        Oxidate (EPA 70299-2) OMRI, REI 1 hr (hydrogen peroxide) (BioSafe Systems); Fus. Dry rot (seed), 2 ½ fl oz/gal; EB, LB, 40-128 fl oz/100 gal. 0 DTH.

·        PCNB (Pentachloronitrobenzene) See Blocker or Terraclor

·        Penncozeb 75 DF (EPA 4581-370) REI 24 hrs (mancozeb, Group M3) (United Phosphorus) Seed Treatment for Fus decay, seedborne Com Scab, 1 ¼ lb/50 gal; Foliage EB, LB, 0.5-2 lb.  3 DTH.

·        Phostrol 53.6SC (EPA 55146-83) REI 4 hrs (Na, K, NH4 phosphorous acid, Group 33) (Nufarm); in-furrow suppression of Pink rot and Pythium leak use 3.75-10 pt plus 11.6-13 fl oz of Ultra Flourish brand of mefenoxam; additional applications of Phostrol with Flouronil may be necessary under severe disease conditions; Foliar applications for LB (may be mixed with LB products), and suppression of storage rot such as Pink rot and Pythium leak, 2.5-10 pt in minimum of 20 gal water/A; Post harvest treatment for Russet potatoes for processing ONLY, for Pink rot and late blight, 0.1 gal in 0.5 gal. of water per 2,000 lbs of potato as a spray, with complete coverage.  0 DTH.

·        PM223 (GRAS, exempt from EPA registration (3% protein-polysaccharide complex with fir bark) REI none (Global Protein Products); potato seed piece treatment, apply to cut seed @ 0.4 lb/cwt. A corn protein used to suberize and dry cut tuber surfaces. 0 DTH.

·        Polyram 80DF (EPA 7969-105-34704) REI 24 hrs (metiram, Group M3) (Loveland, BASF); EB, LB, 1.5-2 lb.  3 DTH.

·        Potato Seed Treater PS (8%) (EPA 2935-539-34704) REI 24 hrs (8% mancozeb, Group M3) (UAP, Loveland) or 6% formulation (EPA 2935-541-34704) (6% mancozeb, Group M3); to suppress Fusarium sambucinum seed piece decay, use 1 lb/100lb of cut or whole seed for 8% or 1 to 1 1/3 lb for 6% dust.  0 DTH.

·        Presidio (EPA 59639-140) REI 12 hrs. (fluopicolide, Group 43) (Valent); LB, Pink rot ?

·        Prev-Am (EPA 72662-3) REI 12 hrs (sodium tetraborohydrate decahydrate = borax) (Citrus Oil); PM, LB, 50 fl oz/100 gal.  0 DTH.

·        Previcur Flex 500 SC (EPA 264-678) REI 12 hrs, †Restricted use (propamocarb, Group 28, plus protectant Group M3 or M5) (Bayer); LB, EB, 0.7-1.2 pt plus protectant.  14 DTH.

·        Prophyt see Helena Prophyt

·        Quadris F 2SC (EPA 100-1098) REI 12 hrs (azoxystrobin, Group 11) (Syngenta); Foliar EB*, LB, Blk dot, 6.2-15.4 fl oz (Do not use alone for EB* control; Do not apply near apple trees; Do not make more than 1 application before switching to a fungicide with a diff. MOA and no more than 6 applications per season) (14DTH); In-furrow Rhizoc., Silver scurf, 0.40-0.80 fl oz/1000 row feet (If Quadris or Amistar is used in-furrow, the first foliar application for the season should be with a fungicide with a diff. MOA).  0 DTH.

·        Quadris Opti F 5.5SC (EPA 100-1171) REI 12 hrs (azoxystrobin + chlorothalonil, Group 11 + M5) (Syngenta); EB ok because used as a mixture, LB, Blk dot, 1.6 pt; Do not apply near apple trees; Do not make more than one foliar application before switching to a fungicide with a diff. MOA, and do not make more that 6 foliar applications per season.  14 DTH.

·        Quadris Ridomil Gold co-pack of Quadris and Ridomil (EPA 100-1243) REI 0 hrs (is soil incorporated) (azoxystrobin 22.9% and mefenoxam 49%, groups 11 and 4) (Syngenta); Rhizoc, Black dot, Pythium leak*, Pink rot* (only effective if sensitive isolates of these fungi are present), 0.82 fl oz per 1,000 row ft.  0 DTH.

·        Rampart (EPA 34704-924) REI 4 hrs (Mono- and dipotassium salts of phosphorous acid, Group 33) (Loveland); Foliar Generic label for late blight and Pink Rot, 1-4 quarts in a minimum of 20 gal water/A; do not apply at intervals less than 3 days0 DTH.

·        Ranman 400 SC, (EPA 71512-3) REI 12 hrs (cyazofamid, Group 21) (ISK, FMC); Foliar, LB, 1.4-2.75 fl oz/A; Tuber blight, 2.75 fl oz/A, make last 2-3 applications applied weekly prior to desiccation. (Alternate Ranman with of fungicide with a different MOA; tank mix with an organosilicone surfactant when water volumes are up to 60 gal/A).  7 DTH.  For In-furrow pink rot (note: not on PIMS old label), apply 0.42 fl oz per 1,000 linear ft of row in a minimum of 5 gal water per acre.  Apply using a 6 to 8-inch ban directly over the seed piece prior to furrow closure; a side dress application of Ranman in combination with a phosphoric acid product like Phostrol may be applied for additional control; may also be applied with mefenoxam product if mefenoxam-resistant* strains of P. e. are not present.

·        Reason 500SC (EPA 264-695) REI 12 hrs (fenamidone, Group 11) † Restricted use, not for sale or use in Nassau or Suffolk Co. (Bayer); EB*, LB and Black Dot, 5.5-8.2 fl oz. (Do not make more than one application of product before switching to a fungicide with a diff. MOA14 DTH.

·         Reliable NOT YET REGISTERED in NYS

·        Revus Top (EPA 100-1278) REI 12 hrs (mandipropamid, Group 40 + difenoconazole, Group 3) (Syngenta); Blk dot, Brown Spot, EB, LB, PM (Erysiphe), Septoria L S., 5.5-7 fl oz/A (the addition of a non-ionic surfactant is recommended; do not make more than 2 consecutive applications before switching to an effective fungicide with a different MOA).  14 DTH.

·        Ridomil Gold SL (EPA 100-1202) REI 48 hrs (47.6% mefenoxam, Group 4) (Syngenta); see also Ultra Flourish (Nufarm); (Only for use at-plant-stage to prevent resistance development).  Preplant incorporated and surface application; Pythium leak*, Pink rot* (only effective if sensitive isolates of these fungi are present), 0.42 oz/1,000 linear row ft in 6-8 in. band.  A foliar application of Ridomil Gold Bravo at tuber initiation may be necessary.  0 DTH. See also Twist.

·        Ridomil Gold Bravo (EPA 100-800) REI 48 hrs (mefenoxam, Group 4 + chlorothalonil, Group M5) (Syngenta) see also Flouronil; EB, LB?, 2 lb; Storage rots, Pythium leak*, Pink rot* (only effective if sensitive isolates of these fungi are present), 2 lb at flowering and another 2 wks later.  14 DTH.

·        Rovral 4F (EPA 264-482) REI 24 hrs, also Rovral 50W (EPA 264-453); Rovral 75WG (EPA 264-689) (1-2 lb/A) (iprodione, Group 2 dicarboximides) (Bayer); EB, 1-2 pt; WM, 2 pt.  14 DTH.

·        Scala 400SC (EPA 264-788) REI 12 hrs (See Personal Protective Equipment Comments for NY) (pyrimethanil, Group 9) (Bayer); EB, 7 fl oz. (Use only in a tank mix with another fungicide effective for early blight control)7 DTH.

·        Sectagon 42 (EPA 61842-6) REI 48 hrs (not other safety requirements) (sodium methyldithiocarbamate, 42.2%) for soil applications (fumigant for suppression of Root knot nematodes, fungi (Verticillum dahliae), weeds and weed seeds and volunteer seeds) (Tessenderlo Kerley); apply 30-75 gal/A using injectors.  See label for specifics.

·        Serenade ASO (EPA 69592-12) (Bacillus subtilis, biological fungicide) OMRI, REI 4 hrs (AgraQuest); Field, EB, LB, 6 qts/A.  0 DTH.

·        Serenade MAX WP (EPA 69592-11) REI 4 hrs (Bacillus subtilis, biological fungicide) OMRI, (AgraQuest); Field and Greenhouse PM, WM, Gray mold, EB, LB 1-3 lb/A/100gal.  0 DTHPost harvest Silver Scurf 1-3 oz/ton of tubers.

·        Sonata (EPA 69592-13) REI 4 hrs (Bacillus pumilus, biological fungicide) OMRI (AgraQuest); Field and Greenhouse EB, LB, PM, WM, Gray mold, 2-4qt/A/100gal.  0 DTH.

·        StorOx (EPA 70299-2) OMRI, REI 1 hr (hydrogen peroxide, group M) (BioSafe Systems); Post harvest for Bac. Soft rot, EB, LB, Fusarium and SS, 1:25 (5 fl oz/gal), 1:50 (2 ½ fl oz./gal) to 1:100 (1 ¼ fl oz/gal), used in 1-2 gal of water per ton of tubers.  0 DTH.

·        Super Tin 80WP (EPA 1812-350) REI 48 hrs †Restricted† Use (fentin hydroxide, Group 30) (Griffin/Dupont); EB, LB suppression of CPB, 2.5-3.75 dry oz pack/A; also Super Tin 4L (EPA 1812-244); 4-6 fl oz.  7 DTH.

·        T-22 HC (EPA 68539-4) OMRI, REI 0 hrs (Trichoderma harzianum, biological fungicide) (also Plant Shield) (BioWorks); Seed treatment for Rhizoc. Stem canker and Blk scurf, 0.5-2 oz/ cwt cut or whole seed, applied as a dust or aqueous solution.  0 DTH.

·        Tanos 50DF (EPA 352-604) REI 12 hrs (famoxadone, Group 11 + cymoxanil, Group 27, must be tank mixed with a protectant) (Dupont); 2ee for Brown Spot (Alternaria alternata), 6 oz; EB ok because used as a mixture, 6 oz; LB, 6-8 oz (protectant can be mancozeb, chlorothalonil, metiram, etc.). (Do not apply more than 1 application before switching to a fungicide with a different MOA; Do not apply more than 6 applications of Tanos or other Group 11 fungicide per season).  14 DTH.

·        Terraclor F (EPA 400-453) REI 12 hrs (quintozene (PCNB), Group 14) (Chemtura); In-furrow for Rhizoc. Stem canker and blk scurf, 5.2-10.4 fl oz/1000 row feet; Band 5-10pt/A in 10-20 gal (34 in. row).  0 DTH.

·        That Flowable Sulfur (EPA 57538-5) REI 24 hrs. (Sulfur, Group M2) (Stoller); PM, 3-5 pts/A.  0 DTH.

·        Thiolux Jet (EPA 100-835) OMRI, REI 24 hrs (Sulfur, group M2) (Syngenta); PM, red spider mites, 3-10 lb; apply at first symptoms and thorough coverage is essential0 DTH

·        Thiophanate Methyl 85 WDG (EPA 72167-10-73220) REI 12 hrs (thiophanate-methyl, Group 1) (MAMA/Farm Saver); Wh. Mold, 0.8-1.2 lb/A.  21 DTH

·        Topaz (EPA 68573-2) REI 4 hrs. (53% mono & dipotassium salts of phosphorous acid, equivalent to 3.90 lbs, Group 33) (Agriliance); Foliar Late Blight, Phytophthora and Pythium, 1-3 qt /A0 DTH.

·        Tops MZ 8.5D (EPA 7501-157) REI 24 hrs (2.5% thiophanate-methyl (Group 1) + 6% mancozeb (Group M3) (Gustafson/Bayer); Seed piece treatment for Fusarium dry rot, Rhizoc. Stem canker and blk scurf, and Silver scurf, 0.75 lb/100 lb cut seed pieces.  0 DTH.

·        Tops-MZ-Gaucho (Potato seed piece treatment) (EPA 264-977) REI 24 hrs (1.25% imidacloprid, 2.5% thiophanate-methyl, 6% mancozeb) (Gustafson/Bayer); for insect control and Fusarium dry rot, Rhiz, silver scurf and reduce spread of LB while cutting seed, 0.75 lb/100 lb applied to cut seed pieces.  0 DTH.

·        Topsin M 70WSB (EPA 73545-18) REI 12 hrs (thiophanate-methyl, Group 1) (United Phosphorus); Wh. Mold 1-1 ½ lb/A (may be mixed with other fungicides for EB and LB).  21 DTH.

·        Trilogy (EPA 70051-2) OMRI, REI 4 hrs (70% clarified hydrophobic extract of Neem oil, biological) (Certis); Listed for multiple diseases including EB, Anthracnose, Botrytis and PM and various insects, 0.5-1% in 25-100 gal/A.  0 DTH.

·        Twist (EPA 100-1145) REI 48 hrs, but 0 REI when soil injected or soil incorporated. (mefenoxam, Group 4) (Syngenta); See label for details. See also Ridomil Gold

·        Ultra Flourish 2EC (EPA 55146-73) REI 48 hrs (mefenoxam, Group 4) (Nufarm); (Only for use at-plant-stage to prevent resistance development)Preplant incorporated and surface application; Pythium leak*, Pink rot*, (only effective if sensitive isolates of these fungi are present), 0.84 oz/1,000 linear row ft in 6-8 in. band.  A foliar application of Flouronil at tuber initiation may be necessary.  0 DTH.

·        Vapam HL (EPA 5481-468) REI 48 hrs. (sodium methyldithiocarbamate, 42%) (Amvac); a soil fumigant (liquid converted into a volatile fumigant) for weeds, nematodes ie. Root Knot (suppression only), Symphylids (garden centipede) and soilborne diseases including Rhizoctonia, Pythium, Phytophthora, Verticillium, Sclerotinia. Vapam is phytotoxic, so protect non-target plants.  See label for specifics.

·        Vydate C-LV † (EPA 352-532) REI 48 hrs (oxamyl, insecticide/nematicide) (Dupont); 24(c) label for In-furrow application of Vydate C-LV for suppression of Lesion, Stubby Root and Root Knot Nematodes of Potato (not for use in Suffolk or Nassau Co); also foliar application for insect control.  (Not for use on Long Island).  7 DTH.

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This summary is provided as a helpful guide to some of the products that are available for Potato Disease Control and is not a substitute for Pesticide Labels.  Refer to the 2009 Cornell Vegetable Guidelines or the product label before buying any product.  The label is the law!  Abbreviations: † = Restricted use pesticide (see label); M = Multi-site activity; OLF = Other labeled formulation; *EB= Fungicide resistance concern with product for this particular disease pathogen.

EB = Early blight, Alternaria solani; LB = Late blight, Phytophthora infestans; Brown spot and Black Pit = Alternaria alternata; Rhizoc = Rhizoctonia Black scurf and canker, Rhizoctonia solani; Silver scurf, Helminthosporium solani; BD = Black dot, Colletotrichum coccodes; Botrytis vine rot, Botrytis cinerea; Fusarium decay = Fusarium dry rot, Fusarium sambucinum, also F. coeruleum and F. graminearum; Common scab, Streptomyces scabies; WM = White mold, Sclerotinia sclerotiorum; Pythium leak, Pythium ultimum var. ultimum; PR = Pink rot, Phytophthora erythroseptica; Black leg, Erwinia spp. (primarily E. carotovora subsp. atroseptica and E. carotovora subsp. carotovora); PM = Powdery mildew, Erysiphe cichoracearum.

 

Overview of Potato Fungicide Roster

(underlined = labeled).T. A. Zitter JUN.09

Protectants/Mixing Partners (Field diseases listed)

·           M5 chlorothalonil = Applause, Bravo, Echo, Equus , Chlorothalonil 720, Initiate (EB, LB, BD, Botrytis vine rot)

·          M3 mancozeb = Dithane, Manzate, Penncozeb (EB, LB)

·          M3 maneb = Maneb 75DF, Manex (EB, LB)

·          M3 metiram = Polyram (EB, LB)

·          30 tin hydroxide = †Super Tin, †Agri Tin (EB, LB) (restricted use)

·          M1 fixed copper = Badge SC, Basic Copper Sulfate & 53 OMRI, Champ & Dry Prill, Champion WP, Kentan DF, Kocide, Cuprofix, Nu-Cop 50WP OMRI (EB, LB) (Also Cuprofix MZ Disperss, ManKocide)

·          Bio Bacillus subtilis = Serenade ASO (EB, LB), Serenade MAX and Sonata (Bacillus pumilis) OMRI (PM, WM, Gray Mold, EB, LB)(Seed, Silver scurf)

·          M Oxidate (hydrogen peroxide) OMRI (Seed, Fus.) (EB, LB)

Group 11 Strobilurins (QoI) and “others” (EB*, LB, BD) (Strobilurins are no longer effective for *EB* due to resistance)

·          11 Evito 480 SC (fluoxastrobin) NOT REGISTERED; (EB*, Supp. of LB)

·          11 Quadris, Amistar (azoxystrobin), (EB*, LB, BD), Quadris Opti (azoxystrobin + chlorothalonil) (EB ok with mixture, LB, BD)

·          11 Gem (trifloxystrobin) (EB*, LB), (No aerial application in NYS)

·          11 Headline (pyraclostrobin) (EB*, LB, BD), No aerial application in NYS)

·          11 Reason (fenamidone) (EB*, LB, BD) (Not on Long Island)

·                      11 Tanos (famoxadone + cymoxanil) (EB ok when TMIX with protectant, LB)

Others

·          7 Endura (boscalid) (EB, W Mold)

·          2 Rovral (iprodione) (EB, W Mold)

·          9 Scala (pyrimethanil) (EB) (must tank mix with protectant)

Late Blight (tank mix [TMix] and alt. with protectant)

·          27 Curzate (cymoxanil) TMix

·          28Previcur Flex (propamocarb) TMix

·          22 + M3 *Gavel (zoxamide + mancozeb) (also EB)

·          33 ALL for LB = Agri-Fos, Fosphite , Fungi-Phite, ProPhyt, Kphite, Phostrol, Rampart, Topaz (phosphorous acid)

·          15 Acrobat, Forum (dimethomorph) (TMix, LB, suppression of Tuber Blight.)

·          29 Omega (fuazinam, not labeled in NYS) (LB, WM)

·          11 + 27 Tanos (famoxadone + cymoxanil), TMix (LB)

·          11 Reason (fenamidone) (LB) † (Not on Long Island)

·          43 Presidio (fluopicolide) Coming (LB, Pink rot)

·          3 + 40 Revus Top (difenoconazole + mandipropamid) Coming (Blk Dot, Brown spot, EB, LB, PM (Erysiphe) Sept LS

·          21 Ranman (cyazofamid) (LB, Tuber blight)

·          M Prev-Am (borax) (LB)

·          Bli-Nix (rhamnolipid biosurfactant) (LB, Pythium?, Pink Rot ?)

White Mold

·          1 Topsin M thiophanate methyl (WM)

·          7 Endura (boscalid) (EB, W Mold)

·          2 Rovral (iprodione) (EB, W Mold)

·          Bio Contans (C. minitans) OMRI (WM)

Seed Piece Treatments (liquids and dusts; some are combinations for both insects and diseases)

·          Bio Agri-mycin 17, OMRI, Agric. Strep. (Soft rot, Black leg)

·          12 + Insect. CruiserMaxx (thiamethoxam + fludioxonil) liquid seed treatment (chewing and sucking insects and Fusarium dry rot, seedborne Rhiz. and silver scurf)

·          M3 Nubark Mancozeb (mancozeb) (Fus Seed piece decay)

·          M3 Potato Seed Treater PS (8%) or 6% (Fus. Rot) ( mancozeb)

·          M PM223 (protein) (seed suberization)

·          1 + M3 + 27 Evolve (thiophanate-methyl + mancozeb + cymoxanil) (LB, Fus, R, SS)

·          Insect. +M3 Gaucho MZ (imidacloprid + mancozeb) (Fus dry rot)

·          12 + M3 Maxim MZ (fludioxonil + mancozeb) (Fus, R, SS)

·          7 + M3 Moncoat MZ (flutolanil + mancozeb) (Fus, R, SS)

·          Bio T-22 HC OMRI (T. harzianum) (Rhiz)

·          Bio. Mycostop OMRI (S. griseoviridis)

·          1 + M3 Tops MZ (thiophanate-methyl + mancozeb); Insect. + 1 + M3 Tops MZ Gaucho (thiophanate-methyl + imidacloprid + mancozeb) (Fus, R, SS)

In-Furrow and soil treatments

·          Bio Actinovate AG or Actino-Iron OMRI (S. lydicus) (?)

·          11 Amistar, Quadris (azoxystrobin) (Rhiz, SS, BD)

·          11 Quadris + 4 Ridomil Gold ) (azoxystrobin + mefenoxam) (Rhiz, BD, Pythium, PR)

·          14 Blocker, Terraclor (quintozene) (Rhiz)

·          7 Moncut (flutolanil) (Rhiz, Powdery Scab suppression only (Not in Nassau or Suffolk Counties)

·          33 Agri-Fos, ProPhyt, Phostrol or OLP (Sto. Rots =  Pyth leak, Pink rot)

·          4 Ridomil Gold (mefenoxam) (Sto. Rots, Pyth*, PR*, Resistance concern) also Twist

·          4 Ultra Flourish (mefenoxam) (Sto. Rots, Pyth*, PR*, Resistance concern)

·          4 + M5 Ridomil Gold Bravo (mefenoxam + chlorothalonil) (Sto. Rots, Pyth, PR)

·          4 + M5 Flouronil (mefenoxam + chlorothalonil) (Sto. Rots, Pyth, PR)

·          21 Ranman (cyazofamid) (Pink Rot)

·          Vapam, Sectagon 42 (sodium methyldithiocarbamate) (nem, dis.)

·          Vydate C-LV (oxamyl) (Supp. lesion, stubby root, root knot nematodes (not for Suffolk or Nassau Co)

Post harvest Treatments

·          33 Fosphite, Phostrol, ProPhyt or OLP (LB, Pink Rot), Recommended for processing only)

·          Bio Bio-Save (Fus Dry rot, SS)

·          1 Mertect (thiabendazole) (Fus. Dry rot*, Resistance is concern)

·          Bio. Serenade MAX OMRI (SS)

·          M StorOx OMRI (hydrogen peroxide) (SS)

OMRI Listed Products (Most multi-site)

·          Bio Actinovate AG or Actino-Iron (S. lydicus) (?)

·          Bio T-22 (Trichoderma) (Rhiz)

·          Bio Mycostop (S. griseoviridis)

·          M1 Basic Copper Sulfate 53, Nu-Cop, (EB, LB)

·          M Organic JMS Stylet-oil (EB, PM, Insects)

·          Bio. Contans (Coniothyrium) (White Mold);

·          M Trilogy (neem oil) (EB, PM, insects)

·          Bio.Serenade ASO (Bacillus subtilis) (EB), Serenade MAX (EB)

·          Bio. Sonata (Bacillus pumilis) (EB)

·          M Oxidate (hydrogen peroxide) (EB, LB?)

·          M StorOx (hydrogen peroxide) (SS?)

T. A. Zitter June 2009