Alternaria Leafspot

This disease is usually a problem only under very hot, wet conditions. Reduce the periods of leaf wetness to facilitate disease management. Thiophanate-methyl will not control Alternaria. The following fungicides are labeled in New York for the control of this disease on the plants specified:

azoxystrobin

Heritage

100-1093

4

Plants: catharanthus, chrysanthemum, geranium, and other plants (see label)

Comments: User should conduct small-scale tests to ensure safety when applying to plants not listed on the label. Conduct trials before using in a tank mix with any material. Do not use a silicone-based surfactant. For resistance management, do not make more than three sequential applications of Heritage—alternate with two applications of a non-strobilurin fungicide.

chlorothalonil

Concorde DF

72167-25-1812

12

Concorde

72167-24-1812

12

Daconil Ultrex 82.5%

50534-202-100

12

Daconil Weather-Stik 54F

50534-209-100

12

Echo Ultimate T&O

60063-3

12

Echo 90DF

60063-10

12

Echo Zn T&O

60063-4

12

Echo 720 T&O

60063-7

12

Manicure 6 Flowable

50534-209-100

12

Pegasus L

60063-7-81943

12

Countdown L&G

50534-216-100

12

Quali-Pro Chlorothalonil 720 SFT

72167-24-73220

12

Quali-Pro Chlorothalonil DF

72167-25-73220

12

Quali-Pro Chlorothalonil 500 ZN

72167-27-73220

12

Plants: carnation, daisy, fatsia, geranium, hydrangea, marigold, ming aralia, pansy, poinsettia (before bract formation), statice, zinnia

chlorothalonil +

Spectro 90WDG

1001-72

12

  thiophanate-methyl

Plants: aster, azalea, begonia, calathea, camellia, carnation, chrysanthemum, daffodil, daisy, exacum, geranium, gerbera, gladiolus, gypsophila, hydrangea, impatiens, iris, lily, marigold, narcissus, pansy, petunia, phlox, poinsettia, rose, statice, tulip, zinnia

Comments: For use on annual and perennial flowers. Label cautions grower to conduct tests for safety to plants not mentioned on the label before widespread use. Spectro is not recommended for use on Swedish ivy, Boston fern, or Easter cactus (Hatiora gaertneri). Do not apply Spectro to Pittosporum or Schefflera more than once to avoid phytotoxicity.

copper hydroxide

Champ Dry Prill 57.6%

55146-57

24

Champion 77WP

55146-1

24

Nu-Cop 50WP

45002-7

24

Nu-Cop 3L

42750-75

24

Nu-Cop HB

42750-132

24

Comments: For control of bacterial and fungal diseases. Note label precautions for treating some crops. Apply to a small number of plants and observe for 7–10 days for symptoms of phytotoxicity before commercial use. Do not tank mix with Aliette without buffering the spray solution.

copper hydroxide plus mancozeb

Junction 15DF

1812-360

24

Comments: The pH of the spray solution should be less than 6.5 to avoid phytotoxicity. Label cautions grower to conduct small-scale tests on other ornamentals not listed on the label for signs of phytotoxicity before commercial use.

copper sulfate pentahydrate

Phyton 27 21.36%

49538-2

24

Plant: impatiens

fludioxonil

*Medallion 50% WP

100-769

12

Comments: Use up to 30 oz. *Medallion per 1,000 sq. ft. (80 lb. product/acre) per year or crop cycle. Do not apply to leatherleaf fern. Drench applications to impatiens or New Guinea impatiens or geraniums may cause stunting or chlorosis. Use with extreme caution as a foliar spray on geraniums, especially at high growing temperatures. Test the recommended rates on a small number of plants for phytotoxicity before widespread use. On Long Island, for use in enclosed structures only.

iprodione

*26GT (Bayer)

432-888

12

*Chipco 26019 Flo (Bayer)

432-888

12

*Sextant 23.3% EC

432-888-59807

12

*Chipco 26019 Brand (Bayer)

432-889

12

*Chipco 26019 N/G

432-889

12

*Iprodione Pro 2SE

51036-361

12

*Lesco 18-Plus

51036-361-10404

12

*Sextant

51036-361-59807

12

Comments: Make no more than four foliar applications per year, totaling no more than 10 qt. product/acre/year, with no more than 2.5 qt. or 2.5 lb. product/acre in any appication. Users should apply a label rate on a small number of plants to test for plant safety. Do not use on spathiphyllum, and do not use as a soil drench on impatiens or pothos.

kresoxim methyl

†Cygnus fungicide

7969-124

12

Comments: For resistance management, do not make more than eight greenhouse applications per year. Do not make more than two sequential applications of †Cygnus. Then alternate to an equal number of sequential applications of a non-strobilurin fungicide (i.e., do not rotate with *Compass O, Heritage or *Insignia). Do not use organosilicone-based adjuvants with †Cygnus.

mancozeb

Protect DF

1001-77

24

Plants: African violet, ageratum, aglaonema, ajuga, allium, anthurium, asparagus fern, azalea, baby’s breath, begonia, bougainvillea, calathea, camellia, canna lily, carnation, China aster, Christmas cactus, chrysanthemum, cordyline, Crassula argentea, dahlia, dieffenbachia, dracaena, dusty miller, Easter lily, fern, ficus, fittonia, gardenia, gazania, geranium, gladiolus, helichrysum, hibiscus, hollyhock, iris, ivy, lavendar cotton, lily, Liriope muscari, nephthytis, nicotiana, Norfolk Island pine, orchids, osmanthus, palms, pansy, pentas, peony, peperomia, periwinkle, petunia, philodendron, phlox, pick-a-back, pilea, pittosporum, plums, poinsettia, prayer plant, primrose, rhododendron, rose, schefflera, senecio, snapdragon, statice, strawflower, sunflower, syngonium, Transvaal daisy, velvet plant, verbena, vinca, yucca, zebra plant, zinnia, zygocactus. See label for additional plants.

mancozeb

*Dithane T/O Rainshield 75%

62719-402

24

Lesco Mancozeb DG

62719-402-10404

24

*Dithane F-45 Rainshield T&O

62719-396

24

*Fore WSP Rainshield T&O

62719-422

24

*Fore Rainshield T&O

62719-388

24

Pentathlon DF 75%

1812-414

24

*Pentathlon LF 37%

1812-416

24

Comments: Test a small section of the plant to be treated if the plant is not listed on the label: user assumes all risk in treating unlabeled plants. Adding a spreader-sticker may improve performance. For *Dithane F-45, must use product with label listing ornamentals.

pyraclostrobin

*Insignia Fungicide

7969-184

12

Plants: See label for extensive list of tolerant species; test for phytotoxicity on a small sample of plants before widespread use.

Comments: Do not use on impatiens or petunias when in flower. Do not use with organosilicone-based adjuvants. For resistance management, make no more than two sequential applications of *Insignia before alternating with a material with a different mode of action (i.e. do not rotate with *Compass O, †Cygnus, or Heritage).

thiophanate-methyl

*Zyban WSB 79.6%

58185-31

12

plus mancozeb

Plants: African marigold, aster, azalea, begonia, camellia, carnation, chrysanthemum, dahlia, geranium, impatiens, kalanchoe, pansy, petunia, phlox, poinsettia, rhododendron, rose, snapdragon, stocks, verbena, zinnia. See label for additional plants.

Comments: Do not use on French marigold or gloxinia.

triflumizole

*Terraguard 50W

400-433

12

For use on ornamentals grown in greenhouses. Do not use on impatiens plugs; for impatiens transplants do not exceed 2 oz/100 gal rate. For all bedding plant plugs, do not exceed 2 oz/100 gal.

Anthracnoses

(caused by Gloeosporium, Colletotrichum, Elsinoe, etc.)

Anthracnose diseases are spread by splashing and develop under conditions that retain a film of water on the foliage. Keep foliage dry by watering early in the day and promoting good air circulation. The following fungicides are labeled in New York for the control of anthracnoses on the plants specified.

azoxystrobin

Heritage

100-1093

4

Comments: User should conduct small-scale tests to ensure safety when applying to plants not listed on the label. Conduct trials before using in a tank mix with any material. Do not use a silicone-based surfactant. For resistance management, do not make more than three sequential applications of Heritage—alternate with two applications of a non-strobilurin fungicide.

chlorothalonil

Concorde DF

72167-25-1812

12

Concorde

72167-24-1812

12

Daconil Ultrex 82.5%

50534-202

12

Daconil Weather-Stik 54F

50534-209-100

12

Echo Ultimate T&O

60063-3

12

Echo 90DF

60063-10

12

Echo Zn T&O

60063-4

12

Echo 720 T&O

60063-7

12

Manicure 6 Flowable

50534-209-100

12

Pegasus L

60063-7-81943

12

Countdown L&G

50534-216-100

12

Quali-Pro Chlorothalonil 720 SFT

72167-24-73220

12

Quali-Pro Chlorothalonil DF

72167-25-73220

12

Quali-Pro Chlorothalonil 500 ZN

72167-27-73220

12

Plants: aglaonema, camellia, dieffenbachia, ficus, Ming aralia, pansy, peperomia, poinsettia (before bract formation), statice. See labels for additional plants.

chlorothalonil plus

Spectro 90WDG

1001-72

12

  thiophanate-methyl

Plants: aechmea, aglaonema, artemisia, aster, begonia, birdsnest fern, bougainvillea, caladium, calathea, camellia, carissa, carnation, Christmas cactus, chrysanthemum, crassula, croton, daffodil, daisy, dianthus, dicentra, dieffenbachia, dracaena, episcia, exacum, false aralia, fatsia, ferns, ficus, fittonia, geranium, gerbera, gladiolus, gynura, gypsophila, hollyhock, hoya, ivy, lily, lipstick plant, maranta, marigold, ming aralia, narcissus, oyster plant, palms, pansy, peperomia, petunia, philodendron, phlox, pilea, poinsettia, pothos, rose, sansevieria, statice, syngonium, ti plant, tolmeia, tulip, yucca, zebra plant, zinnia

Comments: For use on annual and perennial flowers. Label cautions grower to conduct tests for safety to plants not mentioned on the label before widespread use. Spectro is not recommended for use on Swedish ivy, Boston fern, or Easter cactus (Hatiora gaertneri). Do not apply Spectro to Pittosporum or Schefflera more than once to avoid phytotoxicity.

copper hydroxide

Champ Dry Prill 57.6%

55146-57

24

Champion 77WP

55146-1

24

Nu-Cop 50WP

45002-7

24

Nu-Cop 3L

42750-75

24

Nu-Cop HB

42750-132

24

Comments: For control of bacterial and fungal diseases. Note label precautions for treating some crops. Apply to a small number of plants and observe for 7–10 days for symptoms of phytotoxicity before commercial use. Do not tank mix with Aliette without buffering the spray solution.

copper hydroxide plus mancozeb

Junction 15DF

1812-360

24

Comments: The pH of the spray solution should be less than 6.5 to avoid phytotoxicity. Label cautions grower to conduct small-scale tests on other ornamentals not listed on the label for signs of phytotoxicity before commercial use.

copper salts of fatty and rosin acids

Camelot 58EL

1812-381-499

12

Plant: begonia

copper sulfate pentahydrate

Phyton 27 21.36%

49538-2

24

Plant: azalea

kresoxim methyl

†Cygnus fungicide

7969-124

12

Comments: For resistance management, do not make more than eight greenhouse applications per year. Do not make more than two sequential applications of †Cygnus. Then alternate to an equal number of sequential applications of a non-strobilurin fungicide (i.e., do not rotate with *Compass, Heritage or *Insignia). Do not use organosilicone-based adjuvants with †Cygnus.

mancozeb

Protect DF

1001-77

24

Plants: aglaonema, anthurium, aucuba, azalea, begonia, bougainvillea, caladium, camellia, carissa, carnation, China aster, Christmas cactus, chrysanthemum, cordyline, croton, dahlia, daisy, dieffenbachia, dracaena, dusty miller, Easter lily, episcia, fatsia, fern, ficus, fittonia, geranium, gerbera, gypsophila, hemp-bowstring, hollyhock, hoya, iris, ivy, lily, Liriope muscari, maranta, nephthytis, Norfolk Island pine, orchids, osmanthus, palms, pansy, peperomia, periwinkle, philodendron, phlox, pick-a-back, pilea, pittosporum, poinsettia, pothos, prayer plant, primrose, rhododendron, rose, sansevieria, schefflera, snapdragon, statice, syngonium, ti plant, tolmeia, tulip, velvet plant, yucca, zebra plant. See label for additional plants.

mancozeb

*Dithane T/O Rainshield 75%

62719-402

24

Lesco Mancozeb DG

62719-402-10404

24

*Dithane F-45 Rainshield T&O

62719-396

24

*Fore WSP Rainshield T&O

62719-422

24

*Fore Rainshield T&O

62719-388

24

Pentathlon DF 75%

1812-414

24

*Pentathlon LF 37%

1812-416

24

Comments: Test a small section of the plant to be treated if the plant is not listed on the label: user assumes all risk in treating unlabeled plants. Adding a spreader-sticker may improve performance. For *Dithane F-45, must use product with label listing ornamentals.

pyraclostrobin

*Insignia Fungicide

7969-184

12

Plants: See label for extensive list of tolerant species; test for phytotoxicity on a small sample of plants before widespread use.

Comments: Do not use on impatiens or petunias when in flower. Do not use with organosilicone-based adjuvants. For resistance management, make no more than two sequential applications of *Insignia before alternating with a material with a different mode of action (i.e. do not rotate with *Compass O, †Cygnus, or Heritage).

thiophanate-methyl

3336-WP 50%

1001-63

12

3336-F 42.5%

1001-69