Serenade OPTI

Fungicide

Serenade® Opti is a biological fungicide and bactericide that works in three different ways to fight disease-causing pathogens. Stopping harmful spores from germinating, it disrupts the cell membrane growth and inhibits attachment of the pathogen to the leaf. The multiple sites of action not only create an effective fungicide, but also make it very difficult for diseases to develop resistance.

Where to Buy
Chemical group(s)info_outline
44
Approved in
AK, AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY

Key Benefits

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Product Details

Active Ingredients
 
 
Active Ingredients
QST 713 strain of Bacillus subtilis 26.2 %
Chemical Group(s)
44
Formulation
26.2 % WP
Registration Number
0000264-01160-ZA-0000000
Herbicide SensitivityA = Acceptable, C = Caution, W = Warning. Environmental conditions may cause herbicide interactions different than indicated for a particular growing season.Herbicide ToleranceRatings are based on observations and research using herbicides at labeled and above labeled rates to simulate extreme environmental conditions, misapplication and adverse soil pH or organic content.
Effective Against

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  • Anthracnose
  • Blight, Alternaria Leaf
  • Blight, Bacterial
  • Blight, Botrytis
  • Blight, Botrytis Leaf
  • Blight, Brown Rot Blossom
  • Blight, Early
  • Blight, Fire
  • Blight, Late
  • Blotch, Purple
  • Blotch, Sooty
  • Botrytis
  • Canker, Bacterial
  • Canker, Citrus
  • Flyspeck
  • Fruit Drop, Post-Bloom
  • Head Drop, Sclerotinia
  • Leaf Drop, Sclerotinia
  • Melanose
  • Mold, Gray
  • Mold, White
  • Monilinia
  • Mummy Berry
  • Phomopsis
  • Powdery Mildew
  • Rot, Aerial Stem
  • Rot, Alternaria Fruit
  • Rot, Anthracnose Fruit
  • Rot, Bitter
  • Rot, Black
  • Rot, Black Crown
  • Rot, Bot
  • Rot, Botrytis Fruit
  • Rot, Botrytis Neck
  • Rot, Brown
  • Rot, Brown Fruit
  • Rot, Buckeye
  • Rot, Bull's-Eye
  • Rot, Pink
  • Rot, Sclerotinia Stem
  • Rot, Sour
  • Rot, White
  • Rust, Cedar Apple
  • Rust, Coffee Leaf
  • Sclerotinia
  • Shot Hole
  • Speck, Bacterial
  • Spot, Alternaria
  • Spot, Alternaria Leaf
  • Spot, Angular Leaf
  • Spot, Bacterial
  • Spot, Bacterial Leaf
  • Spot, Brooks
  • Spot, Greasy
  • Spot, Target
DisclaimerPerformance may vary based on weather, pest resistance, and application timing. Listed efficacy is not a guarantee of total control; follow Integrated Pest Management (IPM) practices for optimal results.
Registered Crops

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  • Almond
  • Apple
  • Apricot
  • Artichoke
  • Asparagus
  • Bean, Dry
  • Bean, Garbanzo
  • Bean, Green
  • Bean, Lima
  • Bean, Shell
  • Bean, Snap
  • Bean, Succulent
  • Beechnut
  • Beet
  • Berry
  • Blackberry
  • Blueberry
  • Brassica
  • Broccoli
  • Brussels Sprout
  • Bushberry
  • Butternut
  • Cabbage
  • Caneberry
  • Canola
  • Cantaloupe
  • Carrot
  • Cashew
  • Castor
  • Cauliflower
  • Celery
  • Cherry
  • Chestnut
  • Chickpea
  • Citrus
  • Coconut
  • Coffee
  • Collard
  • Cotton
  • Crabapple
  • Cranberry
  • Cucumber
  • Cucurbit
  • Currant
  • Eggplant
  • Elderberry
  • Filbert
  • Flax
  • Fruit, Pome
  • Fruit, Stone
  • Garlic
  • Ginger
  • Ginseng
  • Gooseberry
  • Grape
  • Grapefruit
  • Ground Cherry
  • Herb
  • Horseradish
  • Huckleberry
  • Kale
  • Kiwifruit
  • Kohlrabi
  • Lemon
  • Lentil
  • Lettuce
  • Loganberry
  • Macadamia
  • Mayhaw
  • Melon
  • Muskmelon
  • Mustard Greens
  • Nectarine
  • Nut Tree
  • Oil Seed Crop
  • Okra
  • Olive
  • Onion
  • Orange
  • Palm, Oil
  • Parsley
  • Pea, Dry
  • Pea, Split
  • Pea, Succulent
  • Peach
  • Peanut
  • Pear
  • Pecan
  • Pepper
  • Pistachio
  • Plum
  • Potato
  • Potato, Sweet
  • Prune
  • Pummelo
  • Quince
  • Radicchio
  • Radish
  • Rapeseed
  • Raspberry
  • Safflower
  • Sesame
  • Shallot
  • Soybean
  • Spice
  • Spinach
  • Squash
  • Strawberry
  • Sunflower
  • Tangelo
  • Tangerine
  • Tomatillo
  • Tomato
  • Turnip
  • Vegetable, Bulb
  • Vegetable, Corm
  • Vegetable, Fruiting
  • Vegetable, Leafy
  • Vegetable, Legume, Dried
  • Vegetable, Legume, Succulent
  • Vegetable, Root
  • Vegetable, Tuber
  • Walnut
  • Watermelon
DisclaimerRegistrations are subject to state-specific regulations. Always verify that your crop and location are listed on the current product label before use.
Labels
DisclaimerAlways check labels and local guidelines and laws to ensure appropriate usage.
Safety Sheets
DisclaimerAlways check labels and local guidelines and laws to ensure appropriate usage.
Use and Mixing
DisclaimerThe instructions for use and mixing described below are from the Environmental Protection Agency approved Federal Label. Always read and follow label instructions. Not all products are registered for use in every state. Please check with Bayer or your local Lead State Agency for product registration status. If you wish to find out if a product is registered in your state or for additional product information, send us an email or call 1-866-99-BAYER.
Additional Downloads
DisclaimerAlways check labels and local guidelines and laws to ensure appropriate usage.

0% Grower Financing

Increase your purchasing Power with Bayer Crop Protection 0% Grower Financing. Expires January 16, 2026.