Editor's note: This article was originally published in 2024 and has been updated with new information in 2025.

While you might spend less time in the sprayer during summer, cover sprays are crucial for your fruit's success! Just like your earlier sprays that tackle scab and powdery mildew, summer applications play a vital role in protecting quality fruit. With weather patterns becoming more unpredictable each year, keeping your developing fruit protected is essential.  

Good coverage with either Allegro^® or Captan L during those dog days of summer can ensure both excellent harvest quality and better storage life, giving you the best chance at maximizing your crop's value.

Captan L: for broad spectrum protection  

Captan L, a liquid formulation of Captan fungicide, joined the Syngenta portfolio in 2025 to support your resistance management practices. Captan L delivers the trusted protection you've come to expect from Captan, offering broad-spectrum control of summer diseases and providing a valuable rotation option in your fungicide program. At the registered rate of 2.02 L/ac (5 L/ha), Captan L protects against numerous diseases including apple scab, sooty blotch, fly speck, bitter rot, and black rot - and that's just a few of the labeled pests! To learn more about additional diseases controlled by Captan L and its re-entry intervals, please refer to the product label.
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What to know about Allegro

With its liquid formulation, activity on tough diseases, wide application window, and a generous application limit of five applications per year, Allegro® (Group 29) is a great option to break up your fungicide rotation. Check out the label or chart below for more information on how and when to use Allegro as part of your summer spray program.

Pest	Use rate	Comments
Control of:  Apple scab  Fly speck Sooty blotch	200-400mL/ac (0.5-1.0L/ha)	Begin applications before disease occurs and continue on a 7-14 day schedule. Use higher rate and shorter interval when disease pressure is high (warmer, wet weather)
Control of: Cedar apple rust Bitter rot Alternaria blotch Suppression of mites: Two-spotted spider mite, European red mite, Apple rust mite	300-400 mL/ac (0.75 – 1.0L/ha)	7-10 day schedule, shortening interval and high rate when pressure is high
Suppression of:  Black rot Brooks spot Quince rust	400 mL/ac (1.0L/ha)	When applying as a summer cover spray, apply on a 7 day schedule. Note: 28d PHI

Note that without prior experience in your orchard, and especially during periods of high humidity and high temperatures, it is not recommended to tank mix Allegro with mineral oils.  

Looking for a bit more on Allegro? 

Check out the video below as David Jefferson, Horticulture Specialist, explores how Allegro can be used throughout the season in your orchard.  




For more information contact your trusted retail partner or local Syngenta representative.

Always read and follow label directions. The Syngenta logo is a trademark of a Syngenta Group Company. Allegro^® is a registered trademark of ISK Biosciences Corporation. All other trademarks are the property of their respective owners.