As harvest progresses, wet conditions can increase the risk of Botrytis and other rots, especially when fruit remains on the vine longer than expected. Botrytis cinerea produces enzymes and compounds that can significantly compromise wine quality if not addressed quickly. The ATPGroup team has outlined practical steps to help winemakers minimize the impact of infected fruit and protect wine style.

Key Strategies

1. Assess & Plan. Benchmarks: <10% is manageable, >20% needs aggressive intervention. Test laccase levels if concerned.
2. Pick and process cold. Lower temperatures slow the activity of Botrytis-related enzymes.
3. Protect early. Add SOâ‚‚ as soon as possible to minimize oxidation and microbial growth.
4. Use tannins wisely. Tannin additions help block damaging enzymes and protect color and flavor.
5. Settle quickly. Minimize juice contact with infected lees by clarifying rapidly and efficiently.
6. Ferment strong. Choose robust yeast and provide generous nutrition to overcome nutrient loss caused by rot.
7. Support aromatics. Since pre-press enzymes should be avoided, consider post-fermentation enzyme additions to boost aroma intensity.
8. Check filterability. Botrytis increases glucans and pectins that can clog filters, so testing and treatment may be necessary.

VIEW FULL BOTRYTIS PROTOCOL

Every lot of fruit is different, and the best strategy depends on the level of infection and your winemaking goals. Early, decisive action is the key to reducing Botrytis risk and ensuring a clean, stable wine.

ATPGroup’s team of enologists and technical specialists can help design a Botrytis management program suited to your wine style, fruit condition, and cellar workflow. For more information, contact your ATPGroup Technical Representative or Enology Products Specialist, call (707) 836-6840, or visit www.ATPGroup.com.

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ATPGroup was founded as a family business in 1991. Now a leading supplier to the wine, beer, food, and pharmaceutical markets, we strive to provide solutions and create value for our customers in each of the industries we serve. The company offers an unparalleled range of high-quality products and services including winemaking & cellar products, brewery supplies, glassware, cleaning & sanitation solutions, tartaric acid, cream of tartar, and Rochelle salt. Its team is made up of industry veterans, cellar masters, and product specialists who provide technical expertise in their respective fields. With warehouses across the country, the company is strategically located to serve customers throughout the U.S., Canada, and Mexico.