Botrytis Control in Blueberries: Conference Context and Core Thesis
Botrytis control in blueberries is most effective when treated as a system-level discipline shaped by microclimate, crop architecture, infection windows, microbiome, plant physiology, hygiene, and IPM strategy.
At the 14th International Blueberry Conference 2026 in Ożarów Mazowiecki, one of the notable sessions examined Botrytis control in blueberries as a system-level challenge shaped by microclimate, microbiome, plant physiology, and IPM rather than by spray decisions alone. In her presentation, Dr Emilia Mikulewicz, Founder and CEO of Cultiva EcoSolutions, argued that effective Botrytis cinerea control should be understood first as a system question, not only as a spray-program question.
The conference itself, organized by the Hortus Media team and the editorial team of jagodnik.pl, has become an established meeting point for the blueberry industry in Central and Eastern Europe. The 2026 edition gathered growers, advisors, researchers, suppliers, and other industry representatives from multiple countries, creating a setting where practical production challenges could be discussed at depth.
The programme also stood out for the calibre of its speakers and the quality of discussion, combining grower experience, technical advisory insight, and research-based perspectives relevant to commercial berry production.
Holding the conference in Poland is also particularly relevant. The country is one of Europe’s most important blueberry producers and a major supplier to European markets, which means discussions around disease pressure, production stability, and fruit quality are closely tied to real commercial realities.
Against that backdrop, the session focused on a simple but important idea. Botrytis cinerea problems rarely originate in the spray program itself. They usually originate in the production system.
Key Takeaways for Botrytis Control in Blueberries
- Botrytis control in blueberries begins with the production system, not only the spray programme.
- Microclimate around the tissue is the first line of defence.
- Risk is shaped by crop structure, infection windows, hygiene, microbiome, and IPM.
Why Botrytis Control in Blueberries Begins with the Production System
The central message of the presentation was straightforward.
Effective Botrytis cinerea management does not begin with choosing an active substance. It begins with understanding how the production system influences infection risk.
In blueberry production, disease outbreaks are rarely the result of a single factor. Instead, they tend to emerge when several conditions align in ways that favor infection and disease development.
When this happens, crop protection decisions are often forced into a reactive position. Interventions may still play an important role, but they are operating in an environment where infection conditions have already been created.
This perspective shifts the focus slightly upstream. Instead of asking only how to suppress the pathogen, the more relevant question becomes: what in the system is making infection easier in the first place?
How Botrytis cinerea Risk Develops in Commercial Blueberry Production
A key part of the discussion focused on how Botrytis cinerea risk develops within the crop environment.
Rather than presenting the disease as a simple pathogen–plant interaction, the presentation framed it as the outcome of several interacting conditions within the production system. These included factors such as plant architecture, infection windows during sensitive growth stages, inoculum pressure, hygiene practices, tissue susceptibility, and the overall consistency of crop protection decisions throughout the season.
What makes this perspective useful is that it avoids a common trap in crop protection: assuming that disease risk begins only when visible symptoms appear.
In reality, many enabling conditions often develop much earlier. Canopy structure, humidity patterns, and plant stress can gradually create an environment where infection becomes more likely long before the disease becomes visible in the field or during storage.
Understanding where and when those conditions emerge is often more valuable than reacting only after symptoms are observed.
Why Microclimate Matters in Botrytis Control for Blueberries
One of the clearest takeaways from the presentation concerned the role of microclimate around plant tissues.
In blueberry production, small changes in humidity, air movement, and canopy density can strongly influence how long plant surfaces remain wet. These micro-environmental conditions often determine whether spores are able to germinate and infection can establish.
For that reason, the presentation emphasized that microclimate management frequently acts as the first line of defense. This does not diminish the role of crop protection products, but it places them within a broader context.
When environmental conditions remain highly favorable for infection, even well-designed spray programs may struggle to deliver consistent results. Conversely, when the crop environment is managed in a way that reduces infection opportunities, disease pressure can often be moderated earlier in the process.
The Role of the Microbiome in Blueberry Botrytis Management
Another important theme of the presentation was the role of the microbiome in blueberry production systems.
Rather than presenting microbiological approaches as a simple alternative to conventional protection strategies, the discussion treated the microbiome as part of the ecological environment surrounding the crop.
Both the phyllosphere, which includes the microbial communities associated with plant surfaces, and the rhizosphere, the microbial environment around roots, were considered in this context.
These biological communities can influence disease development through several mechanisms, including microbial competition, induced plant resistance, and interactions that affect the microenvironment around plant tissues.
Framing the microbiome in this ecological way helps move the discussion beyond simplified narratives and toward a more realistic understanding of how biological processes interact with crop protection strategies.
Why Biological Solutions Can Underperform Against Botrytis
The presentation also touched on a question that many growers have encountered in practice: why biological solutions sometimes produce inconsistent results in the field.
Rather than attributing this entirely to product efficacy, the discussion pointed to several practical factors that can influence performance. These include environmental conditions such as UV exposure, temperature and humidity, interactions with other crop protection products, application timing, and handling conditions such as storage or formulation stability.
In many cases, these variables determine whether a biological tool can function under field conditions.
Looking at biological solutions through this lens reinforces the broader theme of the presentation: outcomes are rarely determined by a single input alone. They depend on how well different elements of the production system work together.
Strategic Implications for Commercial Blueberry Growers and Advisors
The presentation concluded by bringing the discussion together around three interconnected areas that influence long-term disease management in berry systems: microbiome, plant physiology, and integrated pest management (IPM).
Taken together, these elements form a framework that helps explain why some production systems experience recurring disease pressure while others maintain greater stability over time.
For growers and advisors, the implication is not to replace existing crop protection tools, but to position them within a broader agronomic decision framework.
In systems where crop structure, environmental conditions, plant health, and protection strategies are aligned, disease risk can often be moderated earlier in the production cycle.
That perspective formed the central message of the session at the International Blueberry Conference 2026. It also reflects a broader direction in modern horticulture, where crop protection is increasingly understood as part of an integrated production system rather than a set of isolated interventions.
For Teams Reviewing Disease Pressure in a Broader Production Context
In commercial berry production, recurring Botrytis pressure is rarely an isolated crop protection issue. More often, it reflects how microclimate, crop structure, irrigation, root-zone conditions, and operational timing are interacting across the system. Cultiva EcoSolutions advises growers and agribusiness teams on these interdependencies in blueberries and other high-value crops.
Where disease pressure, fruit quality, and commercial consistency require closer review, Cultiva EcoSolutions provides advisory support on production strategy, crop protection performance, and market-quality risk.
