How Will The 2026 “Super El Niño” Impact Your Bacterial Control Strategy?
Wetter Conditions Can Increase Disease Pressure
Growers know bacterial diseases don’t appear because of a weather forecast. They develop when environmental conditions allow pathogens to spread.
Frequent rain events, prolonged humidity, and wind-driven storms can move already present bacteria throughout fields and orchards while keeping fruit and foliage wetter, longer. Under these conditions, bacterial colonies quickly multiply and disease symptoms can build quickly, making prevention far easier than recovery.
AgriPhage® bacterial control options will help lower the overall inoculum level of harmful pathogens in the environment. Remember, just because you’re not seeing symptoms does not mean you don’t have a bacterial problem.
Spray Timing Matters More During Wet Seasons
When humidity and rain events increase and disease pressure increases, spray timing becomes just as important as product selection. Should you spray your various fungal and bacterial interventions before or after a storm? Will applications sprayed before a moisture event be washed away or lose efficacy? Can I combine certain treatments together for better timing?
Preventive applications of bacterial control products, like AgriPhage, made before conditions become favorable will generally provide better protection than attempting to stop disease after infections have become established. However, if applications before a rain event are not possible, sprays soon after moisture events are still highly recommended.
Closely monitor local forecasts, scout your fields and orchards regularly, and adjust application timing as necessary.
For more information on Agriphage spraying and mixing, click here.
Strengthen Your IPM Program
Integrated Pest Management works best when growers have multiple tools available and the flexibility to adapt throughout the season. We know you’ll need to combine your fungal, bacterial, and insect control together more often during high humidity periods. AgriPhage can be combined with MANY different products out there to give you the best chance at controlling pathogens that will lower your yields.
To find out which products can be safely applied with AgriPhage and to find the latest copy of our constantly updated compatibility list, please visit: www.AgriPhage.com
AgriPhage provides targeted biological control for bacterial diseases affecting tomatoes, apples, peaches, and citrus. Rather than replacing conventional management practices, it integrates into existing IPM programs to provide another mode of action while helping reduce reliance on traditional chemicals and antibiotics.
Because bacteriophages specifically target harmful bacteria, AgriPhage helps preserve beneficial microorganisms while giving growers another option for managing bacterial disease when environmental conditions increase pressure.
Four Crops Worth Watching
Several important specialty crops become more vulnerable as moisture increases.
Tomatoes
Warm temperatures combined with frequent rainfall create favorable conditions for Bacterial Spot and Bacterial Speck. Once established, these diseases can spread rapidly through the crop, reducing both fruit quality and marketable yield. Increase your spray frequency or concentrations of AgriPhage as you get close to harvest to keep lesions off the fruit.
Apples
Fire Blight remains one of the most significant bacterial diseases affecting apple production. While most growers think of fire blight as an issue that mainly causes damage in the Spring, warm wet weather during the rest of the growing season can cause increases in shoot blight infections, the inoculum for next year’s infection bloom. Careful monitoring, pruning, and timely AgriPhage applications later in the season are essential.
Peaches
Peach Bacterial Spot can become increasingly aggressive during rainy periods with prolonged leaf-wetting, damaging both leaves and fruit and reducing pack-out quality at harvest. AgriPhage can be applied right up to harvest to protect your yields when other products cannot be used. AgriPhage will not harm or cause damage to developing fruit.
Citrus
Wind-driven rain is one of the primary ways Citrus Canker spreads through groves. Extended periods of wet weather often increase disease pressure and make consistent management more important throughout the season.
Preparation Still Makes the Difference
Every growing season presents different challenges. El Niño may influence weather across many production regions in 2026, but local conditions, crop stage, and field history will continue to determine management decisions.
What growers can control is preparation.
Review your IPM program before disease pressure begins to build. Watch local weather forecasts, scout fields consistently, and be prepared to adjust spray timing as conditions change. Having a proactive disease management strategy that includes biological tools like AgriPhage can help protect crop health, preserve marketable yields, and provide greater flexibility when bacterial diseases become more active.
A wetter season doesn’t guarantee disease problems. But it is a good reminder that preparation, timing, and a well-balanced IPM program remain some of the most effective tools growers have.