When Conditions Turn Extreme
Hot, dry spells. Cold snaps and periods of high rain. Salty soils. These abiotic stressors take a toll on plant health and yield. Most inputs can’t protect plants from the environmental extremes that are becoming increasingly common every season.
Heat and Drought Protection for Resilient Crops
Heat Shield is a microbial treatment composed of multiple strains of endophytic fungi—the beneficial microbes that live inside the plant and help it adapt to harsh conditions. These fungi form a symbiotic relationship with the plant, improving tolerance to abiotic stress like heat, cold and salinity.
When Heat Shield is used in combination with Nutri-Cycle, the fungal endophytes work synergistically with the nutrient solubilizing microbes and give you a combined yield effect.
- What it targets
- Heat, cold, drought and salt stress.
- Where it fits
- Crop establishment and seasons with environmental stress.
- How it applies
- Seed treatment, in-furrow or foliar application.
Protection against stress every season
Endophytic fungi are beneficial fungi that live inside the plant. Heat Shield helps the crop adapt from the inside when weather and soil conditions turn harsh.
Hover over a card or select it to learn more.
How Heat Shield Works
Discuss your application- Uses endophytic fungi to boost stress tolerance from within
- Helps plants maintain growth and yield under heat, cold, drought and salt stress
- Enhances plant metabolism and water use efficiency during extreme conditions
- Proven in field trials to reduce canopy temperatures by up to 10 degrees F
- Improves emergence rates in low temperature environments
- Achieved a 93% overall success rate in third-party trials in high stress seasons
- Maintains a 67% win rate even under low-stress conditions
- Heat Shield helps your crops stay productive when weather and soil conditions try to shut them down.
Enhances crop resilience nutrient use efficiency
Heat Shield works within the plant itself, building resilience so crops thrive even in harsh conditions.
Summer 2025 field observations.
Application and carrier water
Heat Shield comes in 4-ounce bottles that treat 40 acres, with bulk sizes for seed-treatment applications.
- Compatible with most fertility and microbial programs.
- Well water is recommended. Chlorinated water must be dechlorinated before use.
- Contact Direct Biologicals for guidance on your application.
How is Heat Shield applied?
Heat Shield is available in 4 oz bottles that treat 40 acres for convenient field applications. Bulk sizes are available for professional seed treatment applicators.
What crops benefit most from Heat Shield?
It’s designed for use on field crops that face tough environmental conditions, especially where temperature swings or salinity are a concern. All plants tested have shown efficacy with the endophyte technology.
How quickly will I see results?
Growers often notice improved seed emergence and plant resilience over the course of the growing season, with consistent yield gains over time.
Can I use it with fertilizers or other biologicals?
Yes. Heat Shield is compatible with most fertility programs and microbial treatments. It’s designed to work alongside other inputs, not replace them.
Is it safe to use with chlorinated water?
It is most likely harmful to use rural water sources that have chlorine in them with any biological treatment, including Heat Shield. Well water is the preferred carrier. Rural water can be used with a suitable de-chlorinating agent in accordance with product specifications.
Is your crop ready for a tough season?
Heat Shield works inside the plant to improve resilience and deliver consistent results, no matter what the season throws at you.
Prefer to talk?
866.227.3129