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Silicone Adjuvant for Fungicide Spray
Trisiloxane fungicide adjuvant with fast-setting rainfastness — improves lower-canopy disease-zone coverage by 25–40% and locks in protection within 30–45 minutes, ahead of infection-period rain.
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Adjuvant Built Around the Disease-Control Weather Window
Silicone Adjuvant for Fungicide Spray is a trisiloxane adjuvant with a fast-setting film-forming component, developed specifically around the operational reality of fungicide timing: disease control depends on getting fungicide deposited and protected before an infection period begins, often a narrow weather-driven window that does not wait for the spray application to be convenient. The product's design priorities — rapid, complete canopy coverage and fast rainfastness — are chosen specifically to protect that timing.
At 0.025–0.05% v/v, the adjuvant reduces surface tension to approximately 21.5 mN/m, achieving thorough coverage across dense crop canopies where fungal pathogens such as rusts, powdery mildews, and Septoria characteristically establish first in lower, shaded, or interior leaf positions that upright sprays often under-treat. Field coverage assessments show a 25–40% improvement in lower-canopy leaf coverage compared to an untreated spray solution, directly addressing the canopy zones where many foliar diseases begin.
For translaminar and locally systemic fungicide chemistries (triazoles, strobilurins, SDHIs), the adjuvant also promotes limited movement of the active ingredient within leaf tissue, extending protection to newly emerged growth that was not directly contacted by the spray — a meaningful benefit during the rapid canopy expansion phases common in cereal and row-crop disease programs.
Rainfastness is a specific design priority: the film-forming component sets within 30–45 minutes of application, a critical margin when fungicide timing is dictated by an approaching rain event that also happens to be the infection risk period the fungicide is meant to prevent. Field trials simulating rainfall shortly after application show significantly better disease control retention with this adjuvant compared to unmodified fungicide sprays under the same rain timing.
The adjuvant is validated across the major foliar fungicide classes used in cereal, row-crop, and specialty-crop disease programs, and remains low-foaming and compatible with standard boom, airblast, and aerial application equipment used in fungicide spray programs.
Why Fungicide Programs Choose This Adjuvant
Mechanism of action
Silicone Adjuvant for Fungicide Spray reduces surface tension to approximately 21.5 mN/m, driving spray droplets to spread across and around leaf surfaces at all canopy depths, including the lower and interior foliage positions where disease pressure often establishes first.
For translocated fungicide chemistries, the same low surface tension supports limited movement of the active ingredient within leaf tissue after deposition, extending a measure of protection to leaf area that expanded after the original spray contact.
The film-forming component works on a separate timescale: as the spray deposit dries, this component cross-links into a rain-resistant film within 30–45 minutes, specifically timed to complete before the rain events that frequently accompany the humid conditions under which fungal infection periods occur.
Disease control retention recovers quickly once the 30–45 minute rainfast window has passed before rain arrives.
Product specifications
| Parameter | Value |
|---|---|
| Appearance | Clear to slightly hazy liquid |
| Composition | Trisiloxane surfactant + fast-set film-forming component |
| Viscosity (25°C) | 22 – 38 cSt |
| Density (25°C) | 1.00 – 1.03 g/cm³ |
| Cloud point (1% aq.) | > 36°C |
| Flash point | > 95°C |
| pH (1% aq.) | 5.5 – 7.0 |
| Storage stability | 24 months (cool, dry) |
Performance data
- 2021
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- 10000m²
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- 50+
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Performance benchmark
| Property | This fungicide adjuvant | No adjuvant | Conventional NIS |
|---|---|---|---|
| Surface tension (0.1%) | 21.5 mN/m | 32–36 mN/m | 26–30 mN/m |
| Lower-canopy coverage gain | +25–40% | Baseline | +8–12% |
| Rainfastness onset | 30–45 min | Not rainfast | 60–90 min |
| Translocated fungicide movement support | Yes | No | Minimal |
| Disease control retention, pre-rain application | High | Low | Moderate |
Fungicide program field trial results
Source: cereal and row-crop fungicide field trials, 2024–2025.
Tank-mix compatibility
Fully compatible Test before full mix
Dilution calculator
Enter your fungicide spray tank volume to estimate the recommended dose (0.035% v/v typical).
How to apply
Safe use guidelines
- Personal protection — Wear gloves, goggles, and long sleeves during mixing.
- First aid — Rinse skin/eyes with plenty of water; if ingested, seek medical advice.
- Storage — Keep in original container, tightly closed, cool and dry (5–40°C).
- Environmental — Biodegradable (OECD 301); low toxicity to fish (LC₅₀ > 200 mg/L).
- Disposal — Dispose of empty containers per local regulations; do not contaminate water sources.
- Application timing — Best results when applied ahead of forecast infection-period weather.
Crops & use cases
- Cereal disease programs — wheat, barley — rust, Septoria, and other foliar disease control.
- Row crop fungicide programs — corn, soybean — dense canopy disease management.
- Orchard & vineyard fungicide programs — systemic and contact disease control in tree/vine canopies.
- Vegetable fungicide programs — leafy and fruiting vegetable disease management.
Also used in resistance-management fungicide rotation programs where consistent, complete coverage supports program integrity.
Why it outperforms
- Reaches disease-start zones — 25–40% better lower-canopy coverage than untreated sprays.
- Protects timing-critical applications — 30–45 minute rainfastness beats many infection-period rain events.
- Extends new-growth protection — translocated movement covers leaf area that emerges post-spray.
- Validated across major fungicide classes — triazoles, strobilurins, SDHIs, and multi-site products.
Application guidelines
- Application timing: apply ahead of forecast infection periods to maximize the rainfast benefit
- Dense canopies: use the higher end of the rate range for wheat, orchard, and vineyard programs
- Tank mixing order: add after the fungicide is fully dissolved in the tank
- Rain-threatened windows: prioritize spray timing to allow the 30–45 minute rainfast set period
Packaging & shelf life
- Packaging: 1 L, 5 L, 20 L, 200 L drums / IBC totes.
- Storage: cool, dry, away from direct sunlight; 5–40°C.
- Shelf life: 24 months in unopened original container.
Global quality benchmarks
| Test item | Standard requirement | Our performance |
|---|---|---|
| Surface tension (0.1%) | ≤ 24 mN/m | 21.5 mN/m |
| Lower-canopy coverage gain | ≥ 10% | 25–40% |
| Rainfastness onset | ≤ 90 min | 30–45 min |
| Foam height (1 min) | < 25 mL | < 20 mL |
| Biodegradability | OECD 301 | Readily biodegradable |
Frequently asked questions
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Protect the disease window before the weather closes it
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