204 Water-Soluble Silicone Oil (Polyether-Modified Silicone Oil) is primarily used as a spray adjuvant in pesticides and fertilizers: it reduces surface tension, enhances spreading and penetration, resists rainwater erosion, significantly improves pesticide and fertilizer efficacy, and reduces dosage.
500 cst Water-Soluble Silicone Oil
One. Core Performance (Agricultural Compatibility)
Ultra-low surface tension: Reduced to approximately 21 mN/m, far exceeding conventional adjuvants, allowing rapid spreading of the pesticide solution on waxy leaf surfaces with a significantly reduced contact angle.
Excellent water solubility: Non-ionic and miscible with water in any proportion; direct tank mixing without emulsification; suitable for various water-based pesticides and foliar fertilizers.
Strong penetration + erosion resistance: Facilitates rapid absorption of the pesticide solution through stomata; forms a hydrophobic film after drying, resisting rain erosion and extending the effective period.
Low foaming + stability: Low foaming, suitable for aerial spraying and large-volume spraying; stable at pH 5–8 and compatible with most pesticides and fertilizers.
Safe and inert: Non-toxic, non-irritating, unlikely to cause phytotoxicity, and environmentally friendly.
Two. Applications in the Pesticide Field
Insecticides/Acaricides (e.g., aphids, spider mites)
Function: Strong wetting and penetration of leaves, preventing pesticide runoff and ensuring more complete insect coverage.
Effect: Insect kill rate increased from approximately 60% to 95%; pesticide dosage reduced by 30%+.
Usage: Add 0.05%–0.1% (50–100 mL/100 kg water) to the tank mix.
Herbicides (e.g., glyphosate, glufosinate)
Function: Overcomes the difficulty of wetting the waxy layer of weeds; rapid absorption of the pesticide solution enhances efficacy.
Effect: Efficacy increased by 20%–40%; water consumption reduced by 50%+.
Usage: Add 0.1%–0.2%, especially effective for aerial application.
Fungicides (e.g., for downy mildew and powdery mildew)
Mechanism: Evenly covers the leaf surface, penetrates through stomata, forms a protective film, prevents rainwater washout, and prolongs the duration of effectiveness.
Effect: Reduces disease incidence by 30%–50%, reducing the frequency of application.
Caution: Use with caution with sensitive agents such as flusilazole, flutriafol, and propargite, as they can easily cause phytotoxicity.
Three. Application in the Field of Chemical Fertilizers (Foliar Fertilizers)
Promotes absorption: Trace elements (calcium, magnesium, boron, zinc) rapidly penetrate the cuticle, increasing the absorption rate from 30% to 80%+.
Enhanced efficiency + stress resistance: Silicon strengthens cell walls, improving resistance to lodging, pests, diseases, and drought; it also improves fruit quality (e.g., increasing sweetness and reducing bitter pit in apples).
Reduced loss: Fertilizer solutions resist rain washout, increasing utilization and reducing non-point source pollution.
Usage: Add 0.05%–0.1% to the foliar fertilizer and spray during the flowering and young fruit stages.
Four. Application Methods and Precautions
Recommended Dosage
Regular spraying: 0.05%–0.1% (50–100 mL/100 kg water).
Aerial application: 0.1%–0.2% (to improve spreading and resistance to evaporation).
Compatibility and pH
Compatible with non-ionic/anionic fertilizers and pesticides; avoid strongly alkaline conditions (pH > 8) and strong oxidizing agents.
Optimal pH: 6.5–7.5; prepare and use immediately (within 24 hours).
Contraindications
Sensitive crops: Reduce dosage to 0.05% or conduct a small-scale test spray during the seedling and flowering stages.
Sensitive agents: It is not recommended to add fluazinam, phenylbutene, organosulfur compounds, etc.
Five. Summary of Application Advantages
Savings in pesticides and water: Reduces pesticide use by 30% and water use by 50%, lowering costs.
Improved quality and yield: Increases pesticide and fertilizer efficacy by 20%–50%, improving crop growth and fruit quality.
Environmentally friendly: Reduces pesticide runoff and pollution, aligning with green agriculture.
