Solution
UAV Foliar Nutrition Solution – Rice
2026-04-16
01 Product Introduction
Drone-Grade Monopotassium Phosphate (MKP) is a refined foliar fertilizer specially designed for low-volume application by unmanned aerial vehicles (UAV). Its high purity and excellent solubility ensure spray stability and crop safety. When applied to rice during the growing season, Drone-grade MKP enables rapid nutrient absorption through foliage, promotes tillering and root development, enhances photosynthetic efficiency and stress resistance. It is fully compatible with low-volume UAV spraying systems, ensuring uniform application, fine droplets, and maximum nutrient use efficiency.
02 Technical Basis for Recommended Concentration
In accordance with the official guidelines issued by the National Agro-Technical Extension and Service Center of China, the recommended application specifications for foliar spraying of MKP on rice are as follows:
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✓Recommended concentration for conventional manual/mechanical spraying: 0.2%–0.3% (2–3 g/L)
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✓Safe upper limit for agricultural UAV spraying: ≤3% (30 g/L), recommended concentration for routine operation: 0.2%–0.3%
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✓Recommended water volume for UAV spraying: 1.5–3 L/mu (approx. 22.5–45 L/ha)
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⚠Core safety principle: The solution concentration must not exceed 3% under any circumstances; follow the principle of "better too dilute than too concentrated".
Under these parameters, commend the application rate per mu: 100–150 grams
These parameters reflect the precise supplementary mode of UAV low-volume application, enabling accurate nutrient delivery without increasing spraying load.
Continuously published field trial data and crop application cases can serve as references and verification for practical operations.
03 Product Features
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✦Rapid dissolution in cold water to ensure stable spray during UAV operations
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✦Maintains clear and transparent spray solution, reducing sediment formation
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✦Minimizes the risk of nozzle clogging to the greatest extent
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✦Enables precise nutrient delivery at 0.2–0.3% concentration without increasing spraying load
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✦0% Nitrogen (N), 52% Phosphate (P₂O₅), and 34% Potash (K₂O)
04 Performance in UAV Spraying Scenarios
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⚙Low-volume application with controllable flight speed and fine, uniform droplets
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⚙Uniform coverage of foliage to reduce waste
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⚙Stable dissolution ensures uninterrupted continuous operation
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⚙Compatible with conventional UAV spraying systems, reducing operational risks and improving efficiency
05 Suitable Growth Stages
| Growth Stage | Application Objectives |
|---|---|
| Seedling Stage | Promote root development and improve lodging resistance of seedlings |
| Tillering Stage | Boost tillering and enhance nutrient accumulation in plants |
| Jointing Stage | Improve disease resistance and nutrient absorption efficiency |
| Booting Stage | Promote panicle development and increase the number of effective grains |
| Filling Stage | Enhance grain plumpness, increase yield and improve quality |
It should be noted that Drone-grade MKP is suitable for aerial application by UAV. During operation, maintain controllable flight speed and uniform foliage coverage to ensure precision and absorption efficiency of low-volume application. Check foliage for cleanliness, free of obvious diseases or dust before spraying to avoid affecting absorption. When mixed with pesticides or other fertilizers, a small-scale compatibility test is recommended to ensure spray stability and crop safety. Avoid application under high temperature, strong light, rainy, or windy conditions to guarantee spray performance and operational safety.
06 Mixing Compatibility
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⊕Drone-grade MKP is compatible with most conventional foliar fertilizers and some water-soluble trace element fertilizers
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⊕A small-scale mixing test is recommended before mixing with pesticides to prevent sedimentation or nozzle clogging
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⊕Not recommended for mixing with high-pH or phosphate-containing pesticides to avoid chemical reactions that reduce absorption efficiency
07 Heavy Metal Control and Crop Safety
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🛡MKP is a high-purity product with heavy metal content strictly controlled within safety standards
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🛡Safe for rice leaves and grains when used at recommended concentrations and rates, with no residue risk
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🛡Combined with UAV precision spraying systems to achieve accurate nutrient delivery and reduce environmental burden
08 Ongoing Field Validation
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📊Continuously collect and publish field performance data of Drone-grade MKP on different crops and growing areas
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📊Ensure accurate, safe, and reliable crop nutrient supplementation through transparent technical validation under various field conditions
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📊Provide references and verification for agricultural technical promotion and farmer operations
09 Conclusion