Ammonium thiosulfate
Ammonium Thiosulfate: The Essential Agricultural Solution
Ammonium thiosulfate (ATS) is a liquid fertilizer widely used in modern agriculture. As a highly effective sulfur and nitrogen source, it plays a crucial role in crop nutrition programs. This clear liquid solution offers excellent compatibility with other agricultural inputs and demonstrates superior performance in various soil conditions.
Product Specifications
- Chemical Formula: (NH₄)₂S₂O₃
- Appearance: Clear, colorless to slight yellow liquid
- Nitrogen Content: 12%
- Sulfur Content: 26%
- Density: 1.34 g/cm³ at 20°C
- pH: 6.5-7.5
- Solubility: Completely water soluble
- Freezing Point: -18°C (0°F)
Technical Parameters
| Parameter | Value |
|---|---|
| Molecular Weight | 148.20 g/mol |
| Specific Gravity | 1.34 |
| Viscosity | 1.6 cP at 20°C |
| Application Rate | 2-10 gallons per acre |
| Storage Temperature | 10-30°C (50-86°F) |
Key Advantages
Ammonium thiosulfate provides several benefits that make it superior to other sulfur fertilizers:
- Immediately available sulfur source
- Reduced soil pH in alkaline conditions
- Excellent compatibility with pesticides and other fertilizers
- Low salt index compared to ammonium sulfate
- Convenient liquid formulation for easy application
FAQ Section
Q: What crops benefit most from ammonium thiosulfate application?
A: Ammonium thiosulfate is particularly beneficial for sulfur-loving crops such as corn, wheat, canola, alfalfa, and vegetables. It's also effective for fruit trees and vineyards where sulfur requirements are high. The liquid formulation makes it especially suitable for fertigation systems in high-value crops.
Q: How does ammonium thiosulfate compare to other sulfur fertilizers?
A: Ammonium thiosulfate offers several advantages over alternatives like elemental sulfur or ammonium sulfate. It provides immediately available sulfur (as opposed to elemental sulfur which requires microbial oxidation), has a lower salt index than ammonium sulfate, and is more compatible with other agricultural chemicals. The liquid form allows for precise application and better distribution in the soil profile.
Q: Can ammonium thiosulfate be used in foliar applications?
A: While primarily used as a soil application, ammonium thiosulfate can be used in foliar applications at reduced rates (typically 1-2 quarts per acre). However, proper dilution is crucial to prevent leaf burn, and applications should be made during cooler parts of the day. Always conduct a small-scale test before widespread foliar application.
Application Guidelines
| Crop Type | Application Rate | Application Timing |
|---|---|---|
| Corn | 3-5 gal/acre | Pre-plant or sidedress |
| Wheat | 2-4 gal/acre | Fall or early spring |
| Soybeans | 2-3 gal/acre | Pre-plant |
| Vegetables | 1-3 gal/acre | At planting or through fertigation |
Safety and Handling
While ammonium thiosulfate is generally safe when handled properly, users should observe standard safety precautions:
- Wear protective gloves and eyewear during handling
- Avoid contact with skin and eyes
- Store in original containers away from extreme temperatures
- Keep away from strong acids and oxidizers
- Rinse equipment thoroughly after use
Ammonium thiosulfate continues to gain popularity among growers due to its versatility, effectiveness, and compatibility with modern precision agriculture practices. When used according to recommended guidelines, it can significantly improve crop yields and quality while optimizing nutrient use efficiency.