To use powdered gypsum as a soil amendment, you typically apply it to the soil surface, dig it in, and water it thoroughly. This method is commonly used to improve soil structure, particularly in clay soils.
Applying Powdered Gypsum to Soil
Using powdered gypsum is a straightforward process for improving certain soil types. The recommended method involves applying it directly to the ground you wish to treat.
Here's how to apply powdered gypsum based on common gardening practices:
- Determine the Application Rate: Add powdered gypsum at the rate of two to three handfuls per square metre. This provides a general guideline for coverage.
- Spread Evenly: Distribute the measured gypsum powder over the surface of the soil in the area you want to treat.
- Dig In: Once spread, dig the soil over. This incorporates the gypsum into the top layer of the soil, where it can begin to work on the soil structure.
- Water In: After digging, water the soil in. Watering helps the gypsum start to dissolve and move into the soil profile.
Timing and Effects
It's important to note that the effects of powdered gypsum are not immediate. It will take several months to get the full effect as the gypsum slowly dissolves and interacts with the soil particles.
For situations requiring a quicker result, such as improving soil specifically within planting holes for immediate use, a different approach might be needed. For example, using a liquid clay breaker often combined with organic matter can provide a faster improvement.
Using powdered gypsum as described above is a long-term strategy for enhancing soil structure, especially beneficial for compact or clay-heavy soils.
