The test method for powdered organic fertilizer is to directly put the powdered organic fertilizer in a glass of water. If it floats, then it is a qualified organic fertilizer. If it sinks directly, then it is a qualified organic fertilizer. There may be a problem because organic matter is lighter than water. To test granular organic fertilizer, just put it in water and check the solubility. Generally speaking, the more precipitation, the worse. The higher the solubility, the better.

You can use the following method

Touch: Slippery, dry and loose, if you pick up the ball and it will fall apart when you touch it, it is high-quality fertilizer.

Second smell: If it has a slight fragrance and smell of lees, it means it is relatively well-rotted.

Third look: The off-white ones are over-cooked and are generally not recommended. Semi-rotted organic fertilizer is often used in large fields. This kind of fertilizer continues to decompose in the ground and can combine with organic matter in the soil to form new humus, which is more effective.

It should be noted that the action period of organic fertilizer is relatively long, and fertilizing the soil also requires a process.