Distinguishing between Good and Bad Organic Fertilizer

Look at the packaging

Look at the formal logo, including company name, factory site, telephone, fertilizer registration certificate, expiration date, production date, certificate of conformity, etc. See if it is authorized production (generally authorized production does not have their own factory, no source of raw materials). In addition, foreign language packaging should not be purchased as much as possible.

Look at the color

High-quality organic fertilizers are fermented by long-term high-temperature fermentation, and the color should be dark brown to black; the inferior quality is usually lighter.

Smell

Carefully smell whether the fertilizer has ammonia smell, fecal smell or muddy smell. Generally, high-quality organic fertilizer has a special acid flavor due to complete decomposing.

Water soluble method

After dissolving the organic fertilizer in water, the inferior fertilizer is unevenly distributed with more impurities, and sinks to the bottom; the high-quality water-soluble fertilizer is evenly distributed, and the color is sauce color.

Twist-in-hand

Take the organic fertilizer and use the thumb and forefinger to crush back and forth. If there is a feeling of picking up hands, there are sand grains or other impurities inside, which may be inferior fertilizer.

Test

Take the organic fertilizer and use the thumb and forefinger to crush back and forth. If there is a feeling of picking up hands, there are sand grains or other impurities inside, which may be inferior fertilizer.

It is also possible to leave part of the application of the organic fertilizer when the field is applied, and observe the performance of the plant. Good organic fertilizer has obvious effects on growth, yield and quality.