When is the best time to use humic acid fertilizer? Application periods and precautions

Chemical fertilizers are indispensable in the process of growing crops. Nowadays, more and more farmers are using humic acid fertilizer in production, but many farmers feel it has no effect after using it. In fact, they have used it at the wrong time. So when is the best time to use humic acid fertilizer? What should be noted? Let's take a look together.

I. Key periods for humic acid fertilizer

1. Soil acid-base imbalance

In recent years, due to the abuse of chemical fertilizers, much soil has been polluted, and soil acidification is becoming more and more serious. Once the soil becomes acidic, the crop roots will be poisoned, affecting the roots' absorption of nutrients. At this time, we can use humic acid fertilizer to timely supplement calcium, magnesium, iron, zinc and other elements for the roots, so as to achieve the purpose of regulating the soil acid-base balance.

2. Soil drought and waterlogging

In addition to nutrients, water is also extremely important for crop growth and development. In summer with high temperature and rainy weather, the soil is very prone to drought or waterlogging. At this time, the crop roots are relatively fragile and their growth will be seriously affected. If humic acid fertilizer is used at this time, it can effectively reduce water loss in the crops and improve their drought resistance.

II. Precautions for use

1. Pay attention to the concentration used

Humic acid fertilizer works somewhat similarly to auxin. During use, special attention should be paid to the concentration of the fertilizer. If the concentration is too high or too low, the effect on crops will not be obvious, and in severe cases it may even affect the growth and development of crops.

2. Pay attention to the temperature of use

When using humic acid fertilizer, be sure to pay attention to the temperature of use. Generally, at a suitable temperature it takes 18 hours to take effect. If humic acid fertilizer is used at low temperatures, the effect produced is very slow, which easily causes waste of fertilizer and increases planting costs; while use at high temperatures may cause fertilizer damage and seriously affect crop yield.

3. Pay attention to combined use

Humic acid fertilizer works better as a base fertilizer and seed fertilizer than as a topdressing, better when applied in a concentrated way than when broadcast, and better when applied deep than when applied shallow. However, note that it cannot completely replace inorganic fertilizers and farmyard manure, and must be used together with chemical fertilizers and organic fertilizers.

4. Pay attention to the application effect

The effect of humic acid fertilizer after application also varies with different crops. The effect is relatively good when used on Chinese cabbage and radish, but the effect is somewhat poorer when used on tuber crops, and even poorer when used on cereal crops.

  The above is an introduction to the application periods and precautions for humic acid fertilizer. We hope it can help you. To learn more related knowledge, please follow us.