What are the precautions for topdressing with organic fertilizer?
How do you use organic fertilizer to topdress crops? What issues should be noted when topdressing with organic fertilizer? Below, Zhongdi Web gives a brief introduction for netizens' reference. 1. Topdress in advance: Organic fertilizer contains quick-acting nutrients, but the amount is limited, and the release of a large amount of slow-release nutrients requires a certain process, so when organic fertilizer is used as a topdressing, it should be applied a few days in advance...
How do you use organic fertilizer to topdress crops? What issues should be noted when topdressing with organic fertilizer? Below, Zhongdi Web gives a brief introduction for netizens' reference.1. Topdress in advance: Organic fertilizer contains quick-acting nutrients, but the amount is limited, and the release of a large amount of slow-release nutrients requires a certain process, so when organic fertilizer is used as a topdressing, it should be applied a few days in advance.
2. Topdress with high-quality organic fertilizer: During the rapid growth period, crops need large amounts of nutrients such as nitrogen and potassium. Generally, the nitrogen and potassium content in organic fertilizer is not high. To ensure the crop's nutrient demand during rapid growth, choose a high-quality organic fertilizer with relatively high nitrogen and potassium content.
3. Set a reasonable ratio for the distribution of base fertilizer and topdressing: For example, when the soil temperature is low, microbial activity is weak and organic fertilizer nutrients are released slowly, so most of the application amount can be used as base fertilizer; when the soil temperature is high, microbial decomposition ability is strong. If too much base fertilizer is applied, before planting, the fertilizer is excessively decomposed by microorganisms, and after planting, it immediately exerts its fertilizing effect, which may sometimes cause crops to grow excessively. Therefore, when cultivating crops under high-temperature conditions, it is best to reduce the amount of base fertilizer applied and increase the amount of topdressing.
4. Seedling raising should be moderate: Crop seedlings need only a small amount of nutrients, but insufficient nutrients cannot produce strong seedlings, which is unfavorable both for transplanting and for subsequent crop growth. Fully decomposed organic fertilizer releases nutrients evenly and has comprehensive nutrients, making it an ideal fertilizer for raising seedlings. Generally, fully fermented organic fertilizer is mixed with a certain amount of peat, vermiculite, or perlite, and mixed evenly with soil to use as a seedling-raising substrate. The amount of organic fertilizer used must not exceed 10% of the total weight of the nutrient soil.
The above are Zhongdi Web's precautions for topdressing with organic fertilizer. If you have better additions, please leave a comment below to tell us.