What foliar fertilizer works well for small corn seedlings
During the growth of corn, foliar fertilizer needs to be applied appropriately. But some corn seedlings are small, so what foliar fertilizer should be used for small corn seedlings? Let us find out together.
1. What foliar fertilizer should be used for small corn seedlings?
1. Choose a good-quality foliar fertilizer: when purchasing foliar fertilizer, pay attention to whether the factory name, factory address and production date on the packaging bag are complete, and whether the packaging is intact; for liquid fertilizer, pay attention to its solubility and whether there is any sediment, etc.
2. When the base fertilizer is insufficient, you can choose a foliar fertilizer mainly based on nitrogen and phosphorus fertilizers; when the base fertilizer is applied sufficiently, choose a foliar fertilizer mainly based on trace elements, or you can choose a foliar fertilizer containing growth-regulating substances according to the different needs of the crop.
3. When spraying foliar fertilizer, the spraying concentration must be strictly controlled, especially for foliar fertilizers containing growth-regulating substances. For example, triacontanol at a concentration of 0.5-1 microgram can promote seed germination, but a concentration exceeding 1 microgram will inhibit seed germination. Therefore, spraying must be carried out strictly according to the concentration required in the instructions for each foliar fertilizer.
2. When should foliar fertilizer be used on corn?
1. When pests and diseases occur, using foliar fertilizer helps improve the disease resistance of the plants;
2. When the soil is too acidic, too alkaline or too high in salinity, which is not conducive to the plants' absorption of nutrients;
3. During the full fruiting stage;
4. After the plants suffer gas damage, heat damage or freezing damage, choosing an appropriate time to use foliar fertilizer helps alleviate the symptoms.
When applying foliar fertilizer, it is best to choose early morning or evening when the wind is not strong. If heavy rain occurs after spraying foliar fertilizer, spray once more. If spraying over a small area, you can spray the undersides of the leaves, because the undersides absorb nutrients faster than the upper surfaces.