How to apply foliar fertilizer to greenhouse vegetables? Teaching you the correct method

Fertilizer solution concentration: During foliar application, the fertilizer solution concentration must be appropriate to achieve good results. If the applied concentration is too high, it is not only unhelpful but harmful. Generally speaking, the suitable spraying concentrations for various micronutrient fertilizers are: boric acid or borax solution 0.05%-0.25%; ammonium molybdate solution 0.02%-0.05%; zinc sulfate solution 0.05%-0.2%; copper sulfate solution 0.01%-0.02%; ferric sulfate solution 0.2%-1%; if the fertilizer solution concentration is too low, it will also fail to achieve the ideal effect.

Foliar application timing: The timing of spraying micronutrient fertilizers must be determined according to different vegetable varieties and different micronutrient fertilizer types. Generally, spraying at flowering time is preferable.

Usage and dosage: Generally, 40-70 kg of fertilizer solution is applied per mu, so that the vegetable stems and leaves are moistened.

Foliar application frequency: Foliar spraying generally uses a relatively small amount of fertilizer, so a single application can hardly meet all growth needs. Therefore, the number of fertilizer applications should be appropriately increased to make up for the insufficient amount applied.