Is foliar fertilizer harmful to the human body? When will the spray be ready?

Foliar fertilizer is often used to make up for the lack of nutrients absorbed by roots, and it can also be sprayed when topdressing and replenishing nutrients. For the purpose of foliar absorption, the nutrients needed by crops are directly applied to foliar fertilizers. So is foliar fertilizer harmful to the human body? When will the spray be ready?

Is foliar fertilizer harmful to the human body

A small amount of foliar fertilizer has no effect on the human body. The application method of foliar fertilizer is to spray liquid fertilizer or water-soluble fertilizer into the leaves of plants to absorb nutrients and make up for the lack of nutrients absorbed by roots, which has the advantages of quick effect and simple operation. Foliar fertilizer is often used to replenish plants, whether it is home gardening or large-scale planting.

If only spraying foliar fertilizer to indoor three or five potted flowers, the harm to the human body can be negligible, and there is no need to worry. If foliar fertilizer is sprayed in a large area, there must be odor evaporation, which will adversely affect the human body. Especially in the case of concentrated spraying of flowers in the greenhouse, because the air in the greenhouse is not ventilated, it will have adverse effects on the human body, but as long as we pay attention to not staying for a long time and maintaining a good ventilation environment. It will not cause harm to the human body.

When will the foliar fertilizer be sprayed?

The spraying of foliar fertilizer needs to be determined according to the growth of plants, the spraying time of different plants is different, and the spraying time of foliar fertilizer with different fertilizer effect is also different. generally speaking, the spraying of foliar fertilizer is the same as traditional fertilization. it is necessary to consider the plant's own situation, such as dormancy, bud, flowering, fruit and other different stages, different fertilization strategies.

General foliar fertilizer spraying, as long as the leaf surface is moist, leaf tip dew can, in general, the absorption of young leaves is better than the old leaves, the back of the leaf is better than the front of the leaf.

Third, the benefits of foliar fertilizer

1. Fast absorption: after soil fertilization, nutrients are transported far away and slowly, while with foliar fertilization, all kinds of nutrients can be quickly absorbed by crop leaves, directly into plants from leaves, and participate in crop metabolism. the speed of fertilizer absorption by leaves is about twice as fast as that from roots.

two。 The effect is good: the method of foliar fertilization can greatly increase the nutrient elements in the plant in a short time, quickly alleviate the fertilizer shortage of crops, and give full play to the maximum benefit of fertilizer.

3. Dosage saving: foliar fertilization is generally concentrated on crop leaves, the dosage is less, usually with a fraction or a tenth of the amount of soil fertilization can achieve satisfactory results.

The above is a brief introduction of foliar fertilizer by soil flow net. a small amount of foliar fertilizer will not harm the human body. compared with soil fertilization, foliar fertilizer has the characteristics of fast absorption, good effect, low dosage and so on. however, there is no specific standard for the application of foliar fertilizer, so different fertilization strategies should be implemented according to the actual situation.