What fertilizer is good for tomato topdressing?

Tomato topdressing time

In order for tomato seedlings to survive after transplanting, they need to be fertilized. You can apply water-soluble fertilizers of nitrogen, phosphorus and potassium plus humic acid active liquid fertilizer to the roots, and spray natural brassinolide, humic acid active liquid fertilizer and potassium dihydrogen phosphate on the leaves. During the flowering and fruiting period, potassium nitrate and potassium dihydrogen phosphate can be applied to the roots, and potassium dihydrogen phosphate, natural brassinolide and humic acid active liquid fertilizer can be sprayed on the leaves.

What fertilizer to use for tomato topdressing

It needs to be decided based on the growth conditions of tomatoes and soil fertility. Generally, organic fertilizers are applied, and nitrogen and phosphorus fertilizers are applied during the growth period. There is a great demand for potassium fertilizers during the fruiting period, so some compound fertilizers with high potassium content should be applied. This will replenish the required nutrients in time and increase the fruit yield.

Generally, urea is used as topdressing fertilizer for tomatoes. It is better to use urea because we all know that tomatoes can grow quickly and have a short growth cycle. Urea can take effect quickly and meet the nutrient needs of the plants, so it is better.

Topdressing method for tomatoes

Fertilization of tomatoes needs to be controlled from the time they are planted to the time they set fruit to avoid excessive growth. If there is a serious lack of fertilizer during this period, you can spray a little diluted manure water or biochemical organic fertilizer liquid. Topdressing should be done frequently during the young fruit stage and harvest period of tomatoes to promote growth and development. In addition to root fertilization, foliar fertilizer should also be applied, and organic liquid fertilizer can be sprayed.

Precautions for topdressing tomatoes

Tomato foliar topdressing needs to be done in the morning and afternoon when the weather is good. It will not affect the plant's absorption. Never do it at noon. Open-field tomatoes should not be fertilized on windy or rainy days. Foliar topdressing can be done with potassium dihydrogen phosphate or compound micro-fertilizer. At present, there are many types of foliar fertilizers, which should be used correctly according to the instructions and can be used alternately.