Causes and Control methods of Tomato discoloration

Tomato is one of the common vegetables in our life, it is cyan when it is not ripe, it is red when it is ripe, and cyan will gradually change to red when it is mature. But because some elements will lead to poor coloring of tomatoes, there is a phenomenon of cyan and yellow, so what is the cause of this? How to prevent and cure it? Let's take a look at the detailed introduction.

1. The temperature is too low

Tomato body contains chlorophyll and carotenoid, its color conversion is controlled by these two pigments, when the low temperature is lower than 16 degrees, carrots will be inhibited, and when the temperature is less than 24 degrees, lycopene formation will be inhibited, which will lead to poor coloring. It is generally more serious in the greenhouse, and it may also be caused by a large temperature difference between day and night.

Prevention and control methods: when entering the low temperature period, the tomato can not meet the requirements of lycopene formation, so the coloring is poor, so the red agent can be sprayed before picking to promote its early listing. However, it should be noted that the medicament should not be used too early, so as to avoid the phenomenon of stiff fruit; the medicament should not be too strong, so as not to cause the leaves to yellowing and show the symptoms of drug damage; the red fruit should not be too much per plant, so as to avoid drug damage to the plant; the liquid should not be sprayed on the leaves, it will cause the leaves to yellowing and wither.

2. Improper fertilization

During the coloring period of tomato, if too much nitrogen fertilizer is applied, the chlorophyll of tomato will increase, which will delay the decomposition of chlorophyll and affect the formation of lycopene and carrot. In addition, yellow fruit will be formed in nitrogen deficiency and potassium deficiency, and green fruit will appear in boron deficiency.

Control methods: for tomato growth in the later stage to control the amount of nitrogen fertilizer, if planting nitrogen deficiency can use set fertilizer, but should not apply nitrogen fertilizer alone. When the plant lacks some elements, it can supplement the needs of the plant by spraying fertilizer on the leaf.

3. Planting is too dense

The coloring of tomato has a great relationship with light. If the planting density is too high, the leaves of the plants will cover each other, so that the fruit does not have enough light, resulting in poor coloring and the phenomenon of green shoulder fruit.

Control methods: to control the planting density, promote good field permeability, prune branches and leaves in the later stage, maintain permeability, make the fruit have sufficient light conditions and promote coloring.

4. Other reasons

When the fruit water is insufficient, resulting in insufficient nutrient supply or weakening of root absorption capacity, or soil consolidation and salinization, it will lead to poor coloring of tomato.

Control methods: in the fruit expansion period of drought should be timely watering, but should not be watered too much at one time, just keep the soil moist. Results when the number is too much, fruit thinning measures can be taken, when the root absorption is weakened, foliar fertilizer spraying can be adopted to maintain nutrients, and more organic fertilizer can be applied to improve soil structure so as to avoid salinization.

The above is the introduction of the causes and control methods of tomato color conversion. I hope it can help you. If you want to know more about it, please follow us.