What causes the tomato to be poorly colored?

[ Agricultural Products Network] What causes the tomato to be poorly colored? There are many reasons for the poor coloration of cherry tomatoes. In general, the temperature is too high, the light is too strong, the application of nitrogen fertilizer is too much, and the application of potassium fertilizer is insufficient.

First, the temperature inside the shed is too high. Cherry tomato fruit coloring process is the process of decomposition of chlorophyll and lycopene, carotenoids formed. When the temperature in the shed is too high or too low, the formation of lycopene is inhibited. In general, when the temperature in the shed is higher than 30 ° C, it will affect the formation of lycopene. The author found that in many Shed, because even more cloudy early, many farmers have removed the shade net, causing the greenhouse temperature is above 40 ℃, the high temperature for a long time will inevitably lead to bad cherry tomato coloring. The author recommends that the vegetable farmers re-cover the sunshade net that has been removed to ensure that the temperature in the shed is suitable for the normal growth of cherry tomatoes.

Second, the light is too strong. The author found in the arch shed that as long as the fruit is covered by the leaves or the shady part, the cherry tomato is generally well colored, and the color of the fruit completely exposed to the sun or the sunny side is yellow. This phenomenon explains that too strong light also inhibits the formation of lycopene, resulting in poor fruit coloration. In this regard, the author suggests that vegetable farmers should pay attention to the use of shade nets on sunny days and try to increase the air outlet. In addition, the leaves should not be over-exposed, and the leaves can be used to block the fruits, so as to avoid poor coloration caused by excessive light.

The third is excessive use of nitrogen fertilizer and insufficient use of potash. The author understands that because of the high temperature, vegetable farmers often pay attention to the application of nitrogen fertilizer when fertilizing, and correspondingly ignore the application of potassium fertilizer, which will also cause poor coloration of cherry tomatoes. Too much nitrogen, cherry tomatoes are prone to green shoulders; when potassium is insufficient, yellow-green shoulders are prone to occur. Therefore, in the fruit expansion period, attention should be paid to the application of potassium fertilizer, and the amount of nitrogen fertilizer should be reduced.

What causes the tomato to be poorly colored? The above content is for your reference!