Analysis of the Causes of Redness of Strawberry Stem

1, variety characteristics

The first is related to the characteristics of the breed. A friend from Jiangsu told Xiaobian that he has been breeding for many years. Every year, he finds a lot of red and red rods, but when he looks at his strawberry seedlings, he grows very well. health.

So the first one is to look at your breed. If you are planting a red face, it seems that the plant has no abnormalities except for the red rod. It is normal, don't worry.

2. Adversity

High temperatures, diseases, poor soil conditions, pests and diseases, etc. are called bad environments, also called adversity.

In order to resist these adverse environments, strawberries will protect themselves through the discoloration of anthocyanins. It is like a cold person who wants to wear a cotton jacket. It is a hot day to wear short sleeves. It is a change made by strawberries in order to adapt to the environment.

(1) High temperature in summer and low temperature in winter

Strawberries may now be due to red stalks in summer. The suitable temperature for photosynthesis of leaves is 20-25 °C, 30 °C or more, and photosynthesis declines.

During the growing season, if the temperature is higher than 38 °C, the growth of the strawberry is inhibited, no new leaves are formed, and the old leaves are burned or burnt. In order to resist high temperatures, the leaves may produce anthocyanin redness.

(2) Bad soil conditions

Rain or flooding causes long-term accumulation of water in the nursery field. Soil compaction and non-breathing affect the roots, and the dry seedlings lack water, and the nutrients will also be red. These are all manifestations of poor soil conditions. The poor soil conditions cause the roots to be blocked, and the absorption of nutrients will cause redness of the stems.

(3) Salt and EC are too high to cause salt damage

Alkaline too alkaline is also a manifestation of adversity. The solution concentration of the soil refers to the concentration of salt ions in the soil. When the concentration of the soil solution is higher than the concentration of the cell liquid in the strawberry plant, that is, the soil EC value and the pH are too high, the result is that the strawberry will A nutrient absorption disorder occurs, and stalk redness may also occur.

(4) Be alert in the early stages of the disease

In the early stage of disease caused by over-wet disease, the disease was not obvious, and the petioles of old and young leaves also had redness.

3. Normal aging of strawberries

Normally senescent leaves usually occur at the base, and leaf petiole may appear red. Don't worry about this.

How to do stalk redness?

If there are no lesions, and there is no long-term difference in the plants, the red rod is normal. Just as a person is injured and wants to recover, strawberry is also a manifestation of recovery after being injured. Here is an example. After the strawberry seedlings are slow, the stalks are red. This is the strawberry's efforts to adapt to the environment, and it is also a sign that the seedlings are transplanted and planted. After planting, it is usually necessary to water more water to promote the success of slow seedlings.

Be alert to disease spots and plant growth

However, if the red rod is accompanied by small plants, the growth is very slow, and the new leaves are not green, this requires vigilance. This may be a disease, and it is also a manifestation of the growth of a plant. In short, the growth of strawberries is not normal.

Seaweed fertilizer and humic acid increase root activity

If the plant is short, it is possible to apply seaweed fertilizer/humic acid fertilizer to promote root growth, improve plant stress resistance, and help the strawberry resist the adverse environment.

Focus on preventing anthrax

If there are lesions on the leaves, it is necessary to judge the specific disease according to the leaf spots. The best way to kill the seedlings is to take the medicine once every 7 to 10 days and prevent it in time. For anthracnose, when the rain is low during the nursery period, the medicine is taken at intervals of about 10 days, and the rain is more than 7 days. Recommended agent: 250 g / liter of prochloraz emulsifiable oil 800 times + 60% oxazolone hydrazine dispersible granules 800 times.

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