Why do potatoes rot their leaves when it rains for a long time?

Potatoes have been raining for a long time, why do they rot leaves? Because the potatoes are ripe, his leaves do not play a great role in the potatoes, because the ripe potatoes are in the soil, and the ingredients and nutritional value are not much, so after waiting, its leaves will rot.

If it rains every day, potatoes will be easy to rot leaves or rotten potatoes, this is because of the water, too much water will naturally become moldy and rotten, not only potatoes and other vegetables are the same, beans and sweet potatoes can not be too much water.

Ripe potatoes are easily rotten when they are drenched in heavy rain, so they need to be dried with surface moisture and stored in the following ways.

Potato preservation: 1. Put an apple in the bag where the potatoes are stored, and then tie the bag tightly This is because the apple will emit something called "ethylene gas", which can slow down the "development" of potatoes. It's that simple!

2. Tie it up in a plastic bag and isolate it from the air to prevent it from drying out, rotting and sprouting.

3. Potatoes that are afraid of freezing should be placed in a cardboard box and kept away from cold places.

Ordinary families should do the following "six taboos" when storing potatoes:

1. Avoid too much water: stop watering 7 days before harvest to reduce water content and promote the aging of potato skins, so as to facilitate early dormancy and reduce diseases.

2. Avoid exposure to the sun: Some people expose their skins to the sun in order to dry them, and as a result, the fruits that like cold become rotten or the potato skin turns green, and they are inedible. The correct way is to dry in a shaded and ventilated place. Finally, the potatoes should be packed in a ventilated bag and placed in a dry place.

3. Avoid dampness: potatoes are fresh vegetables, too humidity, poor ventilation will rot. It should be placed on the sand in the corner of the house.

4. Avoid high temperature: If the temperature is too high, potatoes will sprout or rot, and if the temperature is too low, potatoes are prone to frostbite and cannot be eaten. Therefore, stacking potatoes should not be stacked in large piles so that the potatoes can breathe, and pay attention to strict selection before storage to remove diseased, rotten, injured, and bad potato pieces with hemp spots and moisture.

5. Avoid mixed living: Generally, other fresh vegetables are easy to mold, and potatoes should not be put together with these vegetables.

6. Avoid sweet potatoes (sweet potatoes): Potatoes cannot be stored with sweet potatoes. Otherwise, either the sweet potato is stiff, or the potato sprouts.

When the temperature drops after the rain, the humidity is suitable for the growth of bacteria, and the leaves of the potatoes wilt and even rot, which is a sign that the potatoes have a late blight, and the yield will be reduced if they are not harvested in time.

Plants also have to breathe, and soaking in water for a long time will definitely rot leaves and roots.

Most of the root rot of potatoes is caused by root rot, in addition, when potatoes are planted, excessive rain, water accumulation in the field, heavy stubble and other reasons will induce this disease, so potatoes should pay attention to keep the soil moist before the emergence of seedlings, try not to accumulate water in the field, watering and hoeing in time after rain.

Prevention of potato root rot disease.

If you want to prevent potato root rot disease, you need farmers to avoid heavy planting, try to rotate planting with rice, corn, wheat, beans and other crops, and at the same time, when planting, we should select disease-free tubers as seed potatoes and pay attention to cultivating strong seedlings.

Before planting, farmers can use Bicagen Congcong seed dressing to strengthen the ability of heat preservation and moisture, improve the germination rate of potato seeds, and strengthen field management to repel underground pests and avoid root rot caused by pests.

Secondly, it is necessary to increase the application of organic fertilizer and potassium fertilizer in the potato field in a timely manner, pay attention to the foliar spraying of photosynthetic nutrient film fertilizer to improve the plant's own disease resistance, and use Bika microbial agent root boy to irrigate the roots or water with water to enhance the self-disease resistance of potatoes.

Points to note when fertilizing potatoes.

When fertilizing potatoes, it is not advisable to apply too much chlorine-containing fertilizer, mainly because when the concentration reaches a certain level, it will poison the root system of potatoes, reduce the content of potato starch and sugar, and affect the yield and quality of potatoes.

For potato fertilization, pay attention to the use of base fertilizer, you can choose fully decomposed farmhouse fertilizer, must be composted at high temperature to kill grass seeds and pathogenic bacteria, conditional compost aging for 1-2 months, the application of fertilizer should be 3-5 cm away from seed potatoes.

If there is a long period of rainy weather, there is a chance that the potatoes planted in the field will rot. In rainy weather, the day is warm and the night is cool, and the environment is humid, which is conducive to the growth of bacteria, in this environment, the potato base is prone to a disease called late blight, the diseased potato leaves are easy to die, the plant rots, and the fruit itself may be black and rotten.

If potato growers encounter long-term rainy weather, it is recommended to harvest the fruit in time when the fruit is ripe, and try to avoid potato disease and reduce yield.

When potatoes begin to show symptoms due to plant infection due to rainy weather, it is recommended to prevent or eliminate the diseased plants by using drugs to avoid economic losses caused by large-scale infection of the diseased plants.

There are three causes of root rot in plants, which are as follows.

1. Insufficient light. Natural causes or wrong place selection. The higher the altitude, the stronger the light.

2. Too much water. Water fills the gap in the soil, and the air in the soil is replaced by water, and the external air cannot enter at this time, so the soil is hypoxic, the respiration of the roots is hindered, the physiological function is reduced, and the ability of the root system to absorb water and fertilizer is blocked. Which one.

3. Insufficient air. The roots are not easy to ventilate, which leads to the weakening of seedling growth, the phenomenon of root rot, the manifestation symptom is that the roots are rust-colored rot, the seedlings grow slowly after the emergence of new roots, and some even stop growing, the leaf color is gray-green, and gradually turn yellow, and the bridge slows down and causes the whole plant to wilt and die.