Reasons for potato blackening and preventive measures

Potato is an important staple food in the world, its planting area is also gradually increasing, its utilization rate is very high, not only can make many kinds of food, but also resistant to storage, strong adaptability, suitable for planting in many areas. But potatoes will have black heart problems during growth or storage. What is the cause of this? Let's get to know it.

First, the reason for the black heart of potatoes

There are two main types of black heart in potato, one is pathological black heart, and the other is physiological black heart, which has a very serious impact on the quality, resulting in tuber fester and loss of commodity value.

1. Pathological black heart

This kind of black heart is caused by black shank disease, which is caused by obvious short symptoms of potatoes, stiffness and yellowing of leaves, and the leaflets on the plant curl upward obviously. in the later stage of the disease, the stem will blacken and rot, and the plant will wither. the diseased potato will first rot and blacken from the stolon, and it will develop inward, resulting in a black heart. In a high humidity environment, it is more likely to suffer, decay soon after the onset of the disease, and there will be a very smelly smell, pathological black heart, which is likely to occur both in the growing period and during the storage period.

2. Physiological black heart

The black heart that causes this phenomenon mainly occurs during storage or during transportation, mainly due to lack of oxygen and lack of oxygen, resulting in a black heart. The main symptoms occur inside the potato pieces, the outer skin is difficult to find, only after the incision will occur in the middle has formed a black heart. The skin goose will show hard hair, loss of water, gloss and lubrication will be significantly reduced, the appearance is not perishable, there is no special smell, serious will spread to the outer bud point.

II. Preventive measures

1. Pathological black heart

For the black heart caused by black shank disease, the seed blocks should be strictly selected from the source, and the diseased potatoes should be strictly screened to reduce the occurrence of black shank disease as far as possible. if you accidentally cut the diseased potato pieces, in addition to destroying the diseased potato pieces, the knife should be disinfected in time to avoid cross-infection. Selecting some varieties with strong disease resistance can also reduce the occurrence of diseases. After diseased plants are found during planting, they should be pulled out and destroyed in time. In addition, black shank is easy to breed in rainy season, so it is necessary to do a good job in drainage in rainy season.

2. Physiological black heart

Because of the black heart caused by physiology, the storage environment should be adjusted in time to avoid accumulation too high and too thick, and choose cool, well-ventilated and low-temperature environment for storage. Because only when the air is unobstructed and suitable temperature, can we avoid physiological black heart, especially in bagging, try not to use airtight plastic bags, once the hypoxia time is too long, it is very easy to cause potato black heart.

The above is the introduction of potato black heart reasons and preventive measures, hope to help you, want to know more related knowledge, please follow us.