Although the proportion of potato shaped potato is small, it occurs every year, and it also reduces the income of growers. It mainly includes hollow potato, tumor potato, and green potato. Let us discuss the causes and prevention methods of potato shaped.
First, hollow potato
(1) Symptoms, the potato is large, but the middle part of the potato is slowly hollow during the harvest or storage period, forming a cavity.
(2) Causes: During the process of continuous expansion of potato chips, the nutrients in the middle part are converted and utilized again, the dry matter is reduced, voids are formed, the starch content around the cavity is decreased, and the quality of the cooked food is hardened and the taste is poor.
(3) Control measures: 1. Appropriately increase planting density, medium fertility field, plant about 4,500 plants per mu, control the infinite increase of potato space; 2. Appropriate amount of potassium fertilizer, 10-15 kg of potassium fertilizer per mu. Potassium is important for the growth and development of potato. It can increase the content of starch and Vitamins in tubers, promote the accumulation of photosynthetic products in tubers, enhance the disease resistance, cold resistance and storage capacity of plants, and greatly increase the proportion of high quality potatoes.
Second, the tumor-like potato, commonly known as the potato "secondary growth"
(1) Symptoms: The potato tubers are chain-like, tumor-like, and dumbbell-shaped.
(2) Causes: Mainly during the growth process of the potato, it encounters high temperature and drought, and its development is inhibited. When the ecological environment turns better, it will resume growth, and the small potato block will continue again.
(3) Control measures: 1. Choose early-maturing or mid-maturing varieties that are not prone to “secondary growthâ€; 2. Do your best to ensure uniform potato water and fertilizer, especially during the expansion of potato tubers to ensure healthy and comfortable potato. Growing.
Third, green potato
(1) Causes: The main reason is that the soil is too shallow when planting, or the varieties that grow up are grown in a large amount of potato, and the soil is not ploughed in time. The sunlight is directly on the potato pieces and accumulated for a long time. The potato pieces gradually become green.
(2) Control measures: 1. When the potato is once or twice cultivated, the soil is covered enough; 2. The southern planting area can cover the straw or other straw hulls between the rows or the ridge soil; 3. The commercial potato should not be stored for a long time after storage. Exposure in high light; 4, planting seed potato area in the north, green head potato can be hired in advance before the frost to remove the green potato, stored in advance to avoid frostbite, the second year can also be used as seed potato.
The above is the relevant knowledge and prevention measures for the cause of potato shaped potato, for your reference, please pay attention to the Hui Nong School for more details.
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