Appropriate harvest. Harvesting is too early and the yield is low. If harvesting is too late, tubers are perishable and affect yields in the event of rainy days. Therefore harvesting at the appropriate period (physiological maturity of potatoes) is the key to obtaining high yields of potatoes.
The signs of potato ripening are: 1. The stems and leaves of plants turn green to yellow and gradually yellow. 2. The umbilical part of the tuber and the growing stalk are easy to fall off. 3. The toughness of the tuber skin is larger, the cortex is thin, and the tuber is stiff. When the tuber is cut, the wound secretes a small amount of juice and it is easy to dry.
Harvest time. Avoid sun exposure during harvesting. Although harvesting on sunny days is convenient for picking up, the potato after harvesting is not only susceptible to greening, but also produces a toxic chemical called a solanine, and it is perishable. Therefore, it is important to pay attention to sunny harvesting. Grasp the daily harvest time and try to avoid high temperatures and exposure at noon. The correct harvest time is: Before 9:00 a.m. during the day and after 5 p.m., care must be taken not to be exposed to direct sunlight for potatoes that have been harvested and cannot be removed as quickly as possible.
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