Potato Frost and Freeze Protection Technology

The temperature is low in winter and potatoes are easily damaged by frost. Farmers who grow potatoes must strengthen daily management and take measures to prevent frost and freezing. The following editor will introduce potato frost and freezing prevention technology. Let’s take a look.

1. Increase the application of heat-generating fertilizers

Appropriately increase the application of heat-resistant fertilizers and potassium-containing fertilizers such as wood ash. Thermal fertilizers can increase ground temperature, and potassium can affect the permeability of cells and increase the concentration of cell fluid, thereby enhancing cold resistance.

2. Watering and heat preservation

1-2 days before the cold wave arrives, fill half of the furrows with water and keep the furrow surface moist to increase the heat capacity of the soil, reduce thermal conductivity and increase ground temperature. Drain the water after the cold wave.

3. Fumigation to dispel frost

At around 11 o'clock in the evening when frost comes, use a stove or old iron barrel filled with rice husks or sawdust, pour a small amount of waste diesel or waste oil on it, cover it with a little soil, and place 5-6 per acre for fumigation. Or sprinkle an appropriate amount of sulfur powder on weeds, straw, etc. and pile them into piles, 5-6 piles per acre, lightly compact them with dry, fine soil, and light a fire in the upwind direction to achieve the purpose of frost repelling and preventing frost.

4. Wash off the cream in time

After the frost, an early inspection should be carried out. If frost is found on the plants, spray water to wash away the frost in time before the frost thaws in the morning. This will not only clean the frost water but also reduce the temperature difference and prevent physiological water loss.

5. Prevent excessive growth

During the budding period of potatoes, evenly spray 35 grams of 15% paclobutrazol and 60 kilograms of water per mu to prevent the plants from growing too tall, promote lateral growth, make the plants shorter, make the leaves thicker and the stems thicker, make the leaf color darker, and enhance the cold resistance. At the same time, it can promote underground growth, accelerate tuber enlargement and increase yield.

6. Cover to prevent freezing

Before frost comes, spread wood ash on the leaves, or cover them with straw, weeds, or plastic film to prevent frost.

7. Drug anti-frost

1-2 days before the arrival of frost, spray 400-500 times the concentration of plant antifreeze solution to reduce the damage of frost to crops.

The above is an introduction to potato frost and freeze protection technology. After the potatoes are frozen, the leaves wither, but the main stem is still alive. To promote the growth of new stems and leaves at the nodes, growers can apply quick-acting fertilizers and water in time.