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Pear Tree Early Spring Frost Damage Protection Methods and Technical Key Points
I. Frost Prevention 1. Spray salt water: Before the late frost arrives, spray the tree with 10-20% salt water. This can increase the concentration of cell sap in the tree, lower the freezing point, and also increase air humidity. When water condenses in the cold, it releases latent heat, thereby protecting against frost damage. 2. Spray hormones: In early spring, spray 0.1-0.2% maleic hydrazide solution to inhibit budding and delay flowering,...
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Management advice for spring potatoes after late-spring cold damage
1. Variety selection. Leaf lettuce is grown mainly for its leaves, which are eaten mostly raw, hence it is also called lettuce. The leaves are deeply lobed and wrinkled; it is highly adaptable and easy to cultivate. Good varieties include Guangzhou Dongshan lettuce (soft-tail lettuce), glass lettuce, Lettuce King, and American Great Quick Growth, etc. 2. Seedling raising. Leaf...
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Differences Between Potato Frost Damage and Disease and How to Identify Them
Frost damage: Judging by the plant's outward appearance, after the plant is frozen, the leaves and heart leaves show no lesions, and the leaf color is dark green. When exposed to sunlight, the leaves appear wilted, as if they had been boiled. After 1 to 2 days, the leaf margins curl inward until they wither and crumble, but the new leaves growing from the heart leaf show no wilting symptoms. Disease: After the plant is affected...
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How do you identify and control Colorado potato beetle damage?
The Colorado potato beetle, also known as the Colorado potato leaf beetle, is a class I quarantine pest in China. This insect originally lived on wild solanaceous plants on the eastern slopes of the Rocky Mountains in the western United States. Because cultivated potatoes provide this beetle with good nutrition, and because potatoes are widely grown and transported around the world, ...
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How to remedy herbicide damage in peppers?
Producing 1000 kg of peppers requires 5.2 kg of pure nitrogen, 1.2 kg of phosphorus pentoxide, and 6.5 kg of potassium chloride. Before planting, apply 5000 kg of high-quality farmyard manure and 50 kg of phosphate fertilizer per mu as a base fertilizer. Start the first topdressing at the early stage of pepper fruit enlargement to promote fruit swelling. Apply 15-18 kg of pure nitrogen and 18-20 kg of phosphate fertilizer per mu, ...
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Is this symptom on rose leaves damage from thrips?
Gardening Lecture Episode 14: Is this symptom on rose leaves damage from rose thrips? Let's take a look at what leaves damaged by rose thrips look like! This is the knowledge of Gardening Lecture Episode 14. Today I'll tell you about...
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Protect kiwifruit from frost damage in spring, growers should prepare early
In recent years, the "late spring cold" phenomenon has been extremely prominent. Spring frost damage is one of the disastrous weather events that causes few kiwifruit buds to sprout, poor pollination, a low fruit-setting rate, delayed growth period, and setbacks to high yield and increased income. Preventing spring frost damage to kiwifruit is an important part of spring management work for kiwifruit. Recently, the reporter went to Shaanxi...
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How to remedy lychee trees after frost damage? A new method is here
Winter temperatures are relatively low and rainfall is relatively scarce, with low-temperature frost and freezing weather occurring frequently. This caused most lychee trees to suffer frost damage to varying degrees, and the top leaves were frozen and killed. Therefore, frost prevention work must be done promptly, and the specific measures are as follows: before the frost arrives, spray the entire orchard with New High Lipid Film to keep warm and prevent freezing...
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What are the control methods for waterlogging damage in wheat?
Boron deficiency symptoms in wheat generally appear first in new growth, showing as terminal buds that easily die back, a long flowering duration, sometimes heading and tillering at the same time, and a prolonged growth period; stamens are poorly developed, anthers are thin and small, empty and not dehiscing, not shedding pollen, pollen is scarce or malformed, the ovary swells horizontally, the glumes do not close front and back, and later wither;...
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What are the damage symptoms of chestnut blight?
Damage symptoms of chestnut blight: The pathogen produces discolored lesions on smooth bark, round or irregular in shape; on rough bark, the lesion margins are indistinct, and as they continue to expand, the bark splits longitudinally. In spring, many orange-yellow warty stromata can be seen on the affected bark. After autumn, the stromata turn orange-red to dark red...
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