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What are the methods for preventing and controlling lettuce pests and diseases? Learn it all in one article
Methods for preventing and controlling lettuce pests and diseases
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Spring marks the critical period for preventing and controlling celery heart rot
Celery heart rot is a common physiological disease in spring celery production. The tender tissue at the growing point of the celery turns black and dies. Subsequently, the root system and some stems and leaves of the celery also die one after another. The control methods are as follows: 1. Rational fertilization. Apply sufficient base fertilizer and increase the application of phosphorus, potassium and boron fertilizers to cultivate robust plants and improve disease resistance. Do not...
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What are the methods for preventing and controlling deformed strawberries in greenhouses?
Using greenhouse cultivation is a good way to increase strawberry yields and income. However, because greenhouse cultivation is highly technical, especially during winter and early spring, when temperatures are low, light is weak, and the climate is changeable, improper management often leads to many abnormal fruits that are too thin, too fat, curved, flat in shape, or uneven on the surface...
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Key Technical Points for Preventing Spindly Growth in Greenhouse Tomatoes
The main causes of spindly seedlings and stunted seedlings in greenhouse tomato cultivation are insufficient light, excessively high temperatures and excessive moisture. Once spindly or stunted seedlings appear, the harm is considerable. Spindly seedlings differentiate flower buds late, drop many flowers, have a low survival rate, and suffer large yield reductions, while also failing to achieve early maturity. The measures to prevent spindly seedlings mainly...
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Key Technical Points for Preventing Physiological Diseases of Autumn Tomatoes
Early blight: After onset, concentric ring-patterned lesions appear on the leaf surface, dark brown, water-soaked. Before and after onset, spray with a 500-fold dilution of 70% mancozeb wettable powder, or a 400-fold dilution of 75% chlorothalonil wettable powder, once every 7 days, for 3 to 4 consecutive sprays.
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Practical tips for preventing sprouting during potato storage
Symptoms: Also known as potato verticillium wilt or premature ripening disease. In the early stage of the disease, the leaf tips turn yellow along the leaf margins, and yellowing spreads inward from the leaf veins; later, the leaves dry up and turn from yellow to brown, but do not curl, until all compound leaves die without falling off. When the rhizome is infected, the initial symptoms are not obvious. After the leaves yellow, the vascular bundles at the cut rhizome have already turned brown, and later the aboveground stems...
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For high yardlong bean yields, preventing the pod borer is key
The adult pod borer moths lay eggs on the tender leaves of the plants. After 5-7 days, the hatched larvae bore into the pods and feed on the beans. Once larvae past the 3rd instar have bored into the pods, spraying pesticides can hardly kill them. Therefore, to control this pest, fertilizer and water management should be strengthened to ensure uniform growth and a relatively concentrated flowering and pod-setting period, so that in the critical period the pest can be...
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Does the spicier the white radish, the better its cancer-preventing effect?
The interferon inducer in white radish, its double-stranded ribonucleic acid, has a relatively high tolerance to enzymes in the mouth. It is not easily degraded during swallowing and has no side effects. In recent years, some medical researchers in China have found that when the interferon inducer substance contained in white radish was injected into mice, the malignant tumors in their bodies shrank by 50%-60%...
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A Detailed Guide to Preventing and Treating Small Fruit and Fruit Cracking in Melons
As temperatures rise, melons grow rapidly, and the critical period for field management has arrived. Recently, some farmers have reported that small fruit and fruit cracking occur during melon growth. How should these problems be solved? To prevent small fruit, strengthen fertilizer and water management in the early stage to promote vegetative growth. According to variety characteristics and cultivation...
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Countermeasures for preventing seedling diseases from pre-sowing to seedling stage in cotton
Cotton seedling diseases mainly include damping-off, anthracnose, Pythium blight, root rot and more than a dozen others, collectively known as cotton seedling diseases. In mild cases, growth is slow, plants wilt and develop late; in severe cases, there are gaps and broken rows in the field, with plants dying in patches, causing tremendous damage. After cotton seedlings become diseased, although a series of disease prevention and treatment measures have been taken, such as timely ventilation of plastic-film cotton, intertillage near the roots...
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