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Chinese cabbage in autumn is prone to cabbage worms, so how can you control them more effectively?
Summary: Autumn Chinese cabbage is prone to cabbage worms, and these methods leave lower pesticide residues. Chinese cabbage is one of the vegetables in greatest demand in winter, especially in the northern vegetable market. Basically, one family can eat two or three bags of Chinese cabbage over a winter. Pickled Chinese cabbage, stewed Chinese cabbage, vinegar-tossed Chinese cabbage, and so on - Chinese cabbage is truly an indispensable good vegetable on the winter dining table. But the frequent outbreak of cabbage worms also really gives vegetable growers a headache. On Chinese cabbage that had been growing well, once cabbage worms crawl over the leaves, the leaves are either covered with holes or covered with insect droppings. This not only affects appearance, but more importantly affects yield.
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How to effectively prevent and control cotton bacterial angular leaf spot
I. Agricultural measures. 1. Prepare the soil carefully, apply sufficient basal fertilizer, ensure adequate pre-planting soil moisture, and select disease-resistant varieties. 2. Practice rational crop rotation, plow deeply and irrigate in winter to promote the decomposition of diseased plant residues. 3. During the seedling stage, strengthen intertillage, reduce soil moisture, apply less nitrogen fertilizer and more phosphorus and potassium fertilizer, and cultivate strong seedlings. 4. Strengthen cotton field management, drain promptly after rain...
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How to effectively prevent and control hollow heart in spring watermelons
Symptoms: Gaps or hollow cavities appear in the flesh inside the watermelon fruit. Causes: It occurs easily when fruit is set at low nodes, when excessive nitrogen nutrition causes rampant vine growth, or when fruit set is poor and leaf area increases. The main cause is excessive accumulation of nutrients in the plant. Hollow fruit usually shows longitudinal grooves on the fruit surface, with thick rind, irregular fruit shape...
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How to Effectively Prevent and Control Fertilizer Burn in Tomatoes
Leaf mold is a major disease of greenhouse tomatoes. It mainly damages the leaves. Insufficient light, poor ventilation, and excessive humidity inside the greenhouse are the main causes of leaf mold. The control methods are: choose disease-resistant varieties, such as Jingyan Jiafen No. 17. Strengthen temperature and humidity management, and ventilate in time to reduce humidity. Balance fertilization, use formula fertilization...
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How can celery sclerotinia rot be controlled effectively?
What should you do when sclerotinia rot affects celery? Celery sclerotinia rot can damage leaves, petioles and stems. Usually the leaves are affected first, showing dark dirty patches, and when humid the surface is densely covered with white mold. It then spreads downward and causes the petioles and stems to become affected. The affected parts are brown and water-soaked, and when the disease progresses rapidly soft rot forms, with white...
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"Five Measures" for Effectively Controlling Black Head Disease in Enoki Mushrooms
Black head disease, also known as bacterial brown blotch disease, is caused by a Pseudomonas bacterium belonging to the phylum Schizomycophyta and the class Schizomycetes. The pathogen is rod-shaped, forms white colonies, and shows a negative reaction to Gram staining. 1. Conditions for occurrence: The internal cause of this disease is the variety's lack of disease resistance, while the external causes are high temperature, high humidity, or spraying unclean...
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How to fertilize cotton effectively during the flowering and boll-setting stage
Cotton farmers should earnestly strengthen the management of cotton fields after rain, prevent premature aging, prevent boll rot, and control pests and diseases, so as to promote normal boll-opening growth of cotton. Focus on the following measures: 1. Drain waterlogged fields early to prevent lodging. August and September are the cotton boll-opening period. In view of the rainy climate this year, for cotton fields with standing water, after rain...
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How to fertilize effectively in sugarcane cultivation? Key points of the method explained
How to fertilize effectively in sugarcane cultivation? Please note that because sugarcane has a well-developed root system and a long growth period, each crop removes a large amount of nutrients from the soil. Therefore, applying more organic fertilizer when growing sugarcane can improve soil structure and is very effective at increasing yield and improving the soil. Base fertilizer: apply enough base fertilizer...
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How to Grow Garlic Effectively? High-Yield Cultivation Techniques Shared
How can garlic be grown effectively? Please let me explain. Taking the most commonly used autumn-sowing cultivation method in southern China as an example, here is a brief description of each cultivation technique. 4.1 Soil preparation and basal fertilizer application. The soil preparation and fertilization work before sowing is basically similar to that for onions. Avoid continuous cropping; the soil should preferably be fertile, well-drained sandy loam...
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How to effectively prevent twin bulbs in onions
How to prevent onion "twins"? Please advise. To improve the market quality of onions, early prevention of "twins" is key. Onions have a high incidence of "twins", which seriously affects their market value, so prevention should be carried out as early as possible. The causes of twins are: sowing too early, with seedlings growing too large before winter; applying too much nitrogen fertilizer during the seedling stage...
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