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Key Management Techniques for Garlic at the Green-Up Stage in Early Spring
In late February, as the weather gradually warms, the seedlings turn green and begin to grow adventitious roots from the lower part, and the garlic scapes and bulbs begin to differentiate. At this time, ensuring robust seedling growth and accumulating more nutrients for the differentiation of garlic scapes and bulbs is the key to achieving high-quality, high-yield garlic. Years of continuous cropping in major garlic-producing areas have led to a relative deficiency of trace elements (iron, copper, manganese, zinc, magnesium, molybdenum, boron, cobalt, etc.) and calcium in the soil. A lack of trace elements directly results in weak, poorly developed garlic plants. In severe cases, fungi and bacteria can invade, causing various diseases that lead to reduced yields or even total crop failure.
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Spring management of garlic after overgrowth must start early
For garlic sown in autumn 2006, temperatures from planting through early December remained higher than in previous years, which accelerated the growth of the garlic sprouts. Before winter, the garlic grew to 7-10 leaves (the optimal seedling age for overwintering is 5-7 leaves), showing overgrowth, and had already begun "mother bulb rot," with pest problems occurring. As a result of overly rapid growth, the garlic suffered from poor nutrient accumulation, reduced stress resistance, slow greening after the New Year, severe disease, and reduced high-yield potential. In spring, garlic must complete a series of growth processes including greening, vigorous seedling growth, garlic scape elongation, and bulb enlargement. On the basis of applying sufficient base fertilizer, garlic in spring
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How to control mite damage in oyster mushroom cultivation in spring
Oyster mushroom is a popular edible fungus with a broad consumer base, high biological efficiency and good economic returns, so its cultivation area is relatively large. However, the raw materials used for spring cultivation of oyster mushrooms are generally left over from last year and often carry mites. As temperatures gradually rise, conditions become suitable for mite growth and reproduction, and they multiply quickly. They mainly feed on oyster mushroom mycelium and fruiting bodies, causing reduced yields and, in severe cases, total crop failure. 1. Distribution, morphology and biological characteristics of Acarus siro and Tyrophagus putrescentiae 1. Acarus siro (1) Distribution and damage:
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Detailed Explanation of Key Techniques for Rapid Mycelial Growth of Oyster Mushrooms in Spring
In spring, temperatures are low and oyster mushroom mycelium grows slowly. Measures such as increasing the amount of lime, bagging directly, increasing the inoculation amount, creating multiple holes for oxygen supply, stacking bags for mycelial growth, raising the greenhouse temperature, and regularly turning the stacks can ensure successful mycelial growth. Generally, the mycelium fully colonizes the bags in 20 days, primordia form in about 1 month, and fresh mushrooms can be harvested and brought to market in about 35 days. 1. Increase the amount of lime. When mixing the substrate, increase the lime amount to 5%, bringing the pH of the substrate to 8-9, so as to inhibit the growth of contaminating microorganisms and increase the mycelial growth rate. 2. Bag directly. After the raw substrate is mixed, bag it directly without fermentation
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How to prevent and control cotton seedling diseases? Detailed spring prevention and control methods
In recent years, due to low temperatures in spring, seedling diseases in direct-seeded cotton fields have occurred severely, causing large numbers of dead seedlings in cotton fields. In order to improve the economic benefits of cotton farmers and reduce the losses caused by diseases, the symptoms and prevention and control methods of several cotton seedling diseases are introduced as follows: 1. Symptoms of damaged cotton seedlings 1. Anthracnose: Both leaves and stems can be affected. After the seedlings are damaged, reddish-brown spindle-shaped streaks appear at the base of the stem, with longitudinal cracking. In severe cases, the lesions expand, turn brown, blacken, and rot, leading to seedling death. When the weather is humid, the lesions produce orange-red sticky substances.
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How to raise goslings in early spring? Detailed explanation of key feeding points
Select good goslings. Healthy goslings are lively in behavior, have big and bright eyes, respond quickly, can stand firmly after their down dries, and have strong calls. When held up by the neck with your hand, their feet quickly retract. Weak goslings with large abdomens or crooked heads should be culled. Suitable temperature: 25°C-28°C for 1-5 days of age, 23°C-26°C for 6-10 days of age, 20°C-24°C for 11-20 days of age, and 17°C-20°C after 21 days of age. Careful feeding: feed at fixed times and in fixed amounts, and it is best to feed small amounts frequently, adding more as needed, until they are 80% full. Goslings
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How to Diagnose and Treat Swine Influenza in Winter and Spring
Swine influenza is an acute, highly contagious respiratory infectious disease. The disease strikes suddenly, spreads rapidly and has a high incidence rate. In winter and spring, sudden climate changes, extensive feeding management, malnutrition of pigs and reduced resistance can easily lead to outbreaks and epidemics of the disease. 1 Epidemic characteristics: Seasonality is obvious, and it mostly occurs in autumn and winter when temperatures change abruptly, and in spring. Pigs of all ages can be infected. The virus is present in the nasal fluid, tracheal and bronchial exudate, lungs and pulmonary lymph nodes of affected pigs. Mainly
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Key Technical Points for Pest Control and Fertilization of Wheat in Winter and Early Spring
When temperatures are relatively low in winter and early spring, pest control and fertilization in wheat fields should pay attention to the following two points: For pest control, to control wheat aphids, red spiders and other pests, spraying omethoate is more effective than dimethoate. This is because the insecticidal efficacy of dimethoate against pests decreases significantly as the temperature drops, while the efficacy of omethoate is less affected by temperature and can exert normal insecticidal action at temperatures below 15°C. Similar to omethoate is fenvalerate; the toxic efficacy of fenvalerate at 15°C is instead stronger than at 25°C. Fertilization: For topdressing, applying ammonium bicarbonate is better than urea. Ammonium bicarbonate
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Key Technical Points for Imitation-Wild High-Quality Cultivation of Oyster Mushrooms in Winter and Early Spring
Oyster mushrooms produced using imitation-wild cultivation techniques not only taste as fresh and delicious as wild ones, but also truly achieve ecological, high-quality, and high-yield production. Even in the cold winter and low-temperature early spring seasons, high-quality oyster mushrooms that are thick, fleshy, fresh, and tender can be produced in a relatively enclosed shade shed by making full use of ground temperature. This method increases yield by more than 60% compared with conventional cultivation methods, and by more than 40% compared with cultivation methods such as mushroom walls, with a biological conversion rate of more than 220%. 1. Mycelium culture. Use high-pressure or atmospheric-pressure sterilization, inoculate conventionally, and culture until physiologically mature mycelium is obtained.
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How to cope with severe weather in winter and spring greenhouse oyster mushroom production?
In winter and spring, severe weather such as snowfall, cold waves, strong winds, prolonged overcast fog, and sustained low temperatures often arrives uninvited. In mild cases it causes reduced oyster mushroom yields and lower quality; in severe cases it causes total crop failure. Therefore, prevention of and response to severe weather should be strengthened. Main preventive measures: wipe the greenhouse film to improve light transmittance; inspect the greenhouse facilities to ensure the greenhouse's insulation performance; prepare insulating and warming items such as straw mats and old greenhouse film. Response management measures: Cold wave and strong wind cooling weather: Before a cold wave and strong winds arrive, seal the vents tightly, cover the greenhouse film securely, and add a layer of intact old plastic film over the straw mats.
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