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How to control scarab beetles? Poison bait trapping works well
The copper-green scarab beetle (Anomala corpulenta) has a broad diet and can feed on citrus leaves, ripe peaches, grapes, and more, causing quite serious damage. Currently there is a lack of effective pesticides. For this reason, we used the poison bait trapping method and achieved very good results. When adult scarab beetles appear in large numbers from May to July, cut ripe watermelon (inferior melons also work) into several pieces, sprinkle a small amount of 3% carbofuran granules on the surface of the flesh, then place them separately in containers such as soil baskets and bamboo baskets, and set them on the forks of citrus trees. After a few days, large numbers of scarab beetles will be poisoned to death inside the watermelon. Replace the
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Key Management Techniques for Autumn Cropping of Agaricus bisporus (Button Mushroom)
Autumn mushroom management should be based on the environmental requirements for mycelial and fruiting body growth, correctly handle the contradiction between outside temperature and indoor temperature, and flexibly manage bed watering and mushroom house ventilation under natural temperature conditions to meet the requirements for mycelial and fruiting body growth. 1. Mycelial growth in the casing soil layer: After the moisture of the casing soil layer has been adjusted, the stage of mycelial growth management in the soil layer begins. The management principle for this stage is: under the condition of maintaining relatively constant air humidity in the mushroom house (80%-85%) and mushroom house temperature (20-22°C), carry out appropriate ventilation to ensure the mycelium grows fully and well within the soil layer.
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Detailed Explanation of Key Points for Storage and Fresh-keeping Techniques of Peaches, Plums and Apricots
Peach, plum and apricot (including cherry) fruits all contain a hard stone and belong to the drupe category of fruits, sharing common characteristics in fruit development and postharvest physiology. It is precisely because the fruit contains a hard stone that a double-S growth curve appears during growth. Peach, plum and apricot fruits have high respiration intensity; all have a respiration peak, so they all belong to the climacteric type of fruit, which determines that they have basically similar storage, transport and fresh-keeping technical measures. However, as tree species and varieties differ, the storage, transport and fresh-keeping techniques adopted also differ. Peaches and plums generally
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Potato Intercropping Cultivation Models and Key Technical Points
To improve land utilization and increase farmers' income, several intercropping and relay-cropping models with potato as the main crop are introduced here, for the reference of farmer friends and grassroots leaders in adjusting the agricultural structure. 1. Potato-cotton. Potatoes are sprouted in late January and sown in mid-to-late February, using plastic film mulch cultivation. The varieties selected are virus-free potatoes Zheng Yin No. 5 and Zheng Yin No. 7, bred by the Zhengzhou Fruit Research Institute of the Chinese Academy of Agricultural Sciences; for cotton, the large-plant, disease-resistant Biao Za A1 is preferable. Potatoes are planted in double rows on high ridges, with wide rows of 8
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Detailed Explanation of Key Points of Potato Storage and Fresh-Keeping Technology
The edible part of the potato is the tuber, which contains a large amount of carbohydrates and rich mineral elements. Potatoes are resistant to storage and transportation and can be supplied year-round. They are a popular fresh-eating vegetable and raw material for processed products that help balance market supply during off-peak and peak periods. I. Storage and Characteristics. After harvest, potatoes generally have a dormant period of 2-4 months, and the length of the dormant period varies with different varieties. Late-maturing varieties have a short dormant period, while early-maturing varieties have a long dormant period. Different degrees of maturity also affect the length of the dormant period. The stem of immature potatoes has a longer
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How to judge the severity of fish gasping at the surface
To judge the severity of fish gasping at the surface, the main criteria are the time when the fish begin to gasp, the location of the gasping, the size of the water surface area where they gasp, and the species of fish gasping. 1. Dark gasping. This generally occurs when it is already daylight but the sun has not yet risen; the fish move about on the water surface in the center of the pond and on the upwind side, and bursts of splashing water can be seen. At this time the dissolved oxygen content of the pond water is 2-3 mg/L, which is normal gasping. 2. Light gasping. This mostly occurs at dawn; the fish are on the water surface in the center of the pond and on the upwind side, while wild trash fish gasp at the pond edge.
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Occurrence and Control of Carnation Damping-off
The pathogen of this disease is called Thanatephorus cucumeris, a fungus of the phylum Basidiomycota. Its asexual state is called Rhizoctonia solani, a fungus of the class Deuteromycetes. The pathogen mainly overwinters in the soil as sclerotia or mycelium along with diseased plant residues, and can live saprophytically in the soil for 2-3 years. After being spread by water flow and farm tools, the pathogen directly invades the host. Sowing too deep, relatively high temperatures, and excessively wet soil easily induce this disease, and it is also prone to occur under open-field cultivation. It is especially severe in continuous cropping fields during warm and rainy seasons. Symptoms are also called stem rot and basal rot. It begins at the stem base near the ground, producing dark brown oval or irregular water-soaked
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New soybean topping technique for higher yields: operate this way to get a bigger harvest
Soybean terminal buds have strong growth vigor and consume a lot of nutrients. Removing the terminal buds of soybean transfers nutrients to the pods, which helps increase yield. This is especially true for soybean with higher soil fertility and vigorous growth; timely removal of the terminal buds makes the yield-increasing effect even more pronounced. The method for removing soybean terminal buds is: at the early flowering stage, the peak of soybean growth, pinch off the 2-3 cm tender tip at the top of the main stem, so that apical growth is inhibited and nutrients are concentrated for reproductive growth, promoting more flowering and more pod setting, and helping to make the plants shorter and sturdier and enhance stress resistance. Soybean topping should follow the “three
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Why do continuous and alternating soybean cropping reduce yields? Cause analysis and countermeasures
With China's accession to the WTO and the opening-up policies of the grain market, the problem of continuous and alternating soybean cropping has become increasingly serious, and the yield reduction increases as the number of consecutive cropping years rises. According to surveys and research, alternating cropping reduces yield by 6.1%, one year of continuous cropping by 9.9%, two years of continuous cropping by 13.8%, and three years of continuous cropping by 19.0%. Moreover, in continuous and alternating cropping soybeans, the 100-seed weight decreases, the rate of diseased seeds and insect-damaged seeds increases, and commercial quality drops significantly. With long-term continuous cropping of more than 3 years, the protein content of soybeans increases markedly while the fat content decreases markedly. According to research by scientific research departments
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Reasons for Yield Reduction in Continuous and Alternate Soybean Cropping and Yield-Preserving Techniques
I. Reasons for Yield Reduction in Continuous and Alternate Soybean Cropping Continuous and alternate soybean cropping causes plants to grow slowly and become short, with yellowing leaves, fewer pods, and fewer seeds, ultimately leading to a significant reduction in yield. In the short term, continuous and alternate cropping intensifies the damage from cyst nematodes, root maggots, root rot, pod borers, gray leaf spot, and malignant weeds, causes unbalanced depletion of soil nutrients, leads to deficiencies in soil nutrient elements, increases pathogenic fungi and decreases beneficial bacteria in the soil, and produces certain toxins, resulting in a severe decline in soybean yield and quality. In the long term, after long-term accumulation and reproduction, diseases, insects
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