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What pesticide is effective for controlling leafminer moths?
Leafminer moth is a common pest during the growing period of citrus, peach trees, and lemon. During the larval stage, it feeds on the tender stems of new shoots and forms silvery-white curved tunnels, causing new leaves to curl and harden. So what pesticide should be used for leafminer moth? 1. What pesticide is used for leafminer moth
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What pesticide is effective for controlling soil pests?
Pests are a source of great frustration for farmers, especially certain soil pests that affect plant root growth, so what pesticide should be used for soil pests? 1. What pesticide should be used for soil pests? 1. Imidacloprid: To control mole crickets, use a 10% imidacloprid 1500x solution mixed with roasted fragrant wheat
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What pesticide is best for controlling diseases and pests in lotus root?
Lotus root has very high edible value and medicinal value, but diseases and pests are unavoidable during the planting process. When diseases and pests appear, what pesticide is best for controlling them? 1. What pesticide to use for lotus root. Different diseases and pests require different pesticides and dosages. Lotus
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Which pesticide is effective for controlling striped flea beetles?
The striped flea beetle is a common pest during crop growth. Once a crop is bitten, its surface becomes pitted and it loses its commercial value. So which pesticide should be used to control the striped flea beetle? 1. Which pesticide should be used for the striped flea beetle? For the striped flea beetle, you can choose
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What pesticide is effective for controlling grasshoppers?
Grasshoppers, also known as locusts, are a common insect in the field. They like to eat the stems of plants and harm the growth of crops. Farmers get headaches when they see them. So what pesticide is used to control grasshoppers? 1. What pesticide is used to control grasshoppers? Grasshoppers can be controlled with dichlorvos, malathion,
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Which pesticides work well for controlling insect eggs
What farmers hate most is pests, which affect crop growth. To kill pests, you must start by killing the eggs. Different pesticides target the eggs of different pests. Below, let's look at what pesticides to use for insect eggs. Lime sulfur: It is generally believed that lime sulfur has a certain effect on overwintering scale insect nymphs, as well as on mites and mite eggs. Using lime sulfur can reduce the base of orchard pests and diseases. When using lime sulfur, if you then use other pesticides, it is recommended to leave an interval of half a month, so as to avoid pesticide damage.
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Which pesticides work well for controlling soybean root rot?
Soybean, also known as shu and yellow bean, is one of China's important food crops, cultivated in all regions and widely grown around the world. So which pesticides are used for soybean root rot? What are the symptoms? 1. Which pesticides are used for soybean root rot? For soybean root rot, use 50% Anke wettable powder at 1500 times dilution
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What are the methods for controlling pepper seed diseases
According to experts, pepper seeds generally carry the following latent diseases: damping-off seedlings, Rhizoctonia rot, bacterial leaf spot of pepper, pepper viral disease, pepper Phytophthora blight, pepper Verticillium wilt, etc. 1. Hot water seed soaking Soak the seeds in hot water at 60°C, with a water volume 3
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Methods and Technical Key Points for Controlling Rice Pests and Diseases in the Mid-to-Late Stage
This year's rice insect pests are mainly migratory and boring pests, with an estimated affected area of 730 million mu-times. With multiple pests and diseases jointly affecting mid-to-late stage rice, experts recommend using a combination of agroecological control techniques and chemical control measures.
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Methods for controlling freeze injury in sweet potato cultivation
Sweet potato freeze injury, also called hard-heart sweet potato. [Disease diagnosis] When storage roots are frozen, at first the skin color shows no obvious difference from healthy roots, only slightly losing its luster. Later, the skin can be seen to take on a slightly dark, lusterless appearance; pressing the frozen part lightly with a finger gives a springy feeling; cutting open a frozen sweet potato shows that the flesh near the skin rapidly turns brown, does not exude white milky sap, and squeezing it by hand releases clear water. Generally, based on the speed at which the flesh turns brown, the degree of freezing can be estimated; the faster the browning, the more severe the freezing. Frostbitten storage roots often form a hard heart, taste bitter, and will not cook soft. After storage roots are frozen, they are easily attacked by weakly parasitic fungi, causing rot. ⟦4 <p>Sweet potato freeze injury, also called hard-heart sweet potato. </p><p></p><p>[Disease diagnosis] When storage roots are frozen, at first the skin color shows no obvious difference from healthy roots, only slightly losing luster. Later, the skin can be seen to take on a slightly dark, lusterless appearance; pressing the frozen part lightly with a finger gives a springy feeling; cutting open a frozen sweet potato shows that the flesh near the skin rapidly turns brown, does not exude white milky sap, and squeezing it by hand releases clear water. Generally, based on the speed at which the flesh turns brown, the degree of freezing can be estimated; the faster the browning, the more severe the freezing. Frostbitten storage roots often form a hard heart, taste bitter, and will not cook soft. After storage roots are frozen, they are easily attacked by weakly parasitic fungi, causing rot. </p><p>[Cause] When storage roots are exposed to a low-temperature environment below 9°C for a relatively long time, their physiological functions are disrupted, the flesh tissue is frostbitten, a hard core forms, and the skin and tissue become necrotic. However, after freezing, a period of time must pass before rotting begins. The lower the temperature, the more severe the freeze injury. The longer the low temperature lasts, the more severe the freeze injury. When storage roots suffer freeze injury, rotting generally has two peaks: one is when harvesting is too late in production and the roots freeze in the field, called freeze injury outside the storage pit, and rotting begins about 15 days after being put into the pit; the other is during the middle and late stages of pit storage, when freezing occurs because the pit is shallow or cold protection and insulation are poor and the pit temperature is low, followed by rotting. Generally, at 4-5°C, rotting begins after lasting half a month, and at 6-7°C, rotting occurs only after 1 month. </p><p>[Control measures] (1) Harvest and put into the pit at the proper time to prevent storage roots from freezing. The suitable harvest time for sweet potato should be when the local average temperature of the ten-day period drops to about 14-15°C. Harvest promptly on a sunny day, and the storage roots should be put into the pit on the day of harvest. (2) Disinfect the storage pit. Before the storage roots are put into the pit, a layer of soil should be scraped from the walls of an old pit, and then chemicals should be used for disinfection: fumigate with 30-40 milliliters of 402 water-based fungicide per cubic meter of space, or spray the walls around the pit with a 50-fold formalin solution; in either case, it must be sealed for two days, then opened for ventilation, and used after another two days. (3) Carefully select storage roots. Any storage roots that are diseased, insect-bitten, or frostbitten by frost should be removed and must not be put into the pit. (4) During harvesting, transport, and pit storage, handle them carefully, lifting and setting them down gently, and prevent wounds as much as possible. (5) Manage the temperature and humidity of the storage pit well. To prevent storage roots from freezing and ensure safe storage, the pit temperature should be kept at 11-13°C and the relative humidity at 75%-80%.</p>
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