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When growing strawberries, weeds in the strawberry patch must be controlled diligently
Strawberry plants are low-growing and planted at high density, making weed control difficult. In addition, because strawberry patches receive large amounts of base fertilizer and irrigation water, weeds grow abundantly. Weed damage can cause strawberry yields to drop by about 15%-20%. Therefore, attention should be paid to weed control and integrated control measures should be adopted.
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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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How should aphids on peanuts be controlled?
Peanuts are eaten quite a lot in our daily lives. We all know that peanuts have many benefits: eaten raw, they can help nourish the blood, and they can also be pressed into peanut oil, which is also very good. Therefore, peanuts have many uses. How to control aphids when growing peanuts
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Wheat blossom midge can be controlled by broadcasting pesticide-treated soil at the booting stage
The wheat blossom midge overwinters as mature larvae in round cocoons in deep soil and can remain dormant for many years. In spring, when the soil temperature at 10 cm rises to about 7°C, which is when wheat begins jointing, the larvae break out of their cocoons and move toward the soil surface. In mid-April, wheat enters the booting stage, and the larvae
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How to control soybean leaf rollers in soybean cultivation
The soybean leaf roller is a major pest in soybean production in summer and autumn. Besides damaging soybeans, it also harms leguminous plants such as mung beans and peanuts. In recent years, as winter temperatures have risen, its overwintering population has increased, and its occurrence in soybean fields has worsened year by year. Currently it is the
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What are the methods for controlling pests and diseases in peony cultivation
Peony virus disease Symptoms: Peony ringspot virus (PRV) produces concentric ring-like round spots of dark green and light green on the leaves, along with small necrotic spots; the plant does not become dwarfed. TRV also causes ringspots or ring spots of varying sizes, sometimes irregular in shape, while PLCV causes
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How are pests and diseases prevented and controlled during lemon cultivation?
The main fungal diseases of lemon fruit during storage are: black rot, sour rot, stem-end rot, blue and green mold, and anthracnose; the main physiological diseases are: dry scar and edema. (1) Stem-end rot: divided into brown stem-end rot and black stem-end rot, their symptoms are similar, but brown stem-end rot
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Early defoliation of apricot trees can be effectively controlled with EM original solution
Editor's note: Zhou Jinlong from Dongniuzhuang Village, Guangzong County called to report that 4 years ago he introduced the "Zaohe" apricot variety from Julu County, and since last year he has seen defoliation during the growing season, and this year it is even more serious, with basically no fruit setting. He asked whether there is a good method to control early defoliation of apricot trees.
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