Eggplant is a popular vegetable, and it is a good crop with good yield. Whether it is planted in open field or planted in greenhouses, when using chemical pesticides, it is sensitive to some herbicides and insecticides, improper selection, or application in different sensitive growth periods of eggplant, all of which are likely to cause phytotoxicity, and some even destroy all fields. Species. Therefore, eggplant should pay special attention when selecting herbicides and insecticides.
Kill the king. This is because in the past few years, due to the fact that we did not consider which weeds were used in the past crops, and the killing kings that appeared after planting eggplants had an adverse impact on production, the authors had heard of the eggplant injury problems reflected by vegetable farmers during the investigation of some vegetable growing areas. . These vegetable growers planted eggplant during the growing season, and the hearts of the eggplant grew thicker, smaller, and rolled upwards. These symptoms occurred several times. Some large-scale eggplants were all unplugged and replaced with other crops. Through inquiry, the former site of eggplant was rice. In the control of rice weeds, a large number of killing herbicides were applied. They suspected that the herbicides were harmed. It was true that the symptoms found in eggplant were caused by the phytotoxicity caused by the king.
The killing cricket is an excellent herbicide that is used in many ways. It is also known as the scorpion, quinone, and quinclorac. It is mainly used for killing weeds and weeds in paddy fields, live fields, and transplanting fields. Special effects. However, due to the lack of a comprehensive understanding of the characteristics of the herbicide in some places, blind application and expansion of doses, resulting in crop injury, especially soil residues and quinclorac, can easily cause phytotoxicity on crops, if not pay attention It is easy to cause damage to production. Killer King is a hormonal herbicide that interferes with the growth and metabolism of living organisms by interfering with the activity of phytohormone-modulating enzymes, resulting in smaller, distorted, darker colors, lesser growth, and severe death. Therefore, the following crops are susceptible to phytotoxicity in the rice fields using the killing crickets: Solanaceous crops such as eggplant, potatoes, tobacco, peppers, tomatoes, etc.; Umbelliferae crops such as celery, carrots, parsley, fennel, etc.; Such as spinach, beet, etc.; malvae crops such as winter vegetables, okra, cotton, etc.; Convolvulaceae crops such as spinach, sweet potato and other crops. And it is required that within 10 months after the killing of the king, no crops can be planted except rice, and eggplant and tobacco cannot be planted within one year, and tomatoes, carrots, cucumbers, celery, parsley and other crops cannot be grown within 2 years. The cultivation of eggplant in paddy fields after the killing of kings is a typical manifestation of phytotoxicity.
Kill insects. There are many kinds of pests and diseases in vegetable crops. When selecting pesticides, the specificity of vegetable crops for insecticides should also be taken into account. For example, in the case of pests such as Liriomyza sativae and other insect pests, insecticidal or insecticidal pesticides are used. With other pesticides, some vegetables, such as eggplant spraying insecticide Dan pesticides, soon you can find the eggplant leaves yellow and other symptoms, the first symptoms of drug fight first, after the fight drugs appear symptoms, there is no fight drugs The symptoms of yellowing of the leaves do not appear, which fully shows that the eggplants are sensitive to the insecticidal sheet and will cause phytotoxicity after spraying. Currently on the market there are pesticides of the pesticide type, such as the fly-bills registered on the market. Only six amine and insecticidal compound products were used to control L. sativae. Among these products, "Tongqiao", which is 20% ciprofloxacin, insecticidal soluble powder, contains 15% of insecticide list, 9% of cyromazine, and registered products are used in cucumber fields, and the rest are registered for use. The bean field has not been registered on eggplant. At present, the insecticidal Dandan is mainly used for spray control of larvae of Lepidoptera pests, such as rice and sugarcane. In the production, it was found that the use of insecticidal oil on cotton, tobacco and certain leguminous crops is also prone to phytotoxicity. Solanaceae, Compositae and other crops are sensitive to insecticidal dan, and these crops cannot be used to control pests. Use insecticidal Dan.
S-metolachlor. At the vegetable production base, some use 100ml of Jingduer 960g/l s-metolachlor EC to seal the soil. After transplanting the eggplant, the leaves of the plant will not grow long after 20 days of application. The leaves will become thick and fragile. Other symptoms such as phytotoxicity, which is caused by improper use of serratia on the eggplant seedlings. S-metolachlor is an amide herbicide and is a selective preemergence soil-enclosed herbicide. It is mainly used in dryland crops such as soybeans, corn, cotton, peanuts, potatoes, and cabbage to control annual weeds. And some broad-leaved weeds. The drug is mainly absorbed by young shoots of plants, in which monocotyledonous weeds are mainly absorbed by the budding sheath, dicotyledonous weeds are absorbed by young shoots and larva roots, and conduct upwards, suppressing the growth of young shoots and roots, and sensitive weeds are excavated after germination Or poisoning died just after the soil was exposed. The leaves of broadleaf weeds that have been damaged by the crop are yellowing and the whole plant is dead. Sm-Molachlor can be used for the soil sealing treatment of eggplant transplanting fields, generally using 960 g/l of S-metolachlor EC 50 ml per acre. Excessive drug use or high drug concentration, as well as poor environmental conditions after medication, etc., are prone to injury. In the greenhouse eggplant after sudden exposure to high temperatures, soil transpiration intensified, the drug transpiration with steam to the greenhouse air, if not timely ventilation, will cause damage to the eggplant seedlings. Can not transplant tomato seedlings immediately after treatment, should be transplanted at intervals of 3-4 days, so as not to cause phytotoxicity. Symptoms of phytotoxicity include dwarfling and deformity of the seedlings, and the young shoots and young leaves cannot fully develop.
Before transplanting, eggplant is treated with azotoluene to seal the soil, and the amount of medication is too large. If the weather changes after the beginning of spring, when the temperature is high or low, it is easy to produce phytotoxicity to the eggplant seedlings. If the heart of the eggplant seedling does not die or be distorted, it can be restored after transplanting to other fields; if the heart and leaves of the eggplant seedlings are dead or distorted, it is less likely to be transplanted to other fields to resume growth, taking into account the movement of the eggplant seedlings. Shortly after planting, and due to poor growth of the phytotoxicity, even if it can resume growth after replanting, the recovery time will be longer. It is necessary to observe carefully and decide whether to replant or replant.
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