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What are the chemical weed control methods for summer corn?
How is chemical weed control used in summer corn planting? Please note that the following methods can be referenced for weed control in summer corn planting: 1. Target weeds. According to a survey by the county plant protection station, the main weeds occurring in summer corn fields in our county include: field bindweed, goosegrass, purple nutsedge, crabgrass, purslane, foxtail, creeping thistle, volunteer wheat, etc. ...
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What are the sowing methods and precautions for summer corn?
How is summer corn sown? What should be noted? Please guide: To do a good job of summer-sown corn, the following preparations should be made: 1. Seed treatment. Select excellent varieties: for dual-purpose grain and forage use, use Nongda 108, Nongda 86, Nongda 95, etc.; for grain corn, use Zhengdan 958, Jingzao 13, Jidan 26, etc.; for special silage corn, use Keduo 4, Keqing 1...
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What are the effective methods to promote early maturity of summer corn?
How do you promote early maturity of summer corn? Here are the methods. The following methods can be used to promote early maturity of summer corn: 1. Foliar fertilization. In the middle growth stage of corn, spray a mixture of 0.3% monopotassium phosphate plus zinc and boron micro-fertilizers to promote corn kernel formation, improve stress resistance, and advance maturity. 2. Timely control of pests and diseases. Reduce...
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Control Methods for Major Sesame Pests and Diseases
How should the major sesame pests and diseases be controlled? Please give guidance. The major sesame pests and diseases include the following: 1. Sesame hawk moth: before the larvae reach the 3rd instar, when there are an average of 2 larvae per 100 leaves on the plants, pesticide should be applied for control. Commonly used pesticides: 2.5% trichlorfon powder or 5% carbaryl powder sprayed at 1.5-2.5 kg per mu; 90% crystalline trichlorfon or 80%...
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Bitter Melon Continuous Cropping: Planting Methods and Key Technical Points
How to grow bitter melon in continuous cropping? Please provide guidance on the methods. First, pay attention to timely pest and disease control. In the middle and late stages, bitter melon's stress resistance decreases, and the likelihood of pest and disease infection increases, so prevention should be carried out early. At present, the main disease harming bitter melon is powdery mildew, which can be controlled by spraying 12.5% myclobutanil emulsifiable concentrate at 2000 times dilution or 12.5% tebuconazole...
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Planting Methods and Key Technical Points for Grafted Bitter Melon Seedlings
How do you plant grafted bitter melon seedlings? Here is a detailed introduction. Grafted bitter melon seedlings can be planted by referring to the following methods: 1. Choose suitable rootstock and scion varieties. Choose cucurbit varieties with good compatibility and strong stress resistance as rootstock. Currently, Yunnan black-seed pumpkin and local Mopan pumpkin are preferable; for scion varieties, generally choose local main cultivars...
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What are the control methods for sunflower brown spot?
How do you control sunflower brown spot? Please give guidance. Sunflower brown spot, also known as leaf blight, occurs widely across our country. In the early stage it can cause seedling death, and in the later stage it often causes premature leaf death, greatly affecting yield. In the early stage of seedling infection, nearly round lesions form on the cotyledons or young leaves, with a diameter of 2-6 mm...
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What are the control methods for sunflower sclerotinia rot?
How do you control sclerotinia rot in sunflowers? Please provide guidance on methods. Sclerotinia rot in sunflowers is caused by infection with Sclerotinia sclerotiorum. In addition to damaging sunflowers, it also damages economic crops such as soybean, rapeseed, sesame and tobacco. It can occur at all growth stages of sunflowers, with more cases occurring after flowering. It mainly damages the stems and flower heads, becoming...
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How is corn bred? Understanding corn breeding methods in one article
How is corn bred? Please explain corn's natural cross-pollination habit and the heterozygosity of its genetic basis, as well as the breeding procedure that exploits the heterosis of F1 generations between inbred lines arising from this, which together form the particularity of corn breeding. With almost no exception, every successful corn breeder and research institute starts from...
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Summer Corn Ear Stage Management Methods and Technical Key Points
How should summer corn be managed during the ear stage? Please explain the methods. Summer corn ear stage management can refer to the following methods: 1. Remove weak plants and cultivate to promote roots. For those small plants, weak plants and ineffective plants, they should be removed early. During the ear stage, generally cultivate 1-2 times. After the small trumpet stage, cultivation should be shallow, to protect roots and conserve soil moisture; ...
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