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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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Corn lodging causes huge losses, so how can it be effectively prevented and controlled?
Generally speaking, lodging can be divided into root lodging and stem lodging. The former is related to cultivation measures and the environment, while the latter is more related to variety-specific characteristics. But no matter which type of lodging occurs, it causes huge losses to crop yield...
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Can lodging corn be stood back up? An old farmer says it depends on the situation
Should lodged corn be stood back up? This depends on the growth stage of the corn. If lodging occurs at the seedling stage or before jointing, generally speaking, as long as the lodging is not especially severe, it does not need to be stood back up. However, if lodging occurs after jointing or at the late tasseling stage...
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How is the sowing time for summer corn determined? Mastering these methods is enough
How is the sowing time for summer corn determined? Please give guidance. Because the period available for corn growth in summer corn regions is limited, in order to obtain enough heat, allow the corn to fully mature, harvest it in time, obtain a relatively high yield, and not delay the normal sowing of the following wheat crop, the sowing time for summer-sown corn should be as early as possible. That is, winter wheat...
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Complete Guide to Summer Corn Pest and Disease Control
How do you control summer corn pests and diseases? Here is an introduction. During the summer sowing period and seedling stage, many types of pests, diseases and weeds occur, and the damage is severe. If control is poor, it very easily causes missing plants and broken rows, leading to reduced yield. Therefore, throughout the entire growth period of corn, carrying out comprehensive control of pests, diseases and weeds at the sowing and seedling stages is crucial. First...
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How can weeds be controlled effectively after sowing summer corn?
What is the best way to control weeds after sowing summer corn? Please give an introduction. Summer corn is generally sown in early June. During this period, temperatures are relatively high, and weeds grow quickly. Generally, 10 days after sowing, the peak of emergence is reached, and after 15 days, the number of emerged weeds can reach 90% of the total. Because corn plants are small during the seedling stage, they are vulnerable to weed damage. If not controlled in time, it can very easily...
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What are the precautions for sowing summer corn?
What should be noted when sowing summer corn? Please give some guidance. When sowing summer corn, note the following: 1. Delay sowing appropriately. The best sowing period for summer corn is from June 20 to 30, which avoids high temperatures during tasseling and helps achieve high yields. Corn should not be planted in successive cropping. After sowing, use one bottle of Yunongsi per mu, diluted in 100 jin of water, and spray to kill weeds. ...
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What should be noted when applying herbicides to summer corn?
What should be noted when applying herbicides to summer corn? Please explain. Under no-till direct seeding conditions, weed control in summer corn fields becomes more difficult. First, the shading of wheat straw and wheat stubble reduces the control effect of herbicides; second, weeds left over from the wheat field make the one-time "pre-emergence" effect unsatisfactory. In fields with wheat stubble...
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How to grow summer corn for high yields? Detailed explanation of key cultivation techniques
How can summer corn be grown for high yields? Please explain the planting method in detail. The summer corn planting method can refer to the following: 1. Select excellent varieties. Such as: Jifeng 58, Xingkang No. 2, Jidan 31. 2. Seed treatment. Sun the seeds to promote after-ripening and improve seed vigor; treat seeds with chemicals, using a 100-fold solution of 1605 or methamidophos fertilizer, cover the seeds for 2-3 hours, dry them and sow; treat seeds with micronutrient fertilizer, boron, zinc, molybdenum, 2-4 grams per kilogram.
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What are the methods for controlling pests and diseases in summer corn at the seedling stage
Which pests and diseases need to be controlled in summer corn at the seedling stage? Please introduce the control methods. The following pests and diseases need to be controlled in summer corn at the seedling stage: 1. Seedling-stage pest control. The main pests at the corn seedling stage are: armyworm, cotton bollworm, small brown planthopper, thrips, Swedish fly, etc. To control armyworm and cotton bollworm, 5% beta-cypermethrin or 2.5% cyhalothrin 50-75 g/mu can be used, sprayed with 30 kg of water. For the control of Swedish fly, when corn has just emerged (i.e. one leaf and one heart), spray 15% beta-cypermethrin·chlorpyrifos emulsifiable concentrate 50 mL per mu. If damaged plants appear in the field, those with severe damage should be pulled out promptly, and for lightly damaged ring-shaped plants, the tip of the plant should be cut off. To control the grain mealybug, use 50% phoxim emulsifiable concentrate 500-1000 mL/mu or 48% Lesiben emulsifiable concentrate 200-400 mL/mu for root drenching.
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