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How to Grow Cotton to Prevent Square and Boll Shedding
(1) General patterns of square and boll shedding. ① Ratio of square and boll shedding: In square and boll shedding, the overall trend in the ratio of square shedding to boll shedding is that the boll shedding rate is higher than the square shedding rate, with a ratio of about 3:2. ② Age of squares and bolls at shedding: After squaring, shedding is greatest at 11-20 days, while shedding of large squares over 20 days old is less. Young bolls 3-8 days after flowering are most prone to shedding, with 3-5 days being the most common, while young bolls over 10 days old rarely shed.
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How can the boll-setting rate be increased in cotton cultivation?
Types of square and boll shedding in cotton include physiological shedding, shedding caused by pests and diseases, and shedding caused by mechanical damage. As for the causes of physiological shedding: first, excessive application of fertilizer and water causes excessive vegetative growth, with nutrients consumed too heavily in the early stage and supply falling short of demand in the later stage; second, excessive planting density in the cotton field causes severe shading by branches and leaves, reducing light, weakening photosynthesis, and decreasing the nutrients produced; third, some cotton fields are deficient in boron, causing cotton to flower but not set fruit; fourth, high temperature and drought, insufficient fertilizer and water, or excessively high temperatures cause cotton pollen sterility; fifth, frequent rainy weather leads to poor pollination. As for pest and disease damage, inadequate control of cotton mirids, cotton bollworms, Fusarium wilt and Verticillium wilt can easily lead to massive square and boll shedding. As for mechanical damage, it is mainly caused by improper operation during field management. In addition, in the past two years, blind application of herbicides has occasionally caused square and boll shedding.
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A Detailed Guide to Flower Shiitake Mushroom Cultivation Time and Yield per Square Meter
Abstract The cultivation time for the Flower Shiitake 939 variety is about 90 days, and the cultivation time for the Flower Shiitake 135 variety is about 200 days. The cultivation time of flower shiitake mushrooms varies by region, as it is affected by various factors such as local climate conditions, temperature, humidity, etc. The cultivation of flower shiitake mushrooms
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Detailed Guide to High-Yield Cultivation Techniques for Wine Cap Mushroom and Yield per Square Meter
Summary Season: generally two crops can be cultivated per year, usually one crop each in September to December and December to May. Site: requires an adequate water source and fertile land, avoid sunlight exposure, and do not choose ground that is too low or prone to waterlogging. Disinfection: the site needs to be
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Saving Silence 02: Guarding One Square Inch of Silence at Weiwuying, Listening to Kaohsiung's Quiet Movement
Saving Silence 02: Guarding one square inch of silence, listening to Kaohsiung's quiet movement at Weiwuying
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Bee Die-off 0827"Not just bees, even ants are out of balance! Improper pesticide spraying in betel nut orchards has led to rampant ghost ants. When will the government face this squarely?
Bee Die-off 0827"Not just bees, even ants are out of balance! Improper pesticide spraying in betel nut orchards has led to rampant ghost ants. When will the government face this squarely?
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The Beauty of Bonsai Art: The Spirit of Nature Revealed Within a Square Inch
China is a kingdom of poetry in the world. Poets and literati through the ages held a special affection for flowers, grasses and trees, and with condensed language and vivid wording they vividly captured the spiritual character and charm of landscapes, flowers and trees; quite a few of them also sang the praises of bonsai art. Misty emerald of autumn's three months, waves bearing traces of ages past. Carved into a piece of clear jade, cut off from the roots of the blue clouds
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When to plant authentic heat-clearing dandelion seeds, plus yield per square meter and plant height
Dandelion, also known as Hua Hualang, Pu Gong Cao, edible dandelion, bed-wetting grass, Western dandelion, and mother-in-law's herb, is a common heat-clearing plant found on hillsides, grasslands, wild mountains, and wasteland. Because it is increasingly recognized by more people, the demand for it in cooking and medicine is very high.
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How much does grey fir wall cladding cost per square meter? With pictures of grey-leaf Chinese fir trees
Grey-leaf Chinese fir, called grey fir, also has other aliases such as kangsan, mangshan, and paoshan. It is a type of Chinese fir plant. Its distinguishing feature is its leaves, which are grey-green, sometimes blue-green, and have a noticeable white powder. This is a very obvious characteristic that distinguishes it from other Chinese firs.
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What Is a Cotton Square? Management Techniques During the Squaring Stage, Causes of Square and Boll Shedding, and Common Diseases
Key Field Management Points for the Cotton Squaring Stage
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