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What are the control methods for black spot disease in roses?
How to control black spot disease in roses? Please help guide. Black spot disease is most prevalent in Beijing in summer and autumn. On the leaves of diseased rose plants, dark brown spots 3-4 mm in diameter appear, surrounded by yellow halos, and the leaves fall off. When the disease is severe, only the branches and infected young buds remain on the rose plant. 2. Early prevention...
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How to plant Chinese roses (Rosa chinensis) so they grow well? A detailed guide to planting methods
How should Chinese roses be planted properly? Here is a detailed guide. You can refer to the following planting methods for Chinese roses: For graft propagation, use wild rose or a dedicated rootstock variety as the rootstock, and graft by either cleft grafting or bud grafting. Sow the rootstock in early April of the previous year and transplant it in April of the second year. The seedbed should be fertile, loose sandy soil...
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What are the application methods for plant growth regulators?
What application methods are there for plant growth regulators? Please give an introduction. Plant growth regulators are a class of substances with physiological and biological effects similar to those of plant hormones. Substances currently widely used in agricultural production for plant growth and development functions include auxins, gibberellins, ethylene, cytokinins, abscisic acid...
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What are the cultivation techniques for oyster mushrooms? A detailed guide to growing methods
What are the cultivation techniques for oyster mushrooms? Please introduce them. The oyster mushroom is the most widely cultivated, highest-yielding edible fungus in China, and the one most consumed and exported. Its scientific name is Pleurotus ostreatus (Jacq. ex Fr.), belonging to the subdivision Basidiomycotina, class Hymenomycetes, order Agaricales, family Pleurotaceae, genus Pleurotus. Its other names include...
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What are the control methods for cotton mirid bugs?
How do you control mirid bugs when growing cotton? Please explain the methods. Cotton mirid bugs can cause damage during both the seedling stage and the bud and boll stage of cotton. Right now, during the vigorous reproductive growth period of squaring, flowering and boll setting, is also the main damage period of mirid bugs, and they can cause cotton squares and bolls to drop. However, current genetically modified insect-resistant cotton has no resistance to piercing-sucking pests such as mirid bugs...
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What are the methods to control excessive growth of cotton in summer?
How do you control excessive growth of cotton in summer? Here are some methods to introduce. To control excessive growth of cotton in summer, you can refer to the following methods: timely chemical regulation by spraying mepiquat chloride or chlormequat, which can control cotton plant growth, improve plant shape, and produce more buds and bolls. At the initial flowering stage, use 6-8 ml of chlormequat or 1.5-2 g of mepiquat chloride per mu, add water to 25...
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What are the methods for preventing and treating rose rot?
How do you bud-graft roses? An introduction to the bud-grafting method for roses can refer to the following: 1. Variety selection: choose traditional superior varieties, such as Gansu "Kushui Rose", Shandong "Pingyin Rose", Beijing "Miaofengshan Rose", etc. (traditional roses bloom once in late spring and early summer), or choose recent...
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What are the control methods for the white peach scale (Pseudaulacaspis pentagona) on cherry blossoms?
How do you control the white peach scale on cherry blossoms? Please explain the methods. The white peach scale on cherry blossoms is mainly found in cherry cultivation areas and occurs commonly. Due to the currently suitable climate and high field humidity, it has become quite severe in some fields. The damage has already caused leaves to basically fall off, and the pest population is extremely dense, appearing pure white from near or far. It is estimated...
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What are the control methods for cherry blossom crown gall disease?
How do you control cherry blossom crown gall disease? Here are the methods. The gorgeous cherry blossom is deeply loved by people, but it is easily infected by a fatal crown gall disease. This disease mainly occurs on the roots and on the trunk and lateral branches of the aboveground part of the cherry blossom. In the early stage of the disease, the root crown swells into spherical or hemispherical tumor-like growths; young galls are white, with a soft texture...
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What are the propagation methods for cherry blossoms? A detailed explanation of several common methods
What propagation methods are there for cherry blossoms? Please explain that cherry blossoms are mainly propagated by grafting, though sowing and cuttings are also possible. For grafting, cherry or wild cherry seedlings are generally used as rootstock, with excellent cherry blossom varieties used as scions. Cleft grafting is mainly used, while budding is rarely adopted. Cleft grafting is carried out in March. Select robust 1-year-old cherry blossom branches...
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