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What are the prevention measures for rose black spot disease? Explained clearly in one article
Rose black spot disease is a stubborn disease that harms roses, mainly occurring on leaves, young shoots and flower stalks. The lesions mostly occur on the upper surface of the leaves. On severely affected plants, all the leaves from the lower to the middle part fall off, making the plants grow weakly and susceptible to low-temperature damage to flower buds, affecting flowering the following year, and even causing branches to die. The author...
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What are the common pests of open-ground roses? Understand them in one article
Roses are flowers prone to many pests. Before carrying out control, you must first understand the symptoms of the pest damage and identify which pest it is; second, you need to understand the timing and patterns of the pest's occurrence so as to treat the right cause. Here we introduce the 4 most common pests. Aphids Aphids gather on the buds, tender leaves, and flower buds of roses to suck...
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Do sweet potatoes need vine turning? Read this article and you will understand
Do sweet potatoes need vine turning? Please share this with readers: experiments have proven that when sweet potatoes (also called shan yu or di gua) are not vine-turned during the growing period, they can increase yield by about 25% compared with plots where vines are turned, and some even reach as high as 30%. The main reason vine turning reduces sweet potato yield is: damage to vines and leaves. Practice has proven that each time vines are turned, 66...
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How to select seed ginger for planting? This article teaches you to pick good ginger seeds
How should seed ginger be selected for planting? Please give guidance. Ginger cultivation is simple and highly profitable. Generally speaking, for every 100 kg of seed ginger planted, with good management, 350-400 kg of fresh ginger can be harvested, and the yield can reach around 500 kg at best. The key points of its cultivation techniques are briefly introduced as follows: 1. Seed selection. In late February or early March...
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What is longan crown gall disease? Understanding this disease in one article
What is longan crown gall disease? How should it be prevented and controlled? Longan crown gall disease is a newly discovered disease on longan trees. When branches and trunks are affected, it causes premature tree decline. 1. Symptoms: In the early stage of infection, small protrusions appear on the affected branches and trunks, which gradually enlarge to form tumors with a rough or uneven surface and a suberized texture....
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What is cotton Fusarium wilt? A detailed guide in one article
What is cotton Fusarium wilt? What forms does it take? Cotton Fusarium wilt mainly has the following types: (1) Yellow net-vein type. The leaf veins first lose their green color and turn yellow, while the leaf mesophyll remains green, forming a yellow net pattern. (2) Yellowing type. The leaf veins remain green while the mesophyll turns yellow, or both the veins and mesophyll turn yellow. The chlorotic leaves develop from...
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What does continuous and alternating soybean cropping mean? Read this article and you will understand
How should soybean leaf spot disease be prevented and controlled? What are the causes of the disease? 1. Distribution Soybean leaf spot disease occurs in Sichuan, Henan, Shandong, Jiangsu and other places in China, and occurs more often in autumn soybeans. 2. Symptoms The lesions on the leaves are light brown to grayish white, irregular, with dark brown edges. In the later stage, the lesions develop...
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What are the morphological characteristics of eucalyptus? Understanding the appearance of eucalyptus in one article
Evergreen plants, with periodic shedding of old leaves within a year. Most species are tall trees, a few are small trees, and very few are shrub-like. Crown shapes include spire-shaped, multi-branched, and weeping forms. Simple leaves, entire margins, leathery, sometimes covered with a thin layer of wax. Leaves can be divided into juvenile leaves, intermediate leaves, and mature leaves...
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What pests and diseases affect Welsh onions? Common types explained in one article
What pests and diseases affect Welsh onions? How should they be controlled? Please explain. The control of Welsh onion pests and diseases should be based on prevention, implementing a 2-3 year rotation with crops other than Allium species; cleaning the field to eliminate sources of pests and diseases; selecting disease-resistant varieties; disinfecting seeds, that is, before sowing soak the seeds in 50°C warm water for 25 minutes while stirring constantly, then soak...
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What is formula fertilization for yardlong beans? Read this one article to understand
What is formula fertilization for yardlong beans? Please introduce the formula fertilization method for yardlong beans: 1 Nutrient requirements: producing 1000 kg of yardlong beans requires 10.2 kg of pure nitrogen, 4.4 kg of phosphorus pentoxide, and 9.7 kg of potassium oxide. 2 Key fertilization points for a yield of 2000 kg per mu: 2.1 Base fertilizer. Before planting, apply 3000 kg of organic fertilizer per mu, 4...
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