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What are the control methods for rose black spot disease?
Black spot disease mostly occurs in the hot and humid rainy season. Purple-brown round lesions appear on the upper surface of the leaves, with slightly ciliate edges, and many small black dots grow in the center. These small black dots are the acervuli of the pathogen. After the small black dots crack open, spores are released, causing the disease to spread, and it can also spread with rainwater. Black spot disease relies on con...
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How to prevent fruit cracking in Feizixiao lychee? A detailed guide to practical control methods
How to prevent fruit cracking in Feizixiao lychee? Which methods work well? To prevent fruit cracking in Feizixiao lychee, you can refer to the following methods for control: 1. Root cutting and girdling: In the later stage of fruit development, using root cutting and girdling of the main branches to weaken root activity is very effective at reducing fruit cracking. But the measures must be timely and appropriate; if excessive...
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How can potato late blight be controlled effectively?
How can potato late blight be controlled effectively? Please provide guidance. Effective control of potato late blight can be carried out in the following ways: 1. Agricultural control: ① Select disease-resistant varieties, plant at a reasonable density, use balanced fertilization, increase potassium fertilizer, and enhance plant resistance. ② Strictly select disease-free seed potatoes to eliminate sources of disease infection. ③ High...
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How to Treat Potato Early Blight? A Detailed Guide to Prevention and Control Methods
How to treat potato early blight? Please explain the methods. Early blight control is mainly based on chemical fungicides, with protective fungicides applied as sprays. Before the disease appears, 75% mancozeb water-dispersible granules can be used at 180-200 grams per mu, sprayed once every 7-10 days for 3-4 consecutive applications. Antaisheng (propineb) and similar fungicides can also be used...
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What are the methods for controlling underground pests in sweet corn?
How to control underground pests in sweet corn? Please advise. The underground pests damaging sweet corn mainly include mole crickets, white grubs, wireworms and cutworms. These pests damage sweet corn in their larval stage, mainly during the seedling stage of sweet corn, causing dead seedlings and missing plants. To ensure full and strong seedlings, integrated control should be carried out....
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How to control scale insects on plum trees? Practical methods here
How to control scale insects on plum trees? Please introduce methods. Plum tree scale insect control methods: 1. Do a good job of winter pruning and orchard cleaning to reduce the population density the following year, and spray 5-degree lime sulfur mixture before bud break. 2. Trunk smearing method for control: ① Apply a 5-fold dilution of commercially available laundry detergent evenly to the infested trunk. ② Mix 5 parts commercially available kerosene, 1 part laundry detergent, and 6 parts water, and apply evenly to the infested trunk...
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What are the key months for pest and disease control on plum trees?
Which pests and diseases should be controlled on plum trees in which months? Here is an introduction. For pest and disease control when growing plum trees, you can refer to the following: ① The main insect pests of Brown plum are aphids (mid-March to mid-April), scarab beetles (April to August), fruit borers (May to August), peach fruit moths (late May to mid-July), and fruit-piercing noctuid moths (before harvest). You can use Decis at 2000 times dilution, isocarbophos at 1000-2000 times dilution, and sumithion at 1000 times dilution for spraying, and use sugar-vinegar liquid for trapping and killing.
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A Detailed Guide to Common Pests and Diseases of Rose and Their Control Methods
The rose has a beautiful appearance, comes in a thousand forms, is richly fragrant, and blooms in all four seasons. In particular, it has a great many varieties and is easy to propagate and cultivate. It is praised by people as the "Queen of Flowers" and is one of the ten most famous flowers of our country. However, rose pests and diseases often cause poor growth and even death, seriously affecting its ornamental value.
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How to Prevent and Control Zucchini Flower Rot? A Full Breakdown of Practical Methods
How to prevent and control zucchini flower rot? What methods can effectively prevent and control it? Zucchini flower rot can be prevented and controlled using the following methods: Environmental regulation: First, reduce humidity. Zucchini flower rot occurs easily in low-temperature, humid greenhouse environments, so environmental regulation should focus mainly on heat preservation and humidity reduction. Since the fruiting period of zucchini...
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Prevention and Control Methods and Technical Key Points for Flower and Fruit Drop in Zucchini
How to prevent and control flower and fruit drop in zucchini? Please advise on methods. Flower and fruit drop in zucchini can be prevented and controlled by referring to the following methods: Strictly control temperature. During the flowering and fruiting period of zucchini, keep the temperature inside the greenhouse at around 26°C during the day and no lower than 15°C at night. Remove and cover the straw curtains in a timely manner. Remove and cover the straw curtains in a timely manner to extend...
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