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What are the main pests and diseases of lychee in March?
1. Downy blight: also called downy mildew blight. It mainly damages the fruit, and also infects flower clusters and young leaves. When the fruit is affected, the disease usually starts at the fruit stem, with irregular lesions appearing on the fruit skin surface that gradually spread, eventually turning the entire fruit black, rotting the flesh, producing a sour, fermented, wine-like smell, and with a white frost-like substance on the outside of the diseased fruit, causing fruit drop....
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How is integrated control of lotus root diseases carried out?
I. Lotus root brown spot disease A common disease of lotus leaves, producing light brown lesions on the leaves, causing localized drying of the affected leaves. Control: Reasonable close planting to ensure ventilation and light penetration in the lotus field; appropriately increase the application of phosphorus and potassium fertilizers to improve plant resistance, and promptly remove diseased plant residues. At the early stage of the disease, use 25% carbendazim 600x solution, or 75% chlorothalonil...
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Six Common Lotus Root Diseases and Their Control Methods
I. Main Disease Types June and July are the peak growing period for lotus roots and also the peak period for various diseases, so doing a good job of disease control is key. As an instructor in the agricultural science and technology system, I propose lotus root disease control techniques to guide demonstrators and lotus root farmers in production. 1. Lotus root rot, also known as black root disease, lotus root...
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Detailed Guide to Identifying and Controlling Common Hawthorn Diseases
Common Hawthorn Diseases and Their Control
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How to prevent diseases in yam during the hot and rainy period?
I. Planting and growth period: generally planted in February-March, and harvesting begins in September-December. II. Main cultivation techniques 1. Soil selection: sandy loam soil that is loose and deep, with a water source for irrigation, should be selected. 2. Preparation and treatment of seedlings (1) Planting with yam cuttings: at present, ...
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Control Methods for Three Major Soybean Diseases
What does soybean dodder look like? What should you do if soybean dodder appears? Dodder, also called yellow silk vine or tangled silk vine, is a malignant weed. It harms many crops, can cause total loss of soybean yield, and occurs commonly in various regions. (1) Morphology: The stem of soybean dodder is yellow, orange-yellow, or yellow-green, smooth and hairless,...
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How to prevent and control pests and diseases in early spring eggplant? Key technical points to master
For eggplant seedlings raised in early spring, the main focus is preventing and controlling soil-borne diseases: damping-off, rhizoctonia rot and sclerotinia rot. For seedbed soil disinfection, mix 50 kg of seedbed soil with 20 g of 68% Jinlei water-dispersible granules and 10 ml of 2.5% Shileshi suspension concentrate, sift the soil and mix well, then fill nutrient pots, or spread it over the seedling bed. During the seedling stage, spray 0.1%-0.2% monopotassium phosphate...
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What are the control methods for peanut viral diseases?
Peanut disease is one of the major diseases of peanut, seriously affecting the yield and quality of peanut, and it is especially severe in the production areas of northern China. For peanut viral diseases, except for bud blight, which is mainly transmitted by thrips, other diseases such as mild mottle disease, yellow mosaic disease, and common mosaic disease are transmitted through seeds and aphids, and seed-borne infected tubers...
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How to prevent pests and diseases in water spinach? Practical control measures shared
1. Preparing seedlings: After the mother stems of the planted water spinach form nodes, when the branches growing from the nodes reach 20 cm in length, cut off the seedlings with fibrous roots to use as planting material. 2. Cultivation method: Prepare braided straw ropes, wooden stakes and floats (the plastic foam ball-shaped floats used for the upper rope of fishing nets will do). When planting, place the seedlings at 15-20 cm...
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How to prevent and control persimmon tree diseases? These two methods are very practical
The main pests and diseases that persimmon trees are prone to include: persimmon angular leaf spot, circular leaf spot, anthracnose, black spot, leaf blight, powdery mildew, Eumeta variegata, Japanese mealybug, tea tussock moth, Maladera ovata, red wax scale, Homona magnanima, and small black slug moth, etc. Control methods: (1) Remove diseased fallen leaves and burn them; at the early stage of the disease, spray Bordeaux mixture, zineb, carbendazim or any one of these fungicides several times; when powdery mildew is severe, spray triadimefon. (2) Use light traps to kill adult insects; during the larval or nymph stage, spray dichlorvos, trichlorfon, fenitrothion or any one of these insecticides.
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