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How many generations of the boring pest cotton bollworm occur in a year, and how should insecticides be used for its control?
The cotton bollworm, of the order Lepidoptera and family Noctuidae, is widely distributed in China and around the world, and occurs in both cotton-growing and vegetable-growing regions of China. The cotton bollworm is an important boring pest during the cotton bud and boll stage, mainly boring into and feeding on buds, flowers and bolls, and also feeding on tender leaves. So how many generations of the cotton bollworm occur
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What pesticide gives good control results when stem-boring worms occur
Plant pests are a problem often encountered during the planting process. When the pest infestation is severe, it can cause serious damage to plants, and even result in total crop failure in the end. So what are stem-boring worms? When plants suffer from a stem-boring worm infestation, what pesticide is good for treatment? 1
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Control methods for stem-boring pests damaging cherry blossoms
The stem-boring pests that damage cherry blossoms include longhorn beetles and the coffee wood moth (Zeuzera coffeeae). Their control methods are: 1. Longhorn beetles. The longhorn beetles that damage cherry blossoms usually include the citrus longhorn beetle (Anoplophora chinensis), the glossy green longhorn beetle (Anoplophora glabripennis), and the peach red-necked longhorn beetle (Aromia bungii). ① Citrus longhorn beetle. One generation occurs per year. When adults emerge from late May to early June, capture the adults: before laying eggs, the citrus longhorn beetle adult first bites a notch about 2 mm deep and about 8 mm long in the bark in the shape of the Chinese character "eight" or "ding", then lays eggs inside it. During the peak egg-laying period in mid-to-late July, search for the notches on the trunk and crush the eggs.
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What are the control methods for trunk-boring pests of cherry blossoms?
The longhorn beetles that harm cherry blossoms usually include the star longhorn beetle, the glossy-shouldered star longhorn beetle, and the peach red-necked longhorn beetle. 1. The star longhorn beetle has 1 generation per year. When adults emerge from late May to early June, capture the adults: before the star longhorn beetle adult lays eggs, it first bites a notch about 2 mm deep and about 8 mm long in the bark in the shape of a "" or "", and then lays eggs inside it. During the peak egg-laying period in mid-to-late July, search for the notches on the trunk and destroy the eggs. During the stage when newly hatched larvae are active in the cortex, use a grafting knife to pick the larvae out. For larvae that have bored into the xylem, it is necessary to
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Common Wood-Boring Pests of Landscape Plants and Integrated Control Methods
Landscape plants are easily harmed by wood-boring pests in daily life. These pests live hidden, cause serious damage and are difficult to control, which brings certain difficulties to landscape plant protection. Below, the editor will introduce the common wood-boring pests and control methods
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How to control litchi fruit-boring pests? These methods are very effective
Litchi fruit-boring pests include the litchi tortricid (Cryptophlebia ombrodelta), the litchi small grey moth, the Yaowen moth and the litchi stem-end borer, among others. Damage begins each year when litchi trees start to flower, and is most severe from late April to early June. The larvae first bite through the skin of the young fruit, then bore into the fruit and feed on the stone, causing heavy fruit drop, reducing yield and lowering fruit quality, with...
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