Bean pods (Maruba testulalis Geyer) Alias ​​bean pods, legume pods pods, bean pods pods, bean pods, bean pods, cardamom moths, bean leaf mites, soybean leaf mites, soy bean moths, lepidoptera Moth family. Harmful soybeans (Edamame), kidney beans, kidney beans, lentils, green beans, peas, broad beans, etc.
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What are the characteristics of the damage? The larvae damage the bean leaf flowers and bean pods, which often damages the leaves of the bean pods or enters the young seeds of the larvae, and deposits the fecal particles inside the pods and outside the pod boreholes. The affected pods are bitter and unbearable. In severely affected areas, the rate of defamation exceeded 70%.
Morphological characteristics: The adult body is approximately 13mm in length, with two white transparent patches in the center of the forewings; the hind wings are white and translucent, and the inside has dark brown wavy patterns.
Egg 0.60.4 (mm), flat, oval, light green, hexagonal reticular surface.
The last-instar larvae are about 18 mm in length, yellow-green in color, and brown in the head and in the pronotum. On the middle and back thoracodorsal plates, there are six dark brown hairs, four in the forefront, each with two bristles and two bristles at the rear; the back of the abdomen has six hairs of the same hair, but each has only one bristles.
It is 13mm long and yellow-brown. The top of the head is prominent, compound eye is red-brown. Before the feathering, transparent spots of the adults' forewings can be seen on the brown wing buds.
Living habits: 3-4 generations in North China, 4-5 generations in Central China, 7 generations in South China, wintering in earth with earthworms, larval period from June to October each year, adult phototaxis, and egg dispersion Produced on tender clips, buds and also stalks, egg period is 2-3 days, a total of five instar larvae, newly hatched larvae into the tender larvae or flower buds feeding, resulting in loss of buds; 3 after infuse into the internal food The size of the bean pods is 2-3 heads per larvae. The larvae are often rotted after the rain. The larvae are often harmed by the leaves of Zizi and Zizania. The larvae are 8-10 days old. The old larvae lick on both sides of the main lobe of the leaves. The phlegm can also be used to delineate the fallen soil surface and defoliation. The pupa period is 4-10 days. The soybean pod has a wide range of temperature adaptation and can develop at 7-31°C, but the most suitable temperature is 28 °C, relative humidity 80%-85%.
Control methods
1. Clean up the falling flowers and falling leaves in time, and remove the wounded leaves and pods to reduce the source of insects.
2, drug control? Drug control must be in the larvae after hatching buds and tender before application. Let the liquid contact the worm and kill the pest. Targeted. Select one of the following highly effective, low-toxic, low-residue sprays and sprays: 90% trichlorfon 1000 times, 20% triazophos 700 times or timely, 2.5% deltamethrin 3000 times Liquid, 10% cypermethrin 1000 times, 10% imidacloprid WP 1000-1500 times; starting from the bud, spraying buds once every 10 days, can control the damage If you need to cure other pests, you should spray .
What are the characteristics of the damage? The larvae damage the bean leaf flowers and bean pods, which often damages the leaves of the bean pods or enters the young seeds of the larvae, and deposits the fecal particles inside the pods and outside the pod boreholes. The affected pods are bitter and unbearable. In severely affected areas, the rate of defamation exceeded 70%.
Morphological characteristics: The adult body is approximately 13mm in length, with two white transparent patches in the center of the forewings; the hind wings are white and translucent, and the inside has dark brown wavy patterns.
Egg 0.60.4 (mm), flat, oval, light green, hexagonal reticular surface.
The last-instar larvae are about 18 mm in length, yellow-green in color, and brown in the head and in the pronotum. On the middle and back thoracodorsal plates, there are six dark brown hairs, four in the forefront, each with two bristles and two bristles at the rear; the back of the abdomen has six hairs of the same hair, but each has only one bristles.
It is 13mm long and yellow-brown. The top of the head is prominent, compound eye is red-brown. Before the feathering, transparent spots of the adults' forewings can be seen on the brown wing buds.
Living habits: 3-4 generations in North China, 4-5 generations in Central China, 7 generations in South China, wintering in earth with earthworms, larval period from June to October each year, adult phototaxis, and egg dispersion Produced on tender clips, buds and also stalks, egg period is 2-3 days, a total of five instar larvae, newly hatched larvae into the tender larvae or flower buds feeding, resulting in loss of buds; 3 after infuse into the internal food The size of the bean pods is 2-3 heads per larvae. The larvae are often rotted after the rain. The larvae are often harmed by the leaves of Zizi and Zizania. The larvae are 8-10 days old. The old larvae lick on both sides of the main lobe of the leaves. The phlegm can also be used to delineate the fallen soil surface and defoliation. The pupa period is 4-10 days. The soybean pod has a wide range of temperature adaptation and can develop at 7-31°C, but the most suitable temperature is 28 °C, relative humidity 80%-85%.
Control methods
1. Clean up the falling flowers and falling leaves in time, and remove the wounded leaves and pods to reduce the source of insects.
2, drug control? Drug control must be in the larvae after hatching buds and tender before application. Let the liquid contact the worm and kill the pest. Targeted. Select one of the following highly effective, low-toxic, low-residue sprays and sprays: 90% trichlorfon 1000 times, 20% triazophos 700 times or timely, 2.5% deltamethrin 3000 times Liquid, 10% cypermethrin 1000 times, 10% imidacloprid WP 1000-1500 times; starting from the bud, spraying buds once every 10 days, can control the damage If you need to cure other pests, you should spray .
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