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Key points for the control of the yellow cutworm
1. Morphological characteristics Adult: body length 14~19 mm, wingspan 32~34 mm. Body yellowish brown or grayish brown. Forewings grayish yellow, the transverse lines on the wing surface are not obvious, but the kidney-shaped mark, ring-shaped mark and rod-shaped mark are clear. The center and outer margin of the wing are dark brown. Hindwings white, with the anterior margin slightly yellowish brown. Egg: hemispherical, about 0.5 mm in diameter. The eggshell surface has 16~20 longitudinal ridge lines. Larva: mature larva body length 33~43 mm. Yellowish brown, glossy. The body surface is much wrinkled, with inconspicuous granules. Anal
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How should cutworms be controlled in Angelica sinensis
Cutworms, also known as "ground silkworms" and "black ground silkworms." They belong to the order Lepidoptera, family Noctuidae. The cutworms affecting Angelica sinensis are mainly the black cutworm and the yellow cutworm, and their damage and control measures are the same. 1. Damage: The larvae damage Angelica sinensis seedlings, hiding by day and emerging at night; at the young instar stage they mostly damage tender leaves and tender growing tips, biting through the root crown and causing missing plants and broken rows. 2. Morphological characteristics: The adult black cutworm has a body length of 16-23 mm and a wingspan of 42-54 mm. The female moth's antennae are filiform, and the male moth's are bipectinate. The forewing is dark brown between the costal margin and the outer transverse line. Between the inner transverse line and the outer transverse line there are distinct kidney-shaped markings, ring-shaped markings and rod-shaped markings. The hindwing is grayish white, with the veins and margins dark brown. The abdomen is gray. The egg is hemispherical, initially milky white, later turning yellow, and grayish purple just before hatching. Mature larva: body length 37-47 mm. The head is yellowish brown, the body is yellowish brown to dark brown, with pale longitudinal bands on the back. The body surface is rough, covered with small round black granules. The anal plate is yellowish brown, with two dark brown longitudinal bands. Pupa: body length 18-24 mm. Reddish brown and glossy.
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Occurrence and Damage Characteristics of the Bridgeworm Pest on Lingzhi
The bridgeworm (Noctuidea) belongs to the family Geometridae. The lingzhi bridgeworm of this family (name to be determined) is an important pest damaging lingzhi. 1. Morphology and habits: The adult is 12 mm long with a wingspan of 25-28 mm, a small grayish-black moth. The antennae are filiform; the forewings are triangular with 8 black spots along the outer margin and one larger black spot in the middle of the costal margin; the hindwings are grayish-white. The egg is flat and round, 0.6-0.7 mm long and 0.4-0.5 mm wide, milky white initially and grayish-green before hatching. The mature larva is 22-25 mm long,
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How to effectively control the Schisandra leaf-rolling worm
It occurs from July to August. The larvae are initially white, later turning green. Young larvae bite and feed on the leaf mesophyll; after the 3rd instar they roll leaves and feed, affecting fruit development. Control methods: (1) Before the larvae roll the leaves, spray with 80% trichlorfon at 1000-1500 times dilution. (2) After the leaves are rolled, spray with 40% dimethoate emulsifiable concentrate at 1000-1500 times dilution. (3) Spray with 50% phoxim at 1500 times dilution. (4) Spray with 50% phosphamidon emulsifiable concentrate at 2000 times dilution. (5) Before and after the larvae roll the leaves, they can also be caught by hand.
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How should reishi mushroom bridge worms be prevented and controlled?
The reishi mushroom bridge worm (scientific name to be determined) belongs to the order Lepidoptera, family Geometridae. This pest damages reishi mushroom fruiting bodies. Young larvae feed on the surface and edges of the cap, causing pits and notches. After the 3rd instar, they can bore directly into the interior of the fruiting body and excrete large amounts of frass, which not only contaminates the mushroom bodies but also encourages the proliferation of weeds such as green mold, harming reishi mushroom growth and reducing yield and quality. (1) Morphological characteristics. Adult: body length 12 mm, wingspan 25-28 mm, body grayish black; antennae filiform, outer margin of forewing with 8 small black spots, a larger black spot in the middle of the costal margin,
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Damage Caused by Cutworms to Reishi Mushrooms and Its Control Methods
Cutworms belong to the order Lepidoptera, family Noctuidae. They are not only an important pest of agricultural and forestry crops, but also a common pest in the cultivation of edible fungi such as reishi mushroom, silver ear fungus, wood ear fungus, and oyster mushroom. They are widely distributed, but the degree of damage varies. They occur more frequently in outdoor open-field sunken-bed cultivation and plastic greenhouses. Damage characteristics: The larvae feed on the mycelium of reishi mushrooms, inhibiting mycelial growth and affecting fruiting body formation, which reduces reishi mushroom yield and lowers quality. Morphological characteristics: Adult body length 16-23 mm, wingspan 42-54 mm
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What are the control methods for pests and diseases of sweet wormwood?
Control methods for pests and diseases of sweet wormwood
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What are the propagation methods for sweet wormwood? Understanding sweet wormwood seedling cultivation in one article
Propagation methods for sweet wormwood
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How to grow sweet wormwood from seed? Detailed explanation of sowing methods and techniques
How to grow sweet wormwood from seed?
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