There are many kinds of pests in the garden plants, including dried moths, moth stems, new shoots of moths, as well as various pests such as borer buds, flowers and fruits, and seeds. Such as Coleoptera, Giddings, and Small Beetles; Lepidoptera wood beetle moths, transfiguration moths, weavers, curl moths, borer moths, nocturnal moths; Hymenoptera stem bees, tree bees, etc. They will cause different degrees of harm to street trees, garden trees and a variety of flowers and shrubs, and when they occur seriously, they will cause the death of flowers and trees in pieces, reduce the ornamental value, and bring huge losses to landscaping.
First, Tianniu
External symptoms
The larvae feed on the phloem and xylem, often in the dry trees in the ring of moth phloem and form a circular transverse fissure circle in appearance, the remaining wood chips of the mothia are filamentous discharge outside the moth, some wood chips are more than 1-2 cm long, and the long wood chips are scattered at the mouth of the moth and the ground tree pocket. Filamentous wood chips can also be found on the trunk (especially in the early stages of harm should be carefully examined), and the egg laying groove can be seen early in the victim area, and the worm eggs or egg shell can sometimes be found in the groove, and the adult worm feathers can be seen to the round feather hole.
Internal symptoms
The worm path is often flattened, and multiple worm lanes can be connected to each other in a victim site, and multiple larvae can be dissected. The worm path is about 10-40 cm long, and there are filamentous wood chips in the moth channel.
Egg and pupa identification
The larvae are yellowish or white , the anterior end of the body is rounded , head-like , the palate is well developed , there are no gastropods , and the body is hairless ( thus distinguishing moth larvae ) . Adult antennae are longer, often longer than the length of the body, and in general males have longer antennae than females.
Star Cow
Adults occur from May to July and live in flat to mid-elevation mountainous areas. Adults occasionally have phototropism at night; larvae harm plants such as citrus and willow trees. The larvae generally eat the trunk of larger plants, causing the plant to decline and causing death. Adults bite the cortex of young branches, forming dead shoots and also eat leaves in a absent shape.
Palm cedar tianniu
Adults overwinter, and adults emerge from late March to early April, and are still active in early May. It is mainly harmful to fir and willow fir. The larvae drill the phloem and xylem of the weak young trees and thick branches of adult trees in 3-6 years, cutting off the transport of nutrients and water, affecting growth at light and drying up and dying.
Bare-shouldered star Celestial Bull
Adults are active from May to October and overwinter in November. The main hazards are plane trees, willows and poplars. Larvae eat tree trunks, reduce the quality of wood with little harm, and seriously cause trees to dry up and wind break; Adults bite leaves or small branches and xylem.
Mulberry cow
The main hazard period is from June to October. Feeding during the day and laying eggs at night. It is widely distributed, and adults eat young branches and leaves; larvae feed under the skin and xylem of the branches, moth downward, weakening the tree, and dying of heavy ones. Adults are unresponsive and easy to catch. It prefers the tender bark of trees, figs, apples, etc.
Second, the gidding worm
Hazard characteristics: Adult insects bite young leaves into a lack of moments, but mainly larvae in the branch cortex moth, the affected cortex has a prominent crack, out of the oil dot brown gum, for serious harm, the bark bursts, the main branch or the whole plant dies.
Third, the weevil, commonly known as the weevil
Hazard characteristics: adult and larval are plant-feeding. Most species moth into plant tissues and are seriously harmful. The larvae are mostly obese, footless and feed only on a portion of the plant – flower heads, seeds, fleshy fruits, stems or roots. Many larvae eat only one plant or a close relative, and adults feed on a wider range. Weevils mainly harm flower and fruit trees.
4. Wood beetle moth
Hazard characteristics: the larvae burrow into the phloem and xylem of the trunk, the worm hole is round, excreting granular or spherical feces, scattered on the ground around the root, and the moth mouth often has brown stream glue.
Wood beetle moths often spit silk to glue insect droppings and wood chips, and connect them into a curved channel on the trunk, and the larvae hide in the trunk during the day and crawl out of the channel at night to feed on the phloem. The victim eucalyptus tree is prone to dry shoots or wind folds, the wind break section is neat, and there is no insect dung wood chip package at the broken part.
5. Borer moths
Life habits: mature and pupating larvae are found in the stems of host plants in spring and turn into pale yellowish-brown moths in summer; The eggs are laid on the back of the leaves and hatch in about a week; Early larvae feed on the outside of the host and later burrow into leaves, stems, and panicles.
6. Roll moths
Life habits: When the branches and leaves sprout in early spring, the larvae are pests. Adults mostly start at night at dusk and are so named because they tend to curl their leaves during the larval stage. The first generation of adult insects appears in late summer and early autumn every year.
7. Other borer pests
1
Cypress-skinned beetle
Life habits: late March to mid-April stings, incubation in mid-April. Mature larvae pupate in mid to late May. Adults appear in early June , and the adults are initially feathered to a slightly yellowish brown in color. Cypress tree branches are often hollowed out, broken in case of strong winds, and when severe, many broken branches fall on the woodland, causing serious damage to cypress trees, and adult insects enter a wintering state after mid-October.
2
Cedar-skinned beetle
Life Habits: In late March, the overwintering adults begin to become active and begin to replenish their nutrition. In mid-April, the egg stage. Larvae appear in early May. In early June, pupae appeared. In early July, adult insects bite out of the holes, fly away from the damaged wood, and disperse overwintering.
3
Pear stem bees
Life habits: Pupate in mid-to-late March, and adult insects feather during the flowering period of pear trees. Spawning begins in early to mid-April. After the end of May, it will continue to feed on the biennial twigs, and overwinter after October.
Main hazards: pears, tang pears, etc. Pear stem bees occur once a year, and the larvae eat the tender shoots of the pulp, and the perturbeds turn black and die.
4
Tea branch sickle moth
Life habits: pupate after late April, pupate in early and mid-May, adults feather in late May and then spawn, early to mid-June into feathering peaks, late June larvae bloom, and begin to see dead shoots after early August. Adults prefer to feather in the afternoon or at night, hide in tea bushes during the day, and are active at night, with phototropism.
Main hazards: tea trees and camellia oleifera. The larvae moth the branches from top to bottom, causing the tea branches to hollow, the branches to wither, and to dry up over time, and the large branches often die or break the whole branch.
Integrated management methods for borer pests:
Drug control
1. Use the Grid Sharp Halberd (tree insect a net), under the pest site or on the trunk, the broken wood chips in the hole are cleaned, drill the hole at an angle of 45 degrees, the hole diameter is 4-5mm, the hole depth is 5-6cm, and the bottle is inserted tightly to prevent it from falling off. Use during the bud germination period to before the leaves fall (the best effect is 4-8 months) to facilitate the conduction of the liquid in the tree.
2. When the insect infestation is serious, you can use the lotto + cruise axe + fire suit, and mix it with water and a sprayer for uniform spraying.
3. Apply medicine to the roots, and the trees will die. For small seedlings with borer insect pests, the root irrigation treatment can be carried out by diluting 2000-3000 times of liquid diluted by shangding, subject to irrigation.
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