Original Chen Ping Innovation Studio
Pomegranates are delicious and we all know
Worms also know, so they will try their best to find opportunities to enjoy the pleasure on the tip of their tongues
They were happy, and the peasant uncle was unhappy
However, the high content of pomegranate tannins and the waxy peel protective clothing, it is not easy for insects to succeed
Therefore, pomegranate insects are less infested than other fruit trees
But there are always a few "bests", and when spring comes, they are also ready to move
Let's recognize it and keep an eye on it
See what it does?
Horned wax beetles, also known as horned wax worms, harm branches and leaves with adult and nymphs. The leaves turn yellow, the surface of the trunk is uneven, the bark is longitudinally cracked, resulting in a gradual weakening of the tree, and the excreted honeydew often induces coal pollution to occur, making the entire plant black.
Horned wax beetles occur once a year and fertilized females overwinter on the branches.
In the first hatching nymphs, the females are more harmful than the branches, and the males are more likely to cluster on both sides of the main vein on the leaves. The newly hatched nymphs stay under the mother for a while, crawl out and scatter on the young leaves and young branches to suck the harm, and the 2nd instar nymph secretes white wax filaments and fixes them on the branches.
Pack it up!
In the early stages of horn wax beetle occurrence, when the density of the insect mouth is small, it is found in time to peel off the insect body or prune the high-density branches.
Rational whole branches, improve ventilation and light transmission conditions.
Spray 2.5% Uranus emulsion 2000 times liquid, or 2.5% enemy killing emulsion 3000 times liquid, or 40% chlorpyrifos emulsion 1000 times liquid at the peak of egg hatching.
More than 20 species of natural enemies have been found, and predatory predators are red-spotted ladybird, two-star ladybird, Mongolian light ladybird, black-edged red ladybird as the dominant species, and snails of the same type also prey on nymphs. Parasitic natural enemies are the red wax fly flat horn jumping wasp, long shield golden wasp, wax flying wasp, soft aphid wasp as the dominant species, and the parasitic rate can reach about 50%.
The citrus mealybug , Pseudococcus citriculus Green , is an insect of the genus Whitefly in the family Epiphyllaceae. It is distributed in various citrus producing areas in China. It is mainly harmful to citrus, pear, apple, grape, pomegranate, persimmon and other fruit trees
Female adults are 2 to 2.5 mm long, oval, reddish or yellowish brown, covered with white waxy discharge on the outside of the body, with 17 pairs of white slender wax spines at the body margin, the length of which gradually grows from the front to the back end, and the last pair is particularly long, equal to 1/3 to 2/3 of the body length. There are 8 antennae, of which the second, third and apical segments are longer. Slender feet. The male adult is about 1 mm long, purple-brown, with 1 pair of wings and 2 pairs of longer white wax filaments at the end of the abdomen. The eggs are oval in shape, pale yellow, and are laid in a cotton-woolen oocyst under the mother. The hatching nymphs are flattened and oval in shape, with well-developed antennae and feet.
Citrus small mealybugs occur in about 4 generations per year, mostly female adults and some nymphs overwintering on the branches and leaves. In mid to late April, overwintering female adults form oocysts under the body and lay eggs. Female adults and nymphs do not live a fixed life and can crawl throughout their lives. The first generation of nymphs are mostly harmful in the back of the leaf, petiole, fruit peduncle and branch scars, and in the second and third generations, nymphs are mostly harmful in the fruit peduncle.
Sample, still pack!
Heavy pruning of insect branches, combined with medication to pick and treat, strengthen fertilizer and water management, enhance tree potential.
Protecting and utilizing natural enemies and limiting the period of medicinal control to the second generation of nymphs before the occurrence of nymphs or after fruit harvest can cause less harm to natural enemies. Predators can also be diverted and released. The natural enemies that have been found are: powdery beetle tricolor jumping wasp, powdery beetle long rope jumping wasp, whitefly blue-green jumping wasp, round-spotted curved leaf caterpillar, black square hair ladybird and Taiwan small ladybird. These predators can effectively control the pest of citrus mealybugs.
Do a good job of insect monitoring and reporting, and use drugs to treat the first generation of nymphs. Spray once every 21, 35, and 56 days after the first generation of nymphs is confirmed.
Pharmaceutical control: for the control of nymphs, 40% oxidized Leguo emulsion, 40% hydroamine thiophos emulsion emulsion, 40% rapid culling emulsion, 40% Lesben emulsion, 25% quetiphosphorus emulsion, its application concentration is 1000-2000 times liquid, 25% Urad emulsion 1500 times liquid, motor oil emulsion 100-200 times liquid. For the control of female adult insects, one of the above-mentioned organophosphorus pesticides plus motor oil emulsion can be sprayed after mixing with water, and the volume ratio of the mixture is 1:60:3000 (organophosphorus pesticide: oil emulsion: water).
In addition, the 0.5% fruit holy water agent 500 times liquid is also effective for adult and nymph mixed populations.
Peach borer, lepidoptera borer insects, commonly known as borer heartworm, adult body surface scattered many black spots, similar to leopard print, also known as leopard striped borer, to the larvae into the fruit to feed as a pest, the victim fruit is full of insect manure, easy to cause cracked fruit and decay, seriously affecting the quality and yield.
The insect overwinters as an old mature larvae in thick cocoons in dry fruits, trunk branches, tree holes, under the skin, under soil blocks and straw.
The 1st generation of larvae are mainly harmful to early ripening peach fruits and plums and apricots, the second generation larvae are infested to medium and late ripening peach fruits, corn and sunflowers, and the 3rd generation larvae are mainly harmful to chestnut fruits. Eggs are mostly scattered in the calyx of the fruit, followed by the two fruits and the fruit surface or stem covered by the leaves, after hatching, the small larvae immediately moth the fruit, on the peach by the fruit stem or the fruit and the leaf adjacent to the moth, a generation of larvae are mainly harmful to the early maturing varieties of peach. Adults have a strong tendency towards light and sweet and sour solutions.
Where to escape?
Clear the garden in winter, eliminate the middle host, scrape off the old bark of the trunk, and eliminate the overwintering larvae. Maintain and utilize natural enemy control and manual removal of insect fruits. Sweet and sour solution traps adult insects. Fruit bagging protection. Pharmaceutical control: availability of decoys monitoring. When the adult occurrence is large, it can be sprayed with a 2500-fold solution of the pyrethroid pesticide emulsion at intervals of 20 d to 30 d.
Green blind bugs, larvae are mainly harmful inflorescences, young shoots; nymphs are mainly harmful to flower pests, young leaves and other young tissues; adult insects mainly harm young fruits, young leaves. Larvae, nymphs, and adults are infested by sucking with a mouthpart.
A year generally occurs 3-5 generations, there are also 6-7 generations in the region, every spring from the end of March to April, when the temperature and humidity are suitable, the overwintering eggs begin to hatch, generally ground weeds, dead branches and leaves on the eggs hatched first, in late April, the eggs on the top buds hatched centrally. After 15 to 20 days, the nymph enters the peak of feathering and enters adult form, and the adult lifespan is long, with an egg laying period of about 30 days. Non-overwintering eggs are mostly scattered in young leaves, stems, petioles, veins, young buds and other young tissues, with an egg period of 7-9 days. In mid-June, as the host's young tissue decreases, the adults move to the surrounding weeds. Around the beginning of May, early June, mid-July, mid-August, and the end of September, one generation of adult worms occurs each, with irregular occurrence periods and overlapping generations. By October, the last generation of adults returns to the orchard from the surrounding weeds and lays eggs in the gaps of dead leaves, bud scales and coarse skin for incubation in the coming year.
Both green blind bug nymphs and adults have the characteristics of hidden harm, and the green body color makes it difficult to detect on the leaves of fruit trees. Nymphs jump very fast and react quickly; adults have strong flight ability, like shade and wetness and are afraid of dryness. Nymphs and adults are phototropic, food-oriented, active, and active day and night, but active at night, and mostly lurk or crawl in hidden places such as leaf back and petiole during the day.
Strangely pompous and deceptive
Clear the garden in winter or early spring to kill the wintering eggs. Spray 2500 times of 20% permethrin emulsion during the incubation period of wintering eggs, nymph bloom period and after flowering.
棉蚜 Aphis gossypii Glover
Homoptera aphids. Also known as honey worms, melon aphids and so on. It is found throughout the country and is an important pest of citrus. In addition to citrus, there are more than 100 kinds of plants such as lychee, longan, loquat, bayberry, pear, apricot, cotton, soybean and so on. Adults and nymphs are mostly infested with fully unfolded leaves, resulting in shrunken and deformed affected leaves. It can also secrete honeydew, which can induce soot disease. It can also spread citrus recession disease by drug use.
Adults There are two types of adults, nymphs, winged and winged. Wingless tires are mostly dark green, brown or black in spring. In summer, it is mostly yellow-green. The wings are yellow, light green, or dark green.
Wingless aphids are yellowish-white to yellow-green in summer and bluish-gray to yellowish-green or blue-green in autumn. Winged aphids are yellowish brown or yellowish green in summer and blue-gray-yellow in autumn, with short black-brown wings and wax powder on their bodies.
It can occur for 20 to 30 generations a year, overwintering with eggs at the base of branches of plants such as hibiscus, pepper and pomegranate. In March of the following year, the overwintering eggs hatch into dry mothers, and the breeding begins when the temperature rises above 12 °C. Completes 1 generation in 19 to 20 days in early spring and late autumn, and 1 generation in 4 to 5 days in summer. The optimal temperature for reproduction is 16 to 22 °C. Known predators include a variety of ladybirds, grasshoppers, aphid-eating flies, etc. Parasitic predators include 3 species of aphid cocoon wasps and 1 species of jumping wasps.
Brown cotton aphids
Black wingless cotton aphid
Wingless cotton aphid and winged cotton aphid
Cotton aphids are harmful to flower buds
Although small, the appetite is not small, do it!
Protects ladybugs, aphids and other aphids from predators. Place the yellow armyworm plate. Prune the dead branches. Pharmaceutical control: Before flowering or before leaf rolling, sporadic aphids can be found not to be sprayed, such as insect population density can be used 2.5% fish vine ketone emulsion 400 ~ 500 times liquid. During the fruit growth period, use 3% acetamidine wettable powder 1000 to 2000 times liquid or 10% imidacloprid wettable powder 2000 to 3000 times liquid, with an interval of 15 days to 30 days.
Jujube inchworm, extremely recognizable, it is estimated that no one can not recognize
In one generation per year, a small number of individuals complete the first generation in pupae for 2 years, overwintering in the soil 3 to 20 cm deep under the canopy, and more pupae near the base of the trunk.
The feathering period of adult insects is from mid-February to early April of the following year, and the peak period of feathering is from late February to mid-March. Evening cross-over. Female moths lay a large number of eggs within 3 days after mating, and each female moth lays 1000 to 1200 eggs, and the eggs are mostly laid in the cracks of the coarse skin of the branches, and the egg stage is 10 to 25 days. The larvae begin to hatch when the buds germinate, and hatch in late March to early April.
From March to June, the larvae are infested, and April is the most harmful. The larvae like to disperse activities, crawl quickly and can spit silk sag to transfer and spread by wind, and the larvae have pseudo-death, and when disturbed, they spit silk sag. The feeding intake of the larvae increases sharply with the age of the insects, and the mature larvae pupate in the soil from mid-to-late April to mid-June.
The feathering of adult jujube inchworms is greatly affected by the weather, and the feathering is more abundant on sunny days with high temperatures, and less is unearthed on cloudy or rainy days with low temperatures.
Pupae overwinter at 5 to 10 cm in the soil. In late March of the following year, the average temperature of 5 consecutive days was above 7 °C, and the adult insects began to feather when the soil temperature of 5 cm was higher than 9 °C, and the early spring rainy and favorable occurrence, the soil drying and excavation were delayed and scattered, and some were delayed for 40 to 50 days. After the female moth emerges, it inhabits the base of the trunk or on the soil block, in the weeds, climbs to the tree at night, and waits for the male moth to fly to mate, and the male insect has phototropism. Eggs are mostly laid in the rough skin slit or at the branches, each female can lay more than 1,000 eggs, the egg period is 10 to 25 days, and the general mulberry begins to hatch when it germinates. The larvae are 5 years old, the calendar period is about 30 days, the larvae can spit silk drooping, from the end of May to the beginning of July, the larvae are gradually matured into the soil to pupate over the summer and winter.
Those who open their teeth and claws can fight violence!
Prevent female adults and larvae from tying a 15 to 20 cm wide plastic film band at the base of the trunk before feathering, surround the trunk for a week, compact the lower edge with soil, nail the interface firmly, and coat the upper edge with a stickworm drug belt, which can prevent the female moth from laying eggs on the tree, and prevent the larvae under the tree from crawling up the tree after hatching. Preparation of armyworm agents: 10 parts of butter, 5 parts of motor oil, 1 part of permethrin agent, fully mixed and ready.
To kill the eggs, a ring of grass is tied under a plastic film band that surrounds the trunk to lure the female moth into laying eggs. Change the grass ring once every half a month from the date of adult feathering, and burn it after replacing it, so that the grass ring can be replaced 3 to 4 times.
Knocking tree vibrators use the suspended death of 1st and 2nd instar larvae to destroy the larvae in time.
To protect natural enemies, swollen tarsus bees, silkworm chase parasitic flies and colorful broad-fronted parasitic flies, with jujube inchworm larvae as the host, the parasitism rate of old mature larvae can reach 30% to 50%. Care should be taken for protection.
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