When it comes to the pest of kiwifruit, there are also many species, such as scarab beetles, leafhoppers, apple leaf curl moths, red spiders, shell insects, etc., these insect pests still have a greater impact on the growth and development of kiwifruit, if not controlled and managed, it is easy to cause tree decline and the park to fall.
Therefore, planting fruit trees, the daily management of pests and diseases is quite important. For example, the kiwi fruit mesozoite that is shared with you today, the harm of this kind of insect pest to kiwi fruit is mainly in two places, branches and fruits. If such pests are found to be harming the tree without restraint, the branches will dry up and the fruit will lose its commodity value when it is sucked up by sap.
Mesothes harm kiwi branches
Mesothes mainly harm kiwi branches and fruits, the types of mesosomes include many, such as mulberry shield borer, Kao's white shield borer, long white borer, pear white borer, coconut roundworm, snake-eye bug, grasshopper, persimmon long sponge powdery beetle, turtle wax bug, red wax borer, etc., they belong to the same winged order of multiple ant families, and the main harm to kiwifruit is the mulberry shield borer, also known as mulberry white borer, mulberry white shield bug.
<h1 class= "pgc-h-arrow-right" > first, the main performance characteristics of mesozoans harming kiwifruit</h1>
Mesozoans harm kiwifruit, mainly by sucking the sap of kiwi branches and fruits in clusters of adults and nymphs. When the insect infestation occurs seriously, it will spread all the branches, layered and dense, and people with phobias will not be able to see that, and will weaken the tree, and even cause the branches to dry up and die, and the damaged fruit will seriously lose its commodity value.
The insects that harm the branches of kiwifruit are densely packed
<h1 class = "pgc-h-arrow-right" > second, learn to grasp the life habits of the kiwi fruit mesozoan, so as to facilitate the sorting out of control methods</h1>
The number of generations in 1 year of mesozoans varies from place to place. 3 to 5 generations occurred in the Yangtze River Basin and its south, and 2 to 3 generations in the Yellow River Basin, in the Cangxi area of Sichuan Province, where the average annual temperature was 16.9 °C, and three generations occurred in the Cangxi area of Sichuan Province, where females overwintered on the branches with fertilized females.
The overwintering females begin to feed in early April, lay eggs under the shell in late April, and hatch in early and mid-May, with a large and neat hatching volume, which is a key period for prevention and control throughout the year. The first generation of nymphs hatches in July, the second generation of nymphs hatches in mid-to-late September, and the third generation of nymphs hatch in mid-October. There is a generational overlap in hatching in the 2nd to 3rd generations, and the female adults enter a wintering state in November.
Mesozoans harm kiwi young trees and cause death
Females like to cluster, and males are scattered. After male and female mating, the male dies quickly. Adults lay their eggs under the mese shell, and after the nymphs hatch, they are inactive for life after crawling to find a suitable part of the fixation (except for male adults). All generations of nymphs parasitize on branches, do not parasitize leaves, and also parasitize fruits.
Female adults have body strips of 0.9 to 1.2 mm, pale yellow to orange-yellowish yellow, and the mesembranous shell is grayish white to yellowish brown, nearly round, 2 to 2.5 mm long, slightly raised, spiral-shaped, and the shell is yellowish brown, eccentric.
Females of the mesoderma
Male adults are 0.6 to 0.7 mm long, spread wings 1.8 mm, orange-yellow to orange-red, antennae 10 segments, candibal presence, forewings are ovate, grayish-white, and hairy; the hindwings are balance rods, needle-like; male adult worm shells are slender, 1.2 to 1.5 mm long, white, with 3 longitudinal ridges on the back, and the shell points are orange-yellow, located at the front end.
The eggs are oval in shape, initially pink and later yellowish brown. The larvae hatch yellowish and pupate orange-yellow.
Males of mesoderma
<h1 class = "pgc-h-arrow-right" > third, combined with the symptoms of the disease and life habits, take effective prevention and control methods to calmly cope</h1>
1. Strengthen quarantine
Mesophyllum generally has a weak natural spreading ability, mainly by seedlings, ear buds and insects, followed by agricultural operations and insect transmission. Prevention points: Strengthening the quarantine of seedlings and ear buds during the transportation process plays an important role in preventing their long-distance spread.
2. Artificial pest control
Pruning insect branches: Combined with pruning, cut off insect branches and concentrate on burning.
Artificial obliteration: For tree trunks with serious harm, wipe off the shell with burlap or straw during the dormancy period of the tree body, and then brush 5 baumedo stone sulfur compounds, or spray 50% dichlorvos emulsion 200 times liquid, and apply it with a pen during the nymph incubation period when the amount of insects is small, which can be completely controlled.
Kiwi fruit spraying to control pests and diseases
3. Pharmaceutical prevention and treatment
During the period of pharmaceutical control, the incubation period of each generation of mesozoan should be mastered. Commonly used agents are, 1000 times of spray pine in May, or 58% wind and thunder 800 times liquid, or 40% poisoning tablet 1000 times liquid, after July spray plant source pesticide 4% Guosheng 1200 times liquid. Gardens with severe pests are sprayed once every 10 days, and sprayed twice in a row. In the peak period of juvenile and nymph insects, spray 25% chlorpyrifos powder 1500 to 2000 times liquid, and the effect will be shown 5 days after the drug.
< h1 class="pgc-h-arrow-right" > concluding remarks</h1>
There are many kinds of mesosomes, and they should be replaced with a variety of agents in combination with the control to avoid the drug resistance of pests. Secondly, the harm of the shell insects to kiwifruit is a more serious one, the damage to the fruit is considered secondary, the important thing is that it will harm the branches, the unhealthy branches will affect the growth and yield of the following year, so after the discovery, we should try to protect the branches from harm.