Good afternoon friends of the headlines! It is now July, the temperature is gradually rising everywhere, and many kiwifruit producing areas have begun corresponding preventive measures. What to prevent?
Nature is insect infestation! The increase in temperature combined with the rainy season is a time of outbreak of insect pests! Now let's take a look at what are the targets of the summer kiwi pest control and what the methods are...
<h1>First, the main diseases and pests of kiwifruit in summer</h1>
According to the field observation records of the Plant Protection and Quarantine Station of Yuanba District, Guangyuan City, Sichuan Province, there are 7 main families of pests that harm kiwifruit, namely scarab beetle family, hard beetle family, chicken family, tian moth family, moth family, moth family, bug family, poison moth family, of which the spotted wax cicada and grasshopper are the most important pests on kiwifruit.
<h1>Second, pests are pest sites</h1>
The main pests of the kiwi part are scarab beetles, such as spotted wax cicadas and grasshoppers that harm the leaves of kiwifruit, grape moths, yellow-tailed poisoners, north China large black gill beetles and flower bugs. The pest infestation period is from May to September, and now it is July, if your kiwi orchard has not yet taken insect control measures, then you must seize the time!
<h1>Third, the key control of pests</h1>
<h1>1. Spotted wax cicada</h1>
characteristic
The spotted wax cicada is one of the important pests on kiwifruit, and the egg blocks are laid in a neat arrangement at the sunny side of the kiwi hedge. Nymphs emerge in mid-to-late May, adults emerge in late July, and remain harmful until early September, with nymphs and adults lasting more than three months. Both adult and nymphs suck up leaf sap, weakening the tree, and the excreted honey juice often induces gray mold. In late May, the nymphs are found in large numbers on the trees, clustered on the back and foliage, and when there are dozens to hundreds of heads on each tree, the leaves and branches are damaged with gray-white spots. When nymphs appear in large numbers, it is not long after the kiwi layer leaves, and the early victimization seriously affects the normal growth of kiwifruit.
Spotted wax cicada
Prevention and control methods
During the peak of nymphs, spraying high-efficiency cypermethrin can be controlled.
In the winter, in time to clear the garden, found on the hedge wax cicada overwintering eggs should be brushed off with a brush in time, or with a stone to break the eggs, this method is simple and effective.
Prevention and control is carried out by protecting natural predators, such as placing the egg pieces of the spotted wax cicada in a sarong, so that the parasitic wasp flying insects can be parasitized.
It is also possible to use the light of the adult insects to trap and kill the insects with light.
<h1>2. Grasshoppers</h1>
Grasshopper is one of the important pests on kiwifruit, occurring early and harmful. In mid-April, climbing from the soil to the budding young leaf tips is harmful, and the constant heads gather together to prick the human tissue with a needle to suck the harm, and in mid-to-late May, adult insects appear, and the adult harm is more intense, which has a greater impact on the early growth of kiwifruit.
Grasshoppers
In winter, when the garden is cleared, applying oil in the range of 0.07 to 0.1 meters from the base of the trunk can prevent grass from being stung on the tree, and once it climbs into the oil, they will be stuck. During the nymph dispersion transfer period, 0.2-0.3 baumedulite sulfur binder can also be used.
<h1>3. Scarab beetles</h1>
Scarab beetles are mainly harmful to the leaves and roots of kiwifruit, adult insects nibble on leaf larvae to eat the roots, seedlings wither, and leaves turn yellow and wilt. It is the most harmful from mid-April to early May, after which it begins to multiply until September, where it overwinters.
cockchafer
Adults can be trapped by black light or killed by hand. During the prevention and control, the larvae are combined with soil ploughing, and the sprinkling of octylthion, bifenthrin and thiamethoxamide is combined. In early to mid-May and July, artificial capture is performed using the pseudo-death nature of scarab beetles. If from July to early August, the amount of scarab beetles occurs in a large amount, and then spray 1000 times the liquid of the enemy insects, if it appears less, there is no need to control it.
<h1>4. Red Spider</h1>
In July and August, when the damage is serious and the temperature is above 30 °C, a generation can be bred in about 5 days.
Red Spider
Sprayed with ethyl helix or bifenthrin, azole ester, and sweep mite net.
<h1>5. Apple leaf curl moth</h1>
Larvae are the main pests of kiwi leaves and fruits. It is common to associate the leaves or fruits together and nibble on the leaves and fruits, and the leaves appear mesh-shaped or absent- and small potholes of irregular size appear on the fruit surface. Generally, activities begin in May, about 45 days a generation, multiple generations occur in a year, and by October they begin to overwinter.
The picture on the left shows the larvae of the apple leaf curl moth, and the picture on the right shows the adult
Removing stumps and leaves and scraping off old bark can effectively remove overwintering cocoons during winter garden clearance. Self-formulated sweet and sour solution can trap adult insects. Spray methrin during egg incubation.
<h1>Fourth, the summary of prevention and control methods</h1>
According to the types and occurrence characteristics of kiwifruit pests, the main control objects should be the relatively harmful spotted wax cicada and grasshopper silkworm. At the same time, close attention is also paid to the occurrence of scarab beetles and grape moths, especially the changes in the number, and taking into account the general pests, the combination of artificial control and pharmaceutical control can ensure that kiwi fruit does not cause serious losses. Specific prevention and control measures have the following aspects.
<h1>1. Artificial prevention and control</h1>
In the winter, in time to clear the garden, found on the hedge wax cicada overwintering eggs should be brushed off with a brush in time, or with a stone to break the eggs, this method is simple and effective. At the same time, applying oil in the range of 0.07 to 0.1 meters from the base of the trunk can prevent grasshoppers from being stuck on the tree, and once they climb into the oil, they will be stuck.
In early to mid-May and July, artificial capture is performed using the pseudo-death nature of scarab beetles.
<h1>2. Pharmaceutical prevention and treatment</h1>
From July to early August, if the occurrence of scarab beetles, Tian'e, and poisonous moths is large, spray 1,000 times the liquid of the enemy insects, and if it appears less, there is no need to control it.
<h1>3. Biological control</h1>
Prevention and control is carried out by protecting natural predators, such as placing the egg pieces of the spotted wax cicada in a sarong, so that the parasitic wasp flying insects can be parasitized. It is also possible to use the light of the adult insects to trap and kill the insects with light.
The specific concept of prevention and control should still be adhered to: the principle of prevention first, comprehensive prevention and control, and try to take corresponding measures before the outbreak of insect pests to prevent in advance.
Talking about the concept of prevention and control of kiwi infestation in summer, teacher Lu Yan said 4 measures:
Measure 1: According to the situation in previous years, find insect pests in advance and deal with them in time
Measure 2: Pay attention to nutritional replenishment, control nitrogen and heavy calcium, and comprehensively supplement trace elements
Measure three: scientific drug use, accurate drug selection, early use (protection), less use of good drugs,
Measure 4: Integrated control - physical insect control, biological insect control, ecological insect control