What pests and diseases should be focused on during the spring shoot and flowering period of mango?

The main pests and diseases of mango are anthracnose, powdery mildew, gum blight, Spodoptera exigua, etc. Plant-specific insect repellent should be used to effectively prevent the occurrence of these mango pests and diseases.

Mango spring shoots and flowering period should focus on the prevention and control: anthracnose, powdery mildew, bacterial black spot, Spodoptera exigua, flat-beaked leafhopper, leaf cutting weevil, leaf gall mosquito, thrips, mites, aphids, etc. The main targets of control are anthrax, powdery mildew, Spodoptera exigua, flat-beaked leafhoppers, aphids and stink bugs.

Key prevention and control during the flowering period, anthracnose, powdery mildew, bacterial black spot disease, horizontal line tail night, flat-beaked night cicada, leaf-cutting weevil, aphid mites, thrips, etc.

The main insect pests are as follows: 1. The harm of thrips, the number one insect pest of mango canopy leaf stage, flowering stage, adult and nymph suck the juice of young tissues, and the color of the damaged leaves becomes pale like hot water scalding, and black necrosis appears 2. The harm of the flat-beaked leafhopper: The weak insect or adult of the flat-beaked leafhopper is by piercing the young tissue of the mango leaf, absorbing the juice inside, and then causing the young shoots and flower buds of the mango to dry up and the fruit to fall off 3. The harm of the leaf-cutting weevil:

Its adults feed mainly on the epidermis and mesophyll of young leaves, and the leaves are curled and dried up 4. The harm of scale insects: scale insects not only harm the branches and leaves of the crown, but also harm the fruit in the growth stage of mango and suck the juice to reproduce. Often hiding on the back of the leaves, the damaged parts turn yellow, affecting photosynthesis.

During the flowering period, each tree can be covered with soil and applied half a catty of 15-15-15 nitrogen, phosphorus and potassium compound fertilizer, the fruit tree can appropriately reduce the amount of fertilizer if it grows well, and the growth of weak can appropriately increase the ...... of scale insects, leaf cutting weevils, etcAmong them, thrips are the most difficult to control. Thrips not only harm the buds and leaves, but also the flowers are even more harmful, and during the flowering and fruiting stage, the affected flower buds will slowly turn black until they wilt and die. The surface of the damaged young fruit will appear black brown or rusty brown needle-like dots, and fertilizer will be added.

After the fruit trees are flowering, the fruit trees with an increased fruiting amount can be top-applied with about 1 kg of nitrogen fertilizer and about 1 kg of potassium fertilizer for each tree, and <>

When the tree grows strong or weak, the time of pruning is early and late, and the overall link is not well coordinated, it is really time-consuming and laborious to manage, and sometimes the shoots that are finally out are eaten by thrips is the most pity. During this period, if all kinds of germs are not well controlled, they will be lurking in the canopy leaves, bacterial brown spot disease mainly harms leaves, branches and fruits, at this time, the use of chunleimycin, amino-oligosaccharides, mesomycin and other control. Downy mildew and blight mainly harm the inflorescence and make the inflorescence wilt, and pyraclostranium ester, zinc propylene and morpholine are used in the prevention and control.

Gum-flow disease causes branches

At this time, thrips are very harmful! Thrips living habits are diurnal and nocturnal, and it is recommended to take medicine in the afternoon! Generally, the medicine should be started five days before flowering, and it is advisable to spray it 2-3 times after the flowers fall! Here we recommend the prevention and control agents ethyl spinosadin, halodioxapyr, thiamethoxam, acetamiprid, etc.

At the beginning of the flowering period, we should pay attention to controlling the humidity, the soil moisture is 50-70%, and the air humidity should also be controlled in the facility. Anthrax, downy mildew, brown spot, viral disease, sunburn and various deficiencies. Pests are:

Green blind bugs, beetles, thrips, etc. Growing grapes is a systematic project, and every link needs to be well coordinated, so all pests and diseases should be pruned in combination with the autumn and winter of the previous year

Prepare the corresponding pesticides in advance for prevention, but also pay attention to management skills, but also pay attention to observe the pathogen situation of the soil, fertilize and water on time, choose fertilizers suitable for the mango flowering and spike stage, and so on.

A large number of pesticides should be sprayed at this stage, so as to avoid pests and diseases, and this can also be well prevented, and the most important thing is that it will not cause too much damage to the fruit.

First of all, when planting, you must choose a land with relatively fertile and wide soil. In the process of fertilization, you must choose farmhouse fertilizer, do not use fertilizer bought outside. It is also necessary to water more often, and it is also necessary to prevent the occurrence of pests and diseases, and if there are small bugs, then be sure to spray insecticides.

Mango powdery mildew: Mango powdery mildew is an important disease in the flowering period of mango, which is harmful to inflorescences. Flower stalks and sepals are the most susceptible, and when these organs are susceptible, the flower buds stop developing, and the diseased parts are covered with powdery mildew. The base of the inflorescence first turns brown, and gradually the whole branch turns brown, causing flower drop.

Temperature is the main factor affecting the occurrence of mango powdery mildew. When the average monthly temperature is 21 22, it is most suitable for the occurrence of powdery mildew. According to the report of our station, powdery mildew in the flowering period of mango this year is moderately severe (level 4), and the epidemic time is late February and early April.

Mango anthracnose: Mango anthracnose mainly affects flower spikes and young fruits in spring. The flowers are infected, and the inflorescences of the whole branch suddenly wither, turn black and fall off.

The young fruit is infected and begins to appear water-soaked, and then the lesion becomes black and has a ring pattern. High temperature, heavy rain, heavy fog, hot and humid weather is the most suitable for the occurrence of anthrax. According to our report, this year's mango flowering anthracnose occurred moderately (grade 3), and the largest occurrence time was mid-March, and mango anthracnose was mainly prevented.

Mango thrips: Mango thrips are the main pest of mango during flowering and are the main insect pest of mango inflorescences. Thrips chicken flea size, tea-yellow, overlapping generations, frustrated mouthparts.

Adults and nymphs are used as pests to flower buds and inflorescences. The epidermis of flower buds and inflorescences is blackened after contusion or the wound is infected by germs. According to the test report of our station, this year's mango flowering period thrips occurred moderately (level 3).

Mango aphid: It is a frequent major pest. Adults, nymphs often gather in the flower spike to suck tissue juice, the damaged flower spike loses water and shrinks, affecting the normal development of flowers, causing a large number of flower drops, and also secreting honeydew, inducing soot disease, according to our station report, this year's mango flowering aphids occur moderately (grade 3).

The prevention and control of mango pests and diseases in the flowering stage should be prevented by timely spraying in the early stage of the occurrence of pests and diseases. For the prevention and control of mango powdery mildew and anthracnose, you can choose to spray with 25% propiconazole EC 1500 times or 25% prochlorazole EC 1500 times or 40% flusilazole EC 3000 times or 25% difenoconazole 1500 times for spray control. Mango, thrips, and aphids can be sprayed with 3000 times of 36% Ahimi water dispersant and 1000 times of 5% mariaceut.

Mangoes are susceptible to pests and diseases during the juvenile fruiting stage. After suffering from the hazards of Spodoptera exigua, Brachycephalic leafhopper, and longhorn beetle, it is easy to cause serious flower and fruit drop. A variety of targeted drugs + new high-lipid membrane should be sprayed for prevention and treatment.

One time of fast-acting nitrogen fertilizer was applied to flower bud development and full flowering stage to promote flower bud development and improve fruit setting rate. At the end of April and the beginning of May, it is the period of rapid growth of fruits, and it is also the period of rapid growth of shoots in spring and summer. Therefore, it is necessary to apply strong fruit fertilizer to reduce fruit drop.

During the flower bud differentiation stage, the ring brushing promotes Kao 2, so that the growth function of the fruit tree can be transformed into reproductive function, the ecological nutrition self-matching is adjusted, the crazy strip is controlled, and the flowering genes and flower ovary are strengthened. So that the fruit tree blooms more and sets more fruit year after year. In the young fruit stage, spray strong fruit pedicle to thicken fruit pedicle to increase nutrient delivery and prevent the occurrence of fruit drop, cracked fruit, stiff fruit and deformed fruit.

Make the fruit colored, beautiful and tasteful.

The chemical fertilizer used is still organic fertilizer, whether you use fungicide or not, depending on how the back of the leaf is.

The main diseases of mango are:

Mango powdery mildew, bacterial black spot, mango gum disease, mango stem rot. Insect pests include: thrips, mango flat-beaked leafhopper, mango transverse-tailed armyworm, mango leaf gall mosquito, mango borer moth, mango weevil, longhorn beetle and acacia sac moth.