What pesticides are used in sugar orange

Sand sugar orange is a kind of sweet orange, which is listed before and after the National Day, and the price is not expensive. It can not only be eaten directly, but also can be canned. It is grown in many parts of our country. What pesticide does sugar orange use?

1. Ulcer disease

It occurred in the period of young fruit and shoot growth from April to August. To harm leaves, shoots and fruits.

Prevention and control methods:

(1) when clearing the garden in winter, diseased branches and leaves should be removed thoroughly, and diseased leaves, diseased branches and diseased fruits should also be removed in summer and autumn.

(2) in the spring, summer and autumn shoot growth period, when the leaves are not unfolded, 50% carbendazim wettable powder can be sprayed 500 times 800 times or 50% topiramate 100 times.

2. Anthrax

It can occur all year round, causing damage to leaves, fruits, branches and flower buds.

Prevention and control methods:

The main results are as follows: (1) strengthen the cultivation management and strengthen the tree potential and pay attention to drainage.

(2) clear the garden in winter, cut off diseased branches and remove fallen leaves and fruits from the ground.

(3) when spraying, 0.5% Bordeaux solution or 50% carbendazim 800-1000 times solution can be used.

3. Scab

It mainly harms tender branches and leaves and young fruits. The leaves infected with the disease began to appear watery spots, and then turned into waxy yellow. Many verrucous protuberances often grow after the fruit is damaged.

Prevention and control methods:

When the spring buds germinate 1 cm, spray 50% acetaminophen 500 times or 70% methyl topiramate 800 times. The second time, at the end of flower thanks, spray 70% methyl topiramate 800 times solution.

4. Huanglong disease

Main symptoms: in addition to the appearance of yellow shoots, the main features of the disease are yellowing at the base and margin of leaves and irregular yellow-green mottled leaves.

Prevention and control methods:

The main results are as follows: (1) choose disease-free seedlings and plant in isolated areas.

(2) strictly control the disease vector-citrus planthopper, and spray omethoate 1000 times, aphid lice 2000 times and imidacloprid 2000 times at each shoot stage.

(3) to regulate the diseased tree, dig it up in time and eliminate the source of the disease.

5. Foot rot

Timely drainage, improve the light transmission and ventilation conditions in the garden, strengthen the control of longicorn beetles and other trunk pests; select disease-resistant rootstocks such as trifoliate orange, orange and orange, and replace disease-resistant rootstocks for infected plants. Medicament prevention: apply medicine after scraping the disease spot, the commonly used agents are carbendazim, methyl topiramate and so on.

6. Mites

Citrus red spider, four-spotted yellow spider rust wall lice

Before and after flowering (March-May) and autumn (September-November) are the key periods for the control of red spiders: the population density of red spiders is 1-2 per leaf before flowering and 5-6 per leaf after flowering and autumn. Spring shoot initiation stage, young fruit stage and fruit expansion stage are the main periods for the control of rust lice: ferruginous color appears on the back of spring shoot leaves in the same year, and immediate control occurs when the population density of leaves or fruits reaches 2-3 per leaf. The commonly used agents are thiazox, paraben, alkyne, bromoacarate, dimethomide, etc., and pay attention to protect natural enemies such as long-whisker mites, blunt mites, mites and ladybugs, Japanese beetles and lacewings.

7. Scale

Sagittal scale, red wax scale, cotton blowing scale, etc.

The key period of drug control: the sagittal tip scale is the nymph stage, the red wax scale is the larval stage, a large number of upper shoots are the damage period (usually from the first and middle of May to the middle of June), and the cotton blowing scale is the larval stage. Commonly used agents such as thiazinone, methamphetamidophos, matrine + nicotine, Lesbon, oil emulsion and so on. Pay attention to improving the ventilation and light transmission conditions in the garden, and protect and utilize the natural enemies such as Japanese beetle, red ladybug, lacewing, golden aphid wasp, Australian ladybug, red ladybug and so on.

8. Aphids

The damage rate of new shoots is up to 25%, so it should be sprayed immediately. Commonly used agents are chloramidine, dimethoate, butylthiocarb and so on. Attention should be paid to the protection of ladybugs, lacewings, aphid flies, aphid wasps, etc., cut off overwintering eggs and reduce the base of pests.

9. Leaf miner

The key period of prevention and control is summer and autumn shoot emergence period (early and middle July). Timely erase sporadic summer and autumn shoots, combined with fertilizer and water management to make the new shoots of the plant strong and neat. Chemical control: spray the new shoots to 1-2cm, once in 7-10 days, 2-3 times in a row. The commonly used agents are avermectin, shamindan, cyhalothrin and so on.

10. Longicorn beetles

From May to August, the adults of longicorn beetles and green orange longicorn beetles were artificially killed at noon on a sunny day, and the adults of brown longicorn beetles were killed in the evening; the eggs, newly hatched larvae and damaged branches were cut off in time; the wormholes were blocked after soaking pesticides such as dimethoate with cotton or cotton yarn, and then the wormholes were sealed with soil to kill the larvae.

11. Flower bud maggots

When budding, fine soil such as diazinon powder and diazinon granules were mixed and sprinkled on the surface of tree plate soil, once every 7 days, 2-3 times in a row; when the diameter of flower buds was 2-3mm (now white), spray crowns such as parathion and trichlorfon were selected; the damaged buds were removed as early as possible, buried deeply or boiled, and some overwintering insect pupae could be eliminated by turning deep into the garden soil in winter.