What pesticides are good for citrus flowering, and what pesticides should be applied when citrus fru

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Citrus hanging fruit can be hit allicin, allicin is generally applied before the citrus veraison period (around September), choose a day with a moderate temperature to spray, avoid cloudy days after veraison, if the potion on the fruit is not dry at night after spraying, it is easy to burn the fruit. Note: Citrus with allicin at the young fruit stage will have a certain effect, and black spots may appear.

Allicin can control a variety of diseases caused by fungi and bacteria in citrus, such as citrus moss, anthracnose, penicillium, canker disease, etc.

Citrus enters the fruit-preserving period and is inseparable from regulators, so gibberellin and benzylaminopurine have also become a hot topic for citrus fruit preservation.

For some old fruit farmers, there is a complete set of fruit preservation programs in citrus fruit preservation, because they know that citrus is a fruit tree with a large amount of flowers, and it is difficult to preserve fruit by itself, so hormone fruit preservation is a relatively stable technology, among which gibberellin and benzylaminopurine can effectively prevent citrus physiological fruit drop and reduce the amount of fruit drop.

Although these two regulators can protect the fruit, but the experienced old fruit farmers in the process of use, gradually found that benzaminopurine is very effective in preventing the first physiological fruit drop of young fruits, and will not cause thick peel, but it can not have such a good effect when used in the second physiological fruit drop, and gibberellin is very effective in preventing the first and second physiological fruit drop of young fruits, but there are strict requirements on the concentration and number of uses, otherwise it will cause thick peel.

After the flowers are 8 years old, immediately hit the fruit protection medicine (gibberellin) plus foliar fertilizer (mainly to promote the small fruits to turn green and the spring shoots to mature) + fungicide. After 10 days, a second fruit preservation will be performed.

I use fruit-preserving fertilizer, organic titanium-boron-calcium foliar fertilizer, fruit set is more stable, and the quality and taste of the fruit in the later stage are good!

For different pests and diseases, different agents should be selected, as follows:

1. Scab disease.

On the basis of clearing the garden in winter and strengthening the management of orchards, the disease should be prevented by pesticides in three periods: the first time when the spring buds grow to 1 2 mm, the second time when the flowers are two-thirds down, and the third time when the young fruit beans are large.

The agent can be sprayed with the same amount of Bordeaux liquid or 20% thiamium copper 500 700 times solution, 20% Dysen water dispersible granules 500 700 times liquid.

2. Anthrax.

Combined with spring pruning to remove diseased branches and fruits, the protective branches and leaves should be sprayed once in the tender shoot period of spring, summer and autumn, and the young fruits should be sprayed once every 15 days within 1 month after flowering, 2 3 times in a row.

You can choose 80% mancozeb, Lu Qiaoda wettable powder 400 600 times liquid or 50% carbendazim wettable powder 600 times liquid and other sprays.

3. Psyllids. The insect pest is a vector of citrus huanglongbing, and the spring shoots should be sprayed once when they germinate to 2 5 mm, and then sprayed once every 7 10 days.

It can be sprayed with 40% propyl bromide emulsifiable concentrate 1000 times or 40% chlorpyrifos emulsifiable concentrate 800 times, 22 methyl cyano azolephos emulsifiable oil 1000 times.

4. Red spider.

When there are 6 insects per leaf, spraying should be sprayed.

You can choose 99% mineral oil emulsifiable concentrate 200 250 times liquid or avermectin emulsifiable concentrate 1000 1500 times liquid and other sprays.

5. Leaf miner.

In the period of overwintering adult unearthing activities, 40% chlorpyrifos emulsifiable concentrate 1000 times or 80% dichlorvos emulsifiable concentrate 800 times liquid and other agents are sprayed, and combined with ground spraying 40% phoxanthal 400 600 times solution.

In early April, the peak period of young nymphs can be treated with 25% imidothion emulsion 800 times or 48% chlorpyrifos emulsifiable concentrate 1000 times, avermectin emulsifiable concentrate 3000 times and other spray control, severe spraying 2 3 times after 5 7 days.

6. Flower bud maggots.

When the flower buds begin to turn white and the adults begin to emerge and unearthed, 80% dichlorvos EC 800 times or 20 fenvalerate EC 3000 5000 times can be used for ground application control, 5 7 days 1 time, spray 2 times;

Most of the flower buds are white (2 3 mm in diameter), and before the adults are unearthed from the tree and do not lay eggs, they can be controlled with 90% trichlorfon 1000 times or 40% deltamethrin EC 1500 times, 10 cypermethrin EC 1500 2000 times, 40% octathion EC 400 600 times, etc.

1. The types of insecticides can generally be sprayed with pesticides such as imidacloprid, pyraclostrobin, thiazole rotanomelide, thiazole zinc, pyridafen and other pesticides during the flowering period. When choosing pesticides, it is not advisable to choose highly toxic pesticides, try to choose low-toxicity pesticides, and should not use emulsifiable concentrate, so as not to peel the young fruits. 2. Pesticides that cannot be used during the flowering period (1) Stone sulfur mixture sulfur mixture is a commonly used bactericidal acaricide, but it is easy to cause shrinkage.

If used during the citrus flowering period, it will cause the flowers to fall off and affect the citrus yield in the later stage. (2) Gibberellin gibberellin can generally be used, but it should not be used for a long time, and the dosage should not be too much. Citrus trees need to be adequately fertilised and watered before application if needed.

3) Organophosphorus pesticides with high toxicity should not be used during the flowering period of organophosphorus, which can easily lead to the deformation of new shoots and the large-scale shedding of flowers, which affects the growth of citrus. 2. Can urea be applied during the flowering period of citrus? 1. Can urea be applied during the flowering period?

Generally, urea can be applied during the flowering period, and urea and compound fertilizer are usually suitable during the flowering period, and urea needs to be applied according to the growth and flowering amount of citrus. If rhizosphere fertilization is required after the flowering period, for plants with fruits of more than 10 kg, 200 grams of ternary compound fertilizer, 100 grams of urea, and dilute manure can be applied to each plant. 2. How to fertilize correctly during the flowering period?

1. Xie Hua Fei Generally, if you use water and fertilizer made from peanut cakes, you can generally spray it at the beginning of flowering. If the amount of raw cake in the water fertilizer is insufficient, an appropriate amount of chemical fertilizer can be added to the water fertilizer. Xie Hua fertilizer is a very important primary fertilizer because a large amount of nutrients are already consumed during flowering and spring bud germination.

If fertilizer is not supplemented in time at this time, the number of first physiological fruit drop will increase, and the second physiological fruit drop will occur earlier. (2) Citrus foliar fertilizers commonly used in foliar fertilizers include urea, potassium dihydrogen phosphate, amino acid water-soluble fertilizers, and macro-element foliar fertilizers. During the flowering period, attention should be paid to the application of nitrogen fertilizer.

1.Citrus is susceptible to pests and diseases during the flowering period, and common insect pests include aphids, thrips, spider mite, and psyllids.

2.Diseases include anthrax, canker, brown spot, scab, etc.

3.However, some drugs are not available during flowering, and it is recommended to do a good job of prevention and control before flowering.

4.7 to 15 days before flowering, spray imidacloprid, pyraclostrobin, ethazole nitrile, and zinc thiazole, and the specific medication is determined according to the actual situation of the orchard.

After the citrus flowers bloom, what pesticides should be applied?

Foliar sprays are applied with borax plus potassium dihydrogen phosphate during flowering. At gardenia 3 4, spray with 50 mg of gibberellin plus urea, or 10 mg of rooting powder with urea. Foliar sprays should be carried out on cloudy days or in the evening.

From late June to early August, nitrogen, phosphorus, and potassium compound fertilizer were applied once to promote fruit growth and flower bud differentiation. Dosage per kilogram per plant is blind. Every winter, 15 cm outside the canopy, deep ploughing and fertilization and soil cultivation, mainly organic fertilizer, 25 kg of calcium, magnesium and phosphorus fertilizer are added per 667 m2 of 2000 kg to protect gardenia wintering and restore tree potential.

Summary. Hello fellow <>

We'll be happy to answer for you. Use Bihu 15,000-18,000 times + potassium dihydrogen phosphate foliar fertilizer + 300-500 times liquid American star or alginic acid multi-element active foliar fertilizer per mu, or choose brassinin 4000 times spray + potassium dihydrogen phosphate + amino acid foliar fertilizer, spray once 7 days after the first spraying, and then spray 1-2 times at an interval of about 15 days. This can not only significantly promote the expansion of citrus fruits, but also have no other ***, and can effectively increase the sugar content of citrus and enhance the taste.

What pesticides to use to make citrus grow.

Hello fellow <>

We'll be happy to answer for you. Use Bihu 15,000-18,000 times + potassium dihydrogen phosphate foliar fertilizer + 300-500 times liquid American star or alginic acid multi-element active foliar fertilizer per mu, or choose brassinin 4000 times spray + potassium dihydrogen phosphate + amino acid foliar fertilizer, spray once 7 days after the first spraying, and then spray 1-2 times at an interval of about 15 days. This can not only significantly promote the expansion of citrus fruits, but also have no other side effects, and can effectively increase the sugar content of Zhenyu citrus and enhance the taste.

A large number of practices have shown that as long as the citrus fruit expansion period, under the condition of ensuring sufficient water and fertilizer and good pest control, the above two formulas of bulking agents can be significantly increased by at least 30% after spraying.

Summary. E3 foliar fertilizer. The main insect pests in the flowering period of citrus are citrus bud maggots, aphids, thrips, red spiders, etc., and the diseases are mainly scabs, anthrax, sarptia, flowing gum, and gray mold.

Prevention and control should be carried out according to the actual condition of the orchard, because citrus flowering is more sensitive to drugs, remember the safety of the use of pesticides. If the use of alkyne mites in the flowering period is easy to cause tender shoots and leaves to curl, affecting the quality of flowering.

E3 foliar fertilizer. The main insect pests of Wookie in the flowering period of citrus are citrus bud maggots, aphids, thrips, red spiders, etc., and the diseases are mainly scabs, anthrax, sand skin disease, flowing gum, and gray mold. Prevention and control should be carried out according to the actual condition of the orchard, because citrus flowering is more sensitive to drugs, remember the safety of the use of pesticides.

If the use of alkyne mites in the flowering period is easy to cause tender shoots and leaves to curl, affecting the quality of flowering.

Precautions: On the basis of applying sufficient winter fertilizer (winter fertilizer burial: organic fertilizer + compound fertilizer + medium and trace element fertilizer), in the early stage of spring bud germination, a quick effect of slightly fertilization is applied according to the tree potential, mainly water-soluble fertilizer.

The weaker tree can supplement foliar nutrition, enhance the limb cavity, promote the normal development of flowers, and reduce the fibrillation and reduce flower and fruit drops. You can choose to spray boron fertilizer and a variety of trace elements, and the foliar surface can be sprayed 1-2 times. After budding, thinning the leafless inflorescence branches, when the flower buds are white, pruning pests and diseases, deformity, leafless degradation, dense small flower buds, and maintaining flowers, old leaves, and new leaves for 1:

1: Scale. After flowering, the leafless small fruits, deformed fruits, diseased fruits, small fruits and weak hanging fruit branches of the stunted trees and branches with too many hanging fruits were thinned, and the leaf-fruit ratio relationship of 10-20 normal functional leaves was maintained in each fruit.