How to do green radish long insects, green radish pest control detailed explanation (three strokes to solve green radish pests)

Green radish is one of the common green plants in the home, because green radish is good to raise and beautiful, so it is loved by people. Before we introduced the efficacy and role of green radish and green radish breeding methods and precautions, now let's take a look at green radish pest control. Any plant, if you don't control pests, it's likely to cause the plant to die.

Green radish pest control

Green radish is a very good green plant, but if you do not pay attention to green radish pruning methods and pest control, it is also likely to lead to green radish death. There are many kinds of symptoms in the prevention and control of green radish diseases and insect pests, and the methods of prevention and control will be different according to different symptoms. The following points have been sorted out:

1. Anthrax

Symptoms: Anthracnose disease mainly leaves the middle, even flowers, but green radish does not bloom oh! The leaves will appear reddish brown or dark brown spots, as the disease worsens, the spots will gradually expand, with ring markings. The same plant will be repeatedly infected.

Green radish anthracnose control methods: clean leaves, spray leaves with clean water, usually more sun exposure. Spray agents, anthrax infection can only rely on agents to contain, you can choose carbendazim, thiophanate or charcoal, dilute the solution spray, 1~2 days once, 3~4 times can see good.

2. Leaf spot disease

Symptoms: leaf spot mainly affects leaves, leaves will appear many small brown spots, and anthracnose symptoms similar, but spots will be spread throughout the leaves. Leaf spot disease is very common, and many people have encountered this condition.

Leaf spot disease control methods: timely removal of diseased leaves, pay attention to ventilation, provide adequate sunlight. Spraying chemicals, using 500 times solution of diethamb, spraying control.

3. Root rot

Symptoms: Root rot as its name implies mainly harms roots, causing rot, which can lead to yellowing and withering of leaves and death of whole plants in severe cases.

Root rot control method: spraying 50% carbendazim during the onset period, or directly irrigating roots with solution. In severe cases, the soil should be changed directly, the green radish should be pulled out, the rotten root part should be removed, and replanting should be carried out. The above is for you to bring green radish pest control, read quickly home to save your green radish bar.

How to do one-leaf orchid long insects, one-leaf orchid pest control/five moves to avoid early fall of yellow leaves

Although the resistance to pests and diseases is very strong, its own adaptability is also very strong, but if you do not understand the correct breeding method of One-leaf orchid, or may be affected by many pests and diseases, if One-leaf orchid long worm how to do? Let's take a look at the prevention and control methods of one-leaf orchid diseases and insect pests.

What about the one-leaf orchid worm?

1. Whitefly

Occurrence rule: usually occurs in spring and summer, the best development temperature of whitefly is 26-28 degrees, its adults and nymph will absorb the sap in the leaves of one-leaf orchid, resulting in leaf atrophy and early deciduous, and even induce soot disease, resulting in thin plant death.

[Control methods]: ① Adjust planting period, fertilizer application amount, etc. to improve the environment around Oneleaf Orchid, and make it cleaner and cleaner during the period;② Spray with omethoate diluted to 1000 times solution with concentration of 40%;③ Protect natural enemies of whitefly, such as hemiptera insects and predatory mites.

2. Aphids

It appears in the tender leaves or new buds of One-leaf Orchid, which will cause the leaves to be greasy, the leaf color to become yellowish, and it will also leave black or yellow spots on the leaves, causing the leaves to yellow and fall off. It is one of the most common pests in the control of One-leaf Orchid diseases and insect pests.

[Prevention and control methods]: ① Sprinkle plant ash on the plant, or brush off aphids with a brush;② Spray with a solution diluted to 1000 times with a concentration of 40% of thimide, usually once every 7-10 days, usually about 3 times to eliminate most aphids.

Pest Control of One-leaf Orchid

1. Coal pollution

Black mold spots appear on the leaves and branches of One-leaf Orchid, and then the tender shoots are covered with black mold layers, and there are many kinds of coal pollution diseases, so the symptoms will be slightly different, but generally the black mold layer is the main feature.

[Prevention and control methods]: ① One of the causes of coal pollution disease is that the plants are planted too densely, and the ventilation of the environment is not good, so the prevention should be timely pruned, the method can refer to the detailed introduction of how to prune the one-leaf orchid;② When the disease occurs, spray with 40% omethoate 1000 times solution or 80% dichlorvos 1500 times solution.

2. Leaf blight

The old leaves turn yellow and brown, and the disease spots begin to extend toward the base of the leaves. Finally, the leaves will turn gray and brown, and small black spots will appear on the back of the leaves.

[Prevention and control methods]: ① Increase organic fertilizers such as phosphorus and potassium fertilizers to improve the ventilation of the environment;② Spray with a solution diluted to 600 times with a concentration of 70% zinc.

3. Grey mold

The diseased leaves will soften and rot, white water-stained spots appear on the surface, and then become gray mold spots. Water spots will also appear on the new young stems, and finally cause the leaves of the one-leaf orchid to rot and wither. It is extremely harmful in the control of one-leaf orchid pests.

[Prevention and control methods]: ① When the diseased leaves are found, they should be removed in time to avoid the bacteria harming other leaves;② Spray with 50% iprolon or 20% pyrimethanil mixed with water once every 5-7 days, usually 2-3 times.

How to do Evergreen long insects, Evergreen pest control (wet places easy to grow insects)

Evergreen leaves are green all year round, but if not well taken care of, Evergreen leaves will also yellow or rot. So how do we treat evergreen pest control? What about evergreen worms? If Evergreen is sick, there will be the following symptoms, and the treatment for each symptom is also different. Let's take a look:

brown soft scale insect

What about the Evergreen bug? Many may grow is this kind of insect, this insect feeding complex, can harm many plants, evergreen is one of the flowers killed. When brown soft scale harms plants, it generally gathers on leaf surfaces or tender leaves, sucks plant sap, and excretes mucus. Its excrement is easy to cause large number of coal pollution bacteria to multiply, make stems and leaves black, affect photosynthesis of plants, cause weak growth potential, and yellow leaves, which hinder viewing. Serious occurrence, branches and stems covered with insects, resulting in yellow plants, affecting growth.

Methods for controlling diseases and insect pests of Evergreen: branches and leaves of Evergreen with many insects need to be cut off, and 20% fenvalerate 2000 times solution, 50% fenvalerate 1000 times solution, 50% monocrotophos 1000 times solution, 40% omethoate 1000 times solution, etc. shall be sprayed selectively.

II. Prevention and control of diseases and insect pests of Evergreen 1. Leaf spot disease

Leaf spot disease occurs on the leaves of Evergreen, especially in humid weather. At first, the disease spots are brown spots, the periphery is water-soaked and greenish, and the development of ring-like, round to oval, brown and grayish white at the edge. Black brown mold spots appeared in the center of the late disease spots, and turned into black brown mold layers under wet conditions.

Methods for controlling diseases and insect pests of Evergreen: Remove diseased leaves in time, and spray 0.5%-1% Bordeaux mixture (or 50% carbendazim 1000 times solution) at the early stage or late stage of disease.

2. Anthrax

This disease also occurs in the leaves of Evergreen, compared to Evergreen long insects, this is the most terrible, serious can spread to petioles. At the beginning of the disease, the spots were water-soaked small macula, and after expansion, they were oval to irregular brown or yellow-brown, slightly ring-shaped, and later the disease spots were connected into a dry shape, and small black spots arranged in ring-shaped.

Solution: This disease is mainly due to poor ventilation and favorable disease occurrence when scale insects are harmful. The method to prevent and cure this disease is to strengthen the maintenance, increase the application of phosphorus and potassium fertilizer, and spray 0.3%-0.5% equivalent Bordeaux mixture (or 60% Zineb 800-900 times solution, or 70% Topzin 1500 times solution) at the early stage of the disease.

Third, Evergreen avoid summer glare direct

Evergreen, like warm and humid and semi-overcast environment, avoid direct summer light. The key to raising evergreen is to avoid direct sunlight when the summer weather is hot and the sunshine is strong. Otherwise, it is easy to cause the leaves to dry and sharp and even yellow, affecting the viewing effect. Therefore, after coming out of the room in early spring, it should be placed under the shade of the scaffolding or eaves or balcony, and the idea should be to prevent rain. Watering in addition to keeping the pot soil moist in summer, watering in spring and autumn should not be too frequent, and watering should be controlled in winter.

Evergreen is succulent root, so most afraid of ponding, if watered too much, easy to rot roots. But must keep the air moist, if the air is dry, also easy to occur leaf dry tip and other undesirable phenomena. Spring and autumn season, every 3~4 weeks apply decomposed cake fertilizer water, can make plants grow strong, green leaves. In addition, before and after summer, several old leaves on the periphery of adult plants should be cut off to facilitate the germination of new buds, new leaves and flowering buds. How do you know what to do with Evergreen long insects and Evergreen pest control methods, do you know what to do?