What should we do if holly grows insects? pest control of holly / 2 insect pests 2 diseases

In the growth process of holly, the last thing we want to encounter is diseases and insect pests, which do great harm to it, which will not only affect its ornamental, but also lead to its death. So what should I do if the holly grows worms? How does the pest control of holly need to be done? Next, the editor will take you to learn about it.

First, how to do holly worms? find the reason.

If you want to know what to do with holly worms, first of all, we have to find the reason and know what kind of insects are growing, so that we can deal with them pertinently, because the prevention and control methods of each kind of diseases and insect pests are different, and the details are introduced below. Friends who are troubled in this respect can learn about it.

II. Pest control of holly (pest)

1. Aphids

Aphids are a kind of pest that may occur in many plants, and holly is no exception. It mainly absorbs the sap from leaves, stems, tender heads and young ears, which makes the plant lose a lot of nutrients and finally wither.

Control methods: for aphids, which is a pest of holly, the most direct method is to use pesticides to spray them. In terms of pharmaceuticals, we can choose 3000 times of aldicarb wettable powder.

two。 Shell worm

The scale insect is a kind of harmful pest, which mainly threatens the leaves, branches and fruits of holly. It will cause yellowing of leaves, withering of branches, decline of tree potential and so on, as well as coal fouling disease.

Control method: for this holly pest, we can spray it with 1000-1500 times of insecticide mixed with 40.7% Lesbon EC and 80% dichlorvos EC.

III. Pest control of holly (disease)

1. Leaf spot disease

Leaf spot is a disease that may occur in many plants, and holly is no exception. The high incidence period of this disease is in spring and autumn every year, so we must pay special attention to it in these two periods. When this disease occurs, there will be many irregular brown disease spots on the leaves of holly, which will gradually spread with the passage of time, and finally lead to the phenomenon of plant death.

Control method: when we deal with this kind of holly pest, we can spray it with 80% mancozeb 400,600 times or 50% topiramate 1000 times, usually once every 7-10 days, and then recover after 1-2 times.

two。 Bud rot

The disease mainly threatens the young buds and young leaves of holly. At the beginning of the disease, the undeveloped leaves wither first, brown, and then droop. The pathogen will expand from the base of the tender leaves to the young tissue of the bud, causing the bud to die and rot, the plant to stop growing and, in severe cases, the whole plant to die.

Control method: when dealing with this holly disease and insect pest, we can use 80% mancozeb wettable powder 500 times to spray the diseased plant, usually once every 10 days, 3-4 times can be cured.

What to do with the growing insects of Photinia? control of diseases and insect pests / 2 insect pests and 2 diseases

In the process of raising heather, the last thing we want to encounter is diseases and insect pests. This kind of problem does great harm to the plant. It not only affects the ornamental property, but also causes the plant to wither and die when it is serious. What should we do about the long worm of heather and how to prevent and control the diseases and insect pests of heather? Next, the editor will take you to learn about it.

First, how to do when the heather grows, and find the reason.

If you want to know what to do when heather grows, we must first understand what kind of insect is growing, so that we can deal with it pertinently, because the treatment methods of each kind of diseases and insect pests are different, and the details are introduced below. Friends who are troubled in this respect can learn about it.

2. Pest control of Photinia paniculata (pest)

1. Aphids

Aphids are a kind of pest that may occur in many plants, and Photinia is no exception. It mainly uses nymphs to absorb the sap from leaves, stems, tender heads and young ears, which makes the plant lose a lot of nutrients and finally wither.

Control methods: in view of aphids, which is a pest of Photinia, the most direct method is to use pesticides to spray them. In terms of pharmaceuticals, we can choose 3000 times of aldicarb wettable powder.

two。 Shell worm

Scale insects prefer to grow in a warm and humid environment, which is easy to occur if the growth environment is too dry. It mainly threatens the branches, leaves and fruits of Photinia officinalis, which will cause the leaves to yellowing, the tree potential to decline gradually, and finally the phenomenon of wilting.

Control method: when we deal with the diseases and insect pests of Photinia officinalis, we can spray it directly with 1000 times of imidophos or 3000 times of 2.5% deltamethrin.

Third, the prevention and control of diseases and insect pests (diseases)

1. Leaf spot disease

Leaf spot disease, through its name, we know that it is harmful to plant leaves, when the disease occurs, there will be many irregular disease spots on the leaves, and small black spots will appear on the disease spots over time, which will greatly affect the ornamental.

Control method: when we deal with this kind of heather disease and insect pest, we can use 50% carbendazim wet powder 500 times to spray the diseased plant, generally spray once every 7-10 days, and then recover after 3-4 times.

two。 Rust disease

Rust is a kind of plant disease caused by the parasitism of rust in fungi, which mainly harms the leaves, stems and fruits of Photinia. During the onset of the disease, there will be many blister spots in the affected area, and in severe cases, the blister spots will be dense into pieces, so that the plant will die quickly due to the evaporation of a large amount of water in the body.

Control methods: when we deal with the diseases and insect pests of Photinia, we can use 2000-3000 times of uniconazole wettable powder to spray and control plants, generally spraying once every ten days, and can be cured after 1-2 times.

What to do with the growth of Chrysanthemum morifolium? pest control of Chrysanthemum morifolium / 2 insect pests 2 diseases

When we raise chrysanthemum, the last thing we want to encounter is diseases and insect pests. This kind of problem is very harmful to the plant, which will not only affect the ornamental, but also cause the plant to die. What should we do if the chrysanthemum grows? How to control the diseases and insect pests of Chrysanthemum morifolium? Next, the editor will take you to learn about it.

First, what to do when the chrysanthemum grows? find the reason.

If you want to know what to do when the chrysanthemum grows, we must first understand what kind of worm it grows, so that we can deal with it pertinently, because the treatment methods of each kind of diseases and insect pests are different, and the details are described in detail below. Friends who are troubled in this respect can learn about it.

2. pest control of Chrysanthemum morifolium

1. Aphids

Among the diseases and insect pests of Chrysanthemum morifolium, aphids are one of the most harmful, which mainly harms the leaves, stems, tender heads and ears of Chrysanthemum morifolium. It will gradually absorb the juice, resulting in a large amount of nutrient loss and gradually withered phenomenon.

Prevention and control methods: for aphids, this kind of chrysanthemum diseases and insect pests, if the number is small, we can carry out manual hunting, see one pinch one. If the quantity is large, we can use 40% imidacloprid water solvent 1500 × 2000 times to spray.

two。 Beetle

Beetle is a kind of invertebrate, which mainly harms the root system, leaves and buds of Chrysanthemum morifolium, which affects the yield and quality of flowering, and even causes the plant not to blossom.

Control method: when we deal with the diseases and insect pests of this kind of chrysanthemum, we can spray it with 2.5% deltamethrin 2000-3000 times, or trap it under light.

3. Rust disease

Rust is one of the most common diseases and insect pests of Chrysanthemum morifolium. This disease mainly threatens the leaves, stems and fruits of plants. When the disease occurs, there will be many blister spots in the affected parts, and when they are serious, the blister spots will be dense and the plants will die quickly.

Prevention and control method: when rust occurs on chrysanthemum, we can spray it with 2000 times of WP, which is usually sprayed once every 7-10 days, and can be cured once or twice.

4. Black spot disease

Black spot is a kind of disease caused by fungi. many black spots will appear on the leaves of Chrysanthemum morifolium, and the spots will spread gradually with the passage of time, resulting in the gradual death of the plant.

Control method: when preventing and controlling the diseases and insect pests of this kind of chrysanthemum, we can use 7% topiramate 800 times liquid to spray it, usually spray once every 7-10 days, and then recover after 2-3 times.