Witch hazel pest and disease control methods, focusing on 2 types of pests and 3 types of diseases

Pests and diseases are one of the most unwelcome situations plants can encounter during growth, and witch hazel is no exception. These problems are extremely harmful to it, not only affecting its ornamental value, but in severe cases also causing it to wither and die. So what should you do when witch hazel gets infested with pests? How should witch hazel pest and disease control be done? Let's take a look below.

1. What to do when witch hazel gets infested with pests: find the cause

To know what to do when witch hazel gets infested with pests, we first need to know what kind of pest it is, so that we can deal with it in a targeted way, because the control methods for each pest and disease are different, and we need to treat the specific problem. Below are the symptoms and treatment methods for various common pests and diseases of witch hazel, which you can learn about.

2. Witch hazel pest and disease control (pests)

Large bagworm

The large bagworm is a moth of the genus Clania in the family Psychidae, order Lepidoptera. The peak period for this pest is February to March each year, and it is one of the main pests in tea gardens in early spring, so we must pay special attention during this time. This pest mainly bites and eats the leaves and tender shoots of witch hazel, or strips and eats the bark of branches and the skin of fruit, causing parts of the tea bush to become bare.

Control method: For this witch hazel pest and disease, we can promptly remove the insect bags and destroy them, or use 80% dichlorvos emulsifiable concentrate at 1200 times dilution to spray and kill the pests directly.

Tortricid moth

The tortricid moth is a very small pest, with adults generally about 10mm in body length and a wingspan of 23—30mm. This pest lurks on the leaf tips of witch hazel during its larval stage, then gradually feeds on the epidermis and mesophyll, causing many holes to appear in the leaves, which greatly affects the ornamental value.

Control method: When dealing with this witch hazel pest and disease, we can use 75% phoxim at 1000 times dilution or 90% trichlorfon technical material at 1000 times dilution to spray and kill it.

3. Witch hazel pest and disease control (diseases)

Anthracnose

Anthracnose mainly occurs on the leaves of witch hazel. In the early stage of the disease, many water-soaked yellow lesions appear on the leaves. After expanding, they become oval to irregular brown or yellow-brown lesions. In the later stage, the lesions join together, causing the leaves to become dry and withered, and producing small black dots arranged in concentric rings.

Control method: This disease mainly occurs because the growing environment has poor ventilation, so we must keep the environment well ventilated when cultivating it. As for treating this disease, we can use 65% zineb wettable powder at 600 times dilution to spray the affected areas, generally once a week, and it can be cured after 3-4 times.

Leaf spot disease

Leaf spot disease is a disease with an extremely wide range of damage, harmful to many plants, and witch hazel is one of them. When it suffers from this disease, many irregular brown lesions appear on the leaves, and over time they gradually spread, eventually causing the plant to gradually wither and die.

Control method: When dealing with this witch hazel pest and disease, we must start suppressing it in the early stage. We can use 20% silylazole · prochloraz at 1000 times dilution to spray the diseased plants, generally once every 7-10 days, and it can be cured after about 3 times.

Powdery mildew

Powdery mildew is a disease caused by fungi. When it occurs, many white powdery mold spots appear on the leaves of witch hazel, and over time they gradually cover the entire leaf, affecting photosynthesis, disrupting normal metabolism, and thus causing premature aging.

Control method: For this witch hazel pest and disease, we can choose to use 2% antimycin aqueous solution at 200 times dilution or 15% triadimefon at 1000 times dilution for treatment, generally once every 3-6 days, and it can be cured after 3-6 consecutive times.

What to do when globe amaranth gets infested with pests: globe amaranth pest and disease control / 2 pests and 3 diseases

During the growth of globe amaranth, the most unwelcome thing is pests and diseases. These problems are extremely harmful to the plant, not only affecting its ornamental value, but in severe cases also causing the plant to wither and die. So what should you do when globe amaranth gets infested with pests? And how should globe amaranth pest and disease control be done? Let's take a look below.

1. What to do when globe amaranth gets infested with pests: find the cause

To know what to do when globe amaranth gets infested with pests, we first need to understand what kind of pest it is, so that we can deal with it in a targeted way, because the treatment methods for each pest and disease are different. The specific details are introduced below, and friends troubled by this can take a look.

2. Globe amaranth pest and disease control (pests)

1. Scale insects

Scale insects prefer to grow in warm and humid environments. If the growing environment is too dry, scale insects are very likely to appear. They mainly threaten the branches, leaves and fruit of globe amaranth, causing the leaves to gradually turn yellow, the tree vigor to gradually decline, and finally a withering phenomenon to appear.

Control method: When dealing with this globe amaranth pest and disease, we can use 255 phosmet at 1000 times dilution or 2.5% deltamethrin at 3000 times dilution to spray and kill them directly.

2. Aphids

Aphids are a type of phytophagous insect that mainly sucks the sap from the leaves of globe amaranth, causing the leaves to gradually lose their green color. In severe cases, it also causes the leaves to continuously shrink and fall off, and affects flowering.

Control method: For this globe amaranth pest and disease, we can directly use 50% malathion emulsion at 1000 times dilution or 50% pirimicarb wettable powder at 3000 times dilution to spray and kill them.

3. Globe amaranth pest and disease control (diseases)

1. Powdery mildew

Powdery mildew is a disease that can appear in many plants, and globe amaranth is no exception. When it occurs, many white powdery lesions appear on its leaves, and over time they gradually cover the entire leaf, so that the plant cannot carry out photosynthesis and gradually withers and dies.

Control method: When dealing with this globe amaranth pest and disease, we can use 70% thiophanate-methyl wettable powder at 1000 times dilution to spray the diseased plants, generally once every half month, and it can be cured after about two times.

2. Damping-off

This disease mainly attacks the root and stem area of globe amaranth, causing the root and stem area to turn black or constrict, and in humid environments white mold-like substances also appear. Generally, when a plant is attacked by this disease, its leaves wilt within a few days, and over time the entire plant gradually dies.

Control method: For this globe amaranth pest and disease, we can use 20% tolclofos-methyl emulsifiable concentrate at 1200 times dilution to spray and control the diseased plants, generally once every 7-10 days, and it can be cured after 2-3 times.

3. Brown spot disease

Brown spot disease is also called leaf spot disease. It is a disease caused by fungi. This disease mainly threatens the leaves of the plant. When it occurs, many brown lesions appear on the leaves, and over time they gradually spread, eventually causing the plant to wither and die.

Control method: When dealing with this globe amaranth pest and disease, we can use 25% carbendazim wettable powder at 300-600 times dilution for control, generally applying once every 10 days or so, and it can be cured after 1-2 times.

What to do when holly gets infested with pests: holly pest and disease control / 2 pests and 2 diseases

During the growth of holly, the most unwelcome thing is pests and diseases. These problems are extremely harmful to it, not only affecting its ornamental value, but in severe cases also causing it to wither and die. So what should you do when holly gets infested with pests? How should holly pest and disease control be done? Let's take a look below.

1. What to do when holly gets infested with pests: find the cause

To know what to do when holly gets infested with pests, we first need to find the cause and know what kind of pest it is, so that we can deal with it in a targeted way, because the control methods for each pest and disease are different. The specific details are introduced below, and friends troubled by this can take a look.

2. Holly pest and disease control (pests)

1. Aphids

Aphids are a pest that can appear in many plants, and holly is no exception. They mainly use nymphs to suck the sap from leaves, stems, tender heads and tender ears, causing the plant to lose a large amount of nutrients and finally showing a withering phenomenon.

Control method: For aphids, this holly pest and disease, the most direct method is to use chemicals to spray and kill them. In terms of chemicals, we can choose 50% pirimicarb wettable powder at 3000 times dilution.

2. Scale insects

Scale insects are an extremely harmful pest, mainly threatening the leaves, branches and fruit of holly. They gather on branches, leaves and fruit, causing leaf yellowing, branch tip withering, tree vigor decline and other phenomena, and they can also trigger sooty mold.

Control method: For this holly pest and disease, we can use an insecticide made by mixing 40.7% chlorpyrifos emulsifiable concentrate and 80% dichlorvos emulsifiable concentrate in a 1:1 ratio at 1000-1500 times dilution to spray and kill them.

3. Holly pest and disease control (diseases)

1. Leaf spot disease

Leaf spot disease is a disease that can appear in many plants, and holly is no exception. The peak period for this disease is spring and autumn each year, so everyone must pay special attention during these two periods. When this disease occurs, many irregular brown lesions appear on the leaves of holly, and over time they gradually spread, eventually causing the plant to wither and die.

Control method: When dealing with this holly pest and disease, we can use 80% mancozeb at 400-600 times dilution or 50% thiophanate at 1000 times dilution to spray it, generally once every 7-10 days, and it can be cured after 1-2 times.

2. Bud rot

This disease mainly threatens the young buds and tender leaves of holly. When it first occurs, the unopened leaves first wither, turning brown, and then droop. The pathogen spreads from the base of the tender leaves to the young tissues of the buds, causing the young buds to wither and rot, the plant to stop growing, and in severe cases the entire plant to die.

Control method: When dealing with this holly pest and disease, we can use 80% mancozeb wettable powder at 500 times dilution to spray the diseased plants, generally once every 10 days, and it can be cured after 3-4 times.