How to deal with pests on saffron crocus? Pest and disease control and pesticide eradication methods

Growing Techniques Jan 1, 1970 0 views

Saffron crocus is a plant with extremely high medicinal value, but no matter how good its medicinal effects are, if pests and diseases appear, they will still affect the overall medicinal properties, and in severe cases it may even become worthless and completely useless. So how should pests on saffron crocus be dealt with? The most direct method is pesticide eradication.

I. How to deal with pests on saffron crocus / pesticide eradication

If pests appear on your saffron crocus, then there must have been problems with your usual cultivation methods, because if the methods were correct, this phenomenon would not occur. There is knowledge on this in the article on saffron crocus cultivation methods, so I won't go into too much detail here. As for how to deal with pests on saffron crocus, using pesticides is the most direct and effective method; you just need to use different pesticides according to different pests and diseases.

II. Saffron crocus pest and disease control / 3 pests and 2 diseases

1. Stem borer pest

The stem borer is a pest that many plants face. This pest occurs mostly in autumn and mainly harms the flower clusters of saffron crocus. Once the flower clusters are threatened by this pest, they will turn yellow, and if it is not dealt with for a long time, the flowers will wilt and gradually die.

Control method: When this pest appears, it is best to deal with it as early as possible, because the longer it drags on, the greater the harm to the flowers. For the control of this pest, we can generally use methamidophos to spray saffron crocus. Generally, using it 2-3 times can basically eliminate this pest.

2. Root-knot nematode pest

The root-knot nematode is a relatively common pest among saffron crocus pests and diseases. It generally harms the roots of the plant, parasitizing the roots and absorbing nutrients. In the early stage, it causes saffron crocus to grow slowly and reduces yield, and over time it will directly cause the entire plant to die.

Control method: When root-knot nematode damage is discovered, a 50% thiophanate-methyl 1000-fold solution should be used as soon as possible to spray and kill the diseased roots. After spraying, it is best to disinfect the saffron crocus once more to prevent the spread of the pest.

3. Aphid pest

This pest generally harms the leaves of saffron crocus, affecting the plant's photosynthesis, which causes the flowers to droop, and in severe cases directly causes the entire plant to wilt, greatly affecting its ornamental value.

Control method: When this pest is discovered in the early stage, it can be directly scraped off with a toothpick. If it is severe, a 40% dimethoate emulsifiable concentrate pesticide is needed for spraying. Generally, spraying 2-3 times can completely kill this pest.

4. Root rot disease

This disease first invades and contaminates the diseased roots, then gradually spreads to all parts of the saffron crocus, finally causing the entire plant to turn yellow and then gradually wilt. This disease can appear at any stage of the plant's growth.

Control method: If this disease is found, the diseased plant should be directly removed, and then quicklime should be applied into the planting hole of the diseased plant for disinfection to prevent further spread.

5. Sclerotinia disease

Sclerotinia mainly harms the seedlings and corms of saffron crocus. This disease generally occurs mostly in summer, and in severe cases may cause the corms to rot.

Control method: When this disease appears, the infected corms should be removed promptly, and then disinfection should be carried out to prevent the spread of the pathogen. Alternatively, a 0% thiophanate wettable powder 500-fold solution can be used directly for spraying.

How to deal with pests on gladiolus, gladiolus pest and disease control / 3 diseases and 1 pest

The reason gladiolus is so popular is related to the extremely high ornamental value of its flowers. However, when flower enthusiasts grow it, improper care can cause pests to appear on the gladiolus plants, not only causing the leaves to turn yellow and the flowers to be fewer, but in severe cases even causing the entire plant to die. Therefore, we need to find ways to prevent this from happening. So how should pests on gladiolus be dealt with? Let's look at the gladiolus pest and disease control methods together.

How to deal with pests on gladiolus

Thrips: This is the most common pest on gladiolus plants. It generally hides by day and comes out at night. During the day it hides between the leaf axils, and on nights with weaker light or on cloudy and rainy days it comes out to harm the leaves, feeding on leaves, rhizomes, and flowers, causing the leaves to change from green to yellow, white-gray spots to appear on the corolla, and the petals to finally curl up.

Control method: For thrips control, attention should be paid to fertilization in gladiolus cultivation methods. Applying more phosphorus and potassium fertilizer can improve disease resistance. When the disease occurs, a 40% dimethoate emulsifiable concentrate 1000-fold solution should be used for spraying.

Gladiolus pest and disease control methods

1. Mosaic disease

The main affected parts are the leaves and flowers. At first, round spots or angular spots appear on the leaves, then they expand into polygonal shapes and the color turns brown. After the leaves are affected, they turn yellow and curl, the plant becomes shorter, the flower spikes also become shorter, and the flowers are difficult to bloom.

Control method: When planting, choose robust corms that do not contain the virus. They can be disinfected with a potassium permanganate solution. After the disease occurs, promptly remove the diseased corms, then spray the leaf surfaces with a 58% mancozeb wettable powder 500-fold solution or 75% chlorothalonil wettable powder.

2. Leaf spot disease

Although the main affected part is the leaves, if it is not dealt with in time, it will infect the corms. Leaf spot disease causes brown lesions to appear on the leaf surface of gladiolus. The spots will continuously expand and the color will continuously deepen, and finally the entire leaf will wilt. If the corms are infected, it will affect the reproduction and growth of gladiolus.

Control method: As with mosaic disease, in gladiolus pest and disease control, the preventive measure for leaf spot disease is also to choose excellent disease-free varieties for planting. The pesticides used after the disease occurs include a 75% chlorothalonil 800-fold solution or a 65% zineb solution.

3. Fusarium wilt

It mainly harms the corms of gladiolus, and later infects the entire plant. In the early stage of the disease, small reddish-brown spots appear on the corms, then they continuously expand, sink, and shrink, causing the corms to rot. White filamentous bodies may also appear. In severe cases, the plant grows poorly and the flowers produced are also deformed.

Control method: During propagation, the seed corms are best soaked in formalin solution for 2 hours, then rinsed clean with 40-degree warm water, dried in a cool place, and refrigerated. When sowing, disinfection is also needed again, for example, soaking in a 500-fold carbendazim solution, which can prevent the occurrence of fusarium wilt.

What to do about pests on Chinese snowball viburnum, pest and disease control for Chinese snowball viburnum / 2 pests and 2 diseases / pesticide spraying

In the process of cultivating Chinese snowball viburnum, the last thing people want to encounter is problems such as pests and diseases. These problems are extremely harmful to the plant, and if not prevented in time, they can easily cause the plant to wither and die. What should be done about pests on Chinese snowball viburnum? How should pest and disease control for Chinese snowball viburnum be carried out? Below, I will guide everyone to understand this.

I. What to do about pests on Chinese snowball viburnum

If you want to know what to do about pests on Chinese snowball viburnum, we first need to understand what kind of pest it is, so that we can target it specifically, because the control methods for each pest are different. This point is introduced in detail in the pest and disease control section for Chinese snowball viburnum below. Let's take a look together.

II. Pest and disease control for Chinese snowball viburnum

Pests

1. Scale insects

Scale insects are a relatively common pest among the pests and diseases of Chinese snowball viburnum. This pest mainly feeds on the sap of Chinese snowball viburnum, gradually sucking the sap from within, causing a large loss of nutrients in the plant, which leads to yellowing and wilting.

Control method: We must eliminate this pest in time, because if it drags on, the impact on the plant will be very great. For this pest, we can use a 2.5% deltamethrin 3000-fold solution for direct spraying and killing.

2. Aphids

Aphids are a pest that exists on many plants, and Chinese snowball viburnum is no exception. This pest mainly harms the stems and leaves of Chinese snowball viburnum. It gradually sucks the sap within, causing Chinese snowball viburnum to shrink and die. It can be said to be one of the most harmful pests among the pests and diseases of Chinese snowball viburnum.

Control method: When controlling aphids, we can use a 50% pirimicarb wettable powder 3000-fold solution for direct spraying and killing. After spraying, simply disinfect the plant.

Diseases

1. Black spot disease

Black spot disease is a disease caused by fungi and is one of the more frequently occurring pests and diseases of Chinese snowball viburnum. When this disease appears, many irregular black spots appear on the leaves of Chinese snowball viburnum, and over time they gradually spread, finally causing premature aging of the plant.

Control method: For black spot disease, we can use a carbendazim wettable powder 500-1000-fold solution to spray the diseased plant. Generally, spraying once every 10-15 days, 1-2 times can basically control it.

2. Root rot disease

Among the pests and diseases of Chinese snowball viburnum, root rot is an extremely harmful disease. The peak period of this disease is around March to April each year, so everyone must pay special attention during this time period. When this disease appears, the ability of Chinese snowball viburnum to absorb nutrients and water gradually weakens, finally causing the plant to rot.

Control method: When controlling this disease, we can use a 50% carbendazim 500—600-fold solution to carry out root irrigation treatment on the plant, generally once every 5-7 days, and after 2-3 times it can basically recover.