introduction

Powdery mildew is a fungal disease that frequently affects many crops such as cucumbers, strawberries, and melons. It can occur during the entire growth phase of the plants.

 Once infected, seedlings become infected at the seedling stage, resulting in poor seedling quality and making survival after transplanting difficult.

 

The contamination significantly impairs the quality of the fruit and thus reduces the yield. The prevention and control of powdery mildew not only requires a great deal of manpower and materials, but above all, it is difficult to eradicate and has to be sprayed frequently.

how do get rid of white powdery mildew on cucumber plants?

This disease mainly affects young parts such as leaves, petioles, sensitive stems, buds, and petals.

In addition, powdery mildew bacteria tend to develop resistance, making it difficult to control powdery mildew in some crops and causing headaches for growers.

In high temperatures, poor light, and a lack of ventilation, powdery mildew tends to develop the mark.

Subtle infestations can occur during the development phase of the plants and mainly damage the shoots, but also the natural products and stems.

 In the early stages of infection, white, fine spots appear on the back of the bald patches. As the disease progresses, the fine white spots slowly increase and different spots become connected and cover the entire leaf.

The leaves are folded and have the shape of a spoon. In addition to the dark spots of varying size, white, powdery spots also appear on the front of the leaves, which gradually spread and gradually become large spots with indistinct edges.

 

As the infection progresses, the white spots continuously turn into dark spots. Under appropriate natural conditions, natural products, stems, flowers, etc. can be infected.

Unhealthy clearcuts affect the development and improvement of plants. Contaminated natural products develop gradually and end up being difficult natural products that lose their edible esteem.

1. Prevention and treatment as soon as possible.

A colony of fine microscopic mold organisms can grow and attack the leaves, and the mycelium can develop on the leaf surface within 1 day, after 5 days, white mycelial lesions are formed at the disease site, and the lesions develop, and the meristem and meristem deliver them.

Fly after 7 days of aeration. At this time, the number of organisms increases rapidly, and the plague of diseases is additionally rapid. In this way, it is extremely important to recognize and combat the disease at an early stage.

The appearance of diseases is often a process of accumulation of the number of my cogenes along with the growth of the plant.

 Measures should therefore be taken at the beginning of each growing season to keep the number of pathogens at a minimum level.

Even when powdery mildew is present, it is not difficult to control. The most foolish control strategy is to wait until powdery mildew has already appeared to find the so-called special agent.

2. Choose the right medicine.

Choose the right fungicide according to the characteristics of the plant growth and the stage of the disease.

Of the triazole fungicides, difenoconazole, myclobutanil, and propiconazole are well suited for the prevention and treatment of powdery mildew.

 However, we should also make sure that they’re safe for the plants and don’t cause resistance. It’s best to use them together with methoxyacrylate fungicides Or use other fungicides.

 

3. Increase the amount of water sprayed.

The tiny spores of powdery mildew contain a lot of water. If the air is very humid, they soak up even more water, burst open, and die. 

So if you use a little spray and a lot of water and spray all the leaves, you can control the pests better. Of course, it should be noted that the relative humidity in the shed is high and a higher amount of spray water can cause other diseases.

In organic farming, mix skimmed milk with water and spray the plants every 7 days when the disease first appears. If necessary, you can also spray 2-3 times. It is also very helpful in prevention and control.

It is difficult to avoid

1. Under the right conditions, powdery mildew bacteria multiply in large quantities, are widespread, and cannot be stopped easily.
2. Due to the long-term use of conventional agents, the mildew bacteria develop resistance and the control effect diminishes.
3. The water used for spraying medicines is too alkaline, which impairs the effectiveness of new medicines, especially those containing kresoxim-methyl.
4. The spray equipment is not suitable, and the spray technique is not high, resulting in a large loss of liquid medicine so that the dose required for treatment cannot be achieved under the normal spray volume.

 

conculsion

According to the above, try to find the cause of powdery mildew and the ways to treat it Do not leave diseased plant leaves and stems in the garbage bin, as fungal spores can survive for a long time. Do not allow dead plant material to overwinter in the garden, as it will infect young plants in the spring.