Cowpea pests and diseases pictures and treatment

Cowpea pests and diseases pictures and treatment

Cowpea, also known as beans , is a traditional vegetable in China. Due to year-round cultivation, the occurrence of cowpea diseases and pests is becoming increasingly serious. Therefore, disease and pest control has become an important part of cowpea production. Below are some pictures and treatments of cowpea diseases and pests.

1. Cowpea rust

It mainly harms the leaves, small yellow spots appear on the leaves, gradually expanding into round or oval spots, and there is yellow powdery substance on the surface of the spots.

Prevention and control methods : Sulfur·manganese zinc, pyraclostrobin·myclobutanil, amyclobutanil, pyraclostrobin, tebuconazole and other agents can be used for prevention and control.

2. Powdery mildew of cowpea

It mainly harms leaves, but can also damage stems, vines and pods. When the leaves are infected, yellow-brown spots first appear on the back of the leaves, which expand into purple-brown spots covered with a thin layer of white powder. Later, the spots spread along the leaf veins.

Prevention and control methods: Use benzoyl-pyrazole, benzoyl-myclobutanil, trifloxystrobin-tebuconazole, pyrazole-mancozeb and other agents for prevention and control in a timely manner.

3. Cowpea Anthracnose

Anthracnose is a fungal disease that can damage leaves, stems, and pods. The disease is spread through rain and insects, and is more severe during the rainy season. Fields with low-lying terrain, heavy clay soil, and overlying crops are prone to the disease.

Prevention and control methods: You can use prochloraz, propiconazole, isothiocarb, and pyraclostrobin. Combine with potassium dihydrogen fertilizer or amino acid foliar fertilizer for alternating use.

4. Cowpea Thrips

Thrips are one of the most important pests of cowpea and can harm the beans throughout their entire growing period. It mainly harms the heart of the bean, causing the leaves to curl. In severe cases, the heart of the bean will die and the growing point will stop growing.

Prevention and control methods: Use avermectin benzoate, spinetoram, spirotetramat, pyriproxyfen, acetamiprid, etc. for spray control.

5. Cowpea aphids

It mainly harms tender leaves, stems and pods, sucks plant juice, causes leaves to curl and deform, and affects growth.

Prevention and control methods: including using yellow boards to lure and kill aphids; protecting natural enemies such as ladybugs and lacewings; spraying pesticides such as imidacloprid and thiamethoxam in the early stages of the disease.

In general, there are many types of diseases and pests of cowpea. In the process of prevention and control, we must focus on comprehensive prevention and control, start from multiple aspects, and work together to prevent and control cowpea diseases and pests. Especially when using any pesticide for treatment, it is important to follow proper usage instructions and safety guidelines.

<<:  What are the cultivation methods of Phoenix Bamboo?

>>:  How to care for pomegranate trees?

Recommend

Using gourds to grow flowers, great idea

Gourd flower planting 1. First, you need to clean...

What are the cultivation methods and precautions of hibiscus

Hibiscus cultivation method Hibiscus is a relativ...

Time and method of cutting osmanthus

1. Time Osmanthus cuttings are usually taken betw...

When is the best time to take cuttings for roses? How to take cuttings?

1. Cutting time It is best to take cuttings in la...

Can mint be grown in the ground?

Can mint be planted in the ground? Mint can be pl...

Margarite flower cultivation methods and precautions

1. Flower soil To grow marigolds, you can use flo...

When and how to change the soil of Strelitzia reginae

Time to change the soil of Strelitzia reginae The...

How to prune small-leaf gardenia

Time to prune Pruning during the growing season P...

What soil is best for clematis?

The soil of clematis can reflect the growth of it...

How often should I water the black pine?

How often should I water the black pine? Generall...

How to make spider plants bloom

1. Variety selection If you want to grow spider p...

When does the bright grass bloom?

Bright grass flower morphology The entire plant o...