Pests and diseases of cowpea and their control methods The cowpea as a crop is just like soya beans. This type of crop known as cowpea is useful in many ways to man and other farm animals. Cowpea is an example of a leguminous crop. It possesses a taproot system Pest of Cowpea
Cowpeas, also known as black-eyed peas or southern peas, are susceptible to various pests and diseases that can damage plants and reduce yields. Effective management strategies are essential for maintaining healthy cowpea crops. Here are some common pests and diseases of cowpeas, along with control methods:
Detailed list of Pests and diseases of cowpea
Common Cowpea Pests:
- Aphids:
- Damage: Aphids feed on cowpea plants, causing yellowing, curling leaves, and stunted growth.
- Control:
- Use insecticidal soap or neem oil.
- Introduce beneficial insects like ladybugs and lacewings.
- Promote natural predators through habitat diversity.
- Cowpea Weevils (Callosobruchus spp.):
- Damage: Cowpea weevils lay eggs on cowpea seeds, and the larvae tunnel into the seeds, rendering them inedible.
- Control:
- Store cowpea seeds in airtight containers.
- Freeze-infested seeds to kill the larvae.
- Use biological control agents like parasitic wasps.
- Spider Mites:
- Damage: Spider mites suck plant sap, leading to stippling, yellowing leaves, and reduced photosynthesis.
- Control:
- Increase humidity by using overhead irrigation.
- Apply insecticidal soap or neem oil.
- Release predatory mites to control spider mite populations.
- Thrips:
- Damage: Thrips feed on cowpea leaves, causing stippling, distortion, and reduced plant growth.
- Control:
- Monitor thrip populations and use sticky traps.
- Apply insecticidal soap or neem oil when necessary.
- Encourage natural predators like minute pirate bugs and predatory mites.
Common Cowpea Diseases:
- Cowpea Aphid-Borne Mosaic Virus (CABMV):
- Symptoms: Mottled and distorted leaves, reduced plant growth, and yield loss.
- Control:
- Plant virus-resistant cowpea varieties.
- Control aphid populations to reduce virus transmission.
- Cowpea Bacterial Blight (Xanthomonas axonopodis pv. vignicola):
- Symptoms: Water-soaked lesions on leaves, pods, and stems, leading to plant wilting and death.
- Control:
- Plant disease-resistant cowpea varieties.
- Practice crop rotation.
- Apply copper-based fungicides.
- Rust (Uromyces vignae):
- Symptoms: Orange to brown pustules on leaves, reducing photosynthesis and yield.
- Control:
- Plant rust-resistant cowpea varieties.
- Use fungicides if necessary.
- Remove and destroy infected plant material.
- Powdery Mildew (Erysiphe polygoni):
- Symptoms: White powdery growth on leaves, leading to leaf distortion and reduced photosynthesis.
- Control:
- Provide good air circulation by spacing plants appropriately.
- Apply fungicides when necessary.
- Plant mildew-resistant cowpea varieties.
General Pest and Disease Management Strategies:
- Implement integrated pest management (IPM) practices, including regular scouting and monitoring.
- Choose disease-resistant cowpea varieties when available.
- Rotate crops with non-host plants to break pest and disease cycles.
- Promote natural predators and beneficial insects through habitat management.
- Use proper sanitation practices, including removing and destroying infected plant material.
Early detection and intervention are essential for effective pest and disease management in cowpea crops.
Consult with local agricultural extension services or experts for region-specific advice on pest and disease control measures tailored to your cowpea cultivation.
Pod borers: Adults pierce or bore holes into fruits and stems and may inject toxic saliva. How to Control pod borers of cowpea: Spray with insecticide Bean beetle of cowpea (Callosobruchus spp): This is a field-to-store pest.
Adults and nymphs of bean beetle of cowpea bore holes into seeds, feed on them and turn them to powder, thereby reducing the quality and market value.
How to Control bean beetle Pests of cowpea:
one great Pests and disease of cowpeas is the bean beetle. the bean beetle attacks matured pods and so the following measures should be applied in tackling this menace (i) Early harvesting of the cowpea pods
(ii) Fumigation of containers or stores containing the cowpea bean with fumigants like phostoxin tablets Leaf Hoppers of cowpea: They eat up the leaves, thereby causing low yield of crops. How to Control leaf hoppers of cowpea: Spray plants with insecticides
Pests and diseases of cowpea and control methods
Cowpea mosaic disease: (1) Cowpea mosaic disease is a viral disease which is transmitted by aphid or thrip. It causes stunting, reduces pod size and causes premature dropping of flowers.
How to Control Cowpea Mosaic disease: (i) Use resistant varieties of cowpea when planting (ii) Control insect vectors by spraying with pesticides
(iii) Remove and burn infected cowpea plants Bacterial blight: Bacterial blight is caused by a bacterium which is spread by water.
Infected leaves produce water-soaked spots which later enlarge and turn brown
How to Control Bacterial blight of cowpea :
bacteria blight is a type of Pests and disease of cowpeas and the following methods should be used to stop it\’s spread(i) Use resistant varieties
(ii) Use clean seeds when planting Nematode disease of cowpea: Nematode disease of cowpeas is caused by nematode transmitted through soil.
It causes twisting and rolling of roots. How to Control Nematode disease of cowpea: (i) Use resistant varieties of cowpea (ii) Practice good cultural operations READ HERE (iii) Treat soil with nematicide
Damping-off disease: This disease is caused by a fungus (Phytophthora spp). It is transmitted through the hyphae in the soil. It results in the destruction of seedlings in the soil
HOW to Control Damping-off disease of cowpea:
(i) Dress seeds with fungicides (ii) Practice crop rotation (iii) Grow resistant varieties (iv) Remove infected plants Thank you for visiting us today. You can leave us a message if you have any
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Originally posted 2023-10-03 13:30:09.