Common pests and diseases affecting cucumber crops in Nigeria

May 13, 2024

Cucumber farming involves the cultivation of cucumbers with the aim of harvesting and marketing the cucumber fruits for consumption or for sales to the public. Cucumber farming starts from soil preparation to the marketing of the harvested cucumber fruits.

Cucumbers like other crops are susceptible to various pests and diseases that can significantly impact yield and quality if not properly managed. The tropical nature of Nigeria makes it a place where numerous pests and diseases related to cucumber crop can thrive.

cucumber farming in nigeria

Pests Affecting Cucumber Crops

Aphids (Aphidoidea)

Aphids are small, soft-bodied insects that suck sap from cucumber plants, causing stunted growth, yellowing of leaves, and distortion of plant parts. They also serve as vectors for viral diseases. In Nigeria, common aphid species affecting cucumber crops include the green peach aphid (Myzus persicae) and the melon aphid (Aphis gossypii).

Spider Mites (Tetranychidae)

Spider mites are tiny arachnids that feed on cucumber plant sap, causing stippling, yellowing, and eventually, leaf drop. Hot and dry conditions prevalent in many parts of Nigeria create favorable environments for spider mite infestations.

Whiteflies (Aleyrodidae)

Whiteflies are small, winged insects that feed on the undersides of cucumber leaves, sucking sap and causing leaf yellowing, wilting, and reduced photosynthesis. They also excrete honeydew, promoting the growth of sooty mold.

Thrips (Thripidae)

Thrips are slender insects that feed on cucumber leaves, flowers, and fruits, causing silvering, distortion, and scarring. They can also transmit viral diseases, such as tomato spotted wilt virus (TSWV), which affects cucumber plants in Nigeria.

Cutworms and Caterpillars

Cutworms and caterpillars are common pests that feed on cucumber seedlings and young plants, causing cut stems and defoliation. Species such as the cotton bollworm (Helicoverpa armigera) and the armyworm (Spodoptera spp.) are prevalent in Nigerian cucumber farms.

Diseases Affecting Cucumber Crops

Powdery Mildew (Podosphaera xanthii)

Powdery mildew is a fungal disease characterized by white powdery growth on the upper surfaces of cucumber leaves. It thrives in warm, humid conditions and can lead to leaf yellowing, stunting, and premature defoliation, reducing photosynthesis and yield.

Downy Mildew (Pseudoperonospora cubensis)

Downy mildew is another fungal disease that affects cucumber plants, causing angular yellow lesions on the upper surfaces of leaves and grayish-white fungal growth on the undersides. It spreads rapidly under cool, moist conditions, leading to defoliation and yield loss.

Bacterial Wilt (Erwinia tracheiphila)

Bacterial wilt is a destructive disease affecting cucumbers in Nigeria, characterized by wilting, yellowing, and eventual collapse of plants. It is caused by the bacterium Erwinia tracheiphila, which is spread by cucumber beetles and infected seeds.

Cucumber Mosaic Virus (CMV)

CMV is a viral disease transmitted by aphids, thrips, and contaminated farming equipment. Infected cucumber plants exhibit mosaic patterns, stunting, leaf distortion, and reduced fruit quality. CMV can lead to significant yield losses in Nigerian cucumber farms.

Anthracnose (Colletotrichum orbiculare)

Anthracnose is a fungal disease that affects cucumber fruits, causing sunken lesions with dark borders. It thrives in warm, humid conditions and can lead to fruit rot and decay, reducing marketability and shelf life.

How to Control Cucumber Pests and Diseases

Cultural Practices

Implementing good agricultural practices such as crop rotation, proper spacing, and timely irrigation can help reduce pest and disease pressure on cucumber crops.

Biological Control

Introducing natural enemies such as predatory insects (e.g., ladybugs, lacewings) and parasitic wasps can help suppress pest populations in cucumber fields.

Chemical Control

Insecticides, fungicides, and bactericides can be used judiciously to manage pest and disease outbreaks in cucumber crops. However, it's essential to follow label instructions and adopt integrated pest management (IPM) strategies to minimize environmental impacts and pesticide resistance.

Resistant Varieties

Planting cucumber varieties with resistance or tolerance to specific pests and diseases can provide an effective and sustainable management option for Nigerian farmers.


Removing and destroying crop residues, weeds, and infected plant materials can help prevent the buildup and spread of pests and diseases in cucumber fields.

Do you have problems of pests and diseases affecting your cucumber crop in Nigeria? If yes, why not cntact us on 08066437109 or

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