What is Cucumber Mosaic Virus (CMV) : Symptoms & Preventions Viral Disease: CMV is a plant virus spread primarily by aphids, though it can also be transmitted through seeds and mechanical means. Wide Host Range: While it’s most commonly found in cucumbers and tomatoes, CMV can affect over 1, 200 species of plants, making it a significant threat to many crops. Symptoms of CMV : Mottled Leaves: One of the first signs of CMV is yellow or light green mottling on leaves. This can spread to larger areas, affecting the plant\\'s ability to photosynthesize. Stunted Growth: Infected plants often show signs of stunted or reduced growth, with fewer and smaller fruits. Deformed Fruit: Fruits may appear distorted, smaller, and less flavorful, leading to a significant reduction in yield. How CMV Spreads ? Aphid Transmission: Aphids are the primary vectors of CMV. They spread the virus when they feed on infected plants and then move to healthy plants. Mechanical Transmission: The virus can also spread through contaminated tools, hands, and equipment, especially when working with infected plants. Management and Prevention : Aphid Control: Reduce aphid populations by using natural predators like ladybugs or by applying insecticides when necessary. Resistant Varieties: Plant virus-resistant varieties of susceptible crops such as tomatoes and cucumbers to reduce the impact of CMV. Crop Rotation: Rotate crops to minimize the chance of virus buildup in the soil and reduce the likelihood of aphid infestation. Sanitation Practices: Regularly clean tools and equipment to avoid mechanical transmission of the virus between plants. Remove Infected Plants: Remove and destroy infected plants promptly to prevent the spread of CMV to healthy plants.