Use fine mesh or netting to protect crops like tomatoes and peppers, and to help deter the beet leafhoppers from feeding on the plants and infecting them with curly top virus. Leafhoppers feed by sucking sap out of plants, injecting saliva as they feed. Besides the damage that the leafhoppers do themselves (mutated leaves holes and sap sucking)my main concearn is my plnts being infected by a virus . Damage Caused by Leafhoppers. Monitor fields for populations and correctly identify the leafhopper. Remove sugar beets, as they are another preferred host of the beet leafhopper. There are many leafhoppers that do not damage potato. ... Stink bugs cause spots and internal damage to tomato fruit by their feeding. Common brown leafhopper. Direct feeding by beet leafhopper causes relatively minor damage. Pest description and crop damage Adult western grape leafhoppers (WGLH) and Virginia creeper leafhoppers (VCLH) are about 0.12 inch long and are pale yellow with reddish and dark brown markings. The row covers are a physical barrier so the bug can’t get to your plant. The leafhopper kills tomato plants by biting your plant, giving it Curly Top Virus (CTV) which is fatal to your tomato plants. Source: Doug Beckers. Tomato Gardens. Potato leafhoppers feed on the underside of the leaf by sucking juices from the plant. They release an offensive odor when handled. Nymphs do not have wings and are generally lighter in color than adults. Depending on species they may be green, brown or yellow in color and often have colorful markings. It is a green, slender insect with bristlelike antennae and rows of spines along its hind legs. Leafhoppers are easily controlled with insecticide applications. So far the leaf hoppers have been mainly tageting my sweet 100 tomato (only tomato planted out) and my magnus coneflower. Beet curly top virus is an extremely destructive disease of sugarbeet as well as other crops (e.g., tomatoes). DAMAGE. Leafhoppers damage plants because they suck the fluid out after piercing the outer layer. The enzymes in its saliva interact with the plant, resulting in abnormal cell growth and blockage of water and nutrient movement in leaves. Virginia creeper leafhopper (Erythroneura ziczac) Western grape leafhopper (Erythroneura elegantula). A threshold for treatment is one nymph per 10 leaves. The potato leafhopper is a potential pest of citrus in some areas, especially in groves near tomato fields, cotton fields, or pastures in the San Joaquin Valley. Damage Management Description of the Pest. Tomato Gardening Guru; ... Leafhopper adults (1/4 inch long) are slender, wedge-shaped insects that fly or disperse rapidly when disturbed. Most leafhopper species do not cause noticeable injury as they feed, but potato leafhopper is different. You’ll often see a light speckling on the surface of foliage, which is the damage caused by piercing and sucking. While it came from Australia, the common brown leafhopper is now a pest worldwide. Includes. VCLH can be distinguished from WGLH by red spots on the back behind the eyes. Control weeds around the tomato patch, as these insects overwinter in such areas. The leafhopper likes dry, hot, windy conditions (which we have now) so I’m sure it’s still around. They cause a characteristic yellowing or browning of affected tissue known as “hopperburn.” However, this damage is rarely seen on tomatoes. Use row covers to protect tomato plants from the leafhopper. Potato leafhopper damage. However, while it does do damage from feeding, what it’s known for is the long list of damaging diseases it carries. 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