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| Foliar nematodes | ||||
| IPM scouting in herbaceous perennials > foliar nematodes | ||||
| Foliar nematodes are extremely small – approximately 0.8 mm long – colorless roundworms. They need a film of moisture to move around. Foliar nematodes feed within the plant’s spongy mesophyll and spend most of the growing season in leaves. The nematodes cannot move across main leaf veins while inside the leaf, so infected areas of leaves are bounded by the veins. Foliar nematodes may overwinter on debris and in the crown of plant buds. They may infect a number of herbaceous perennials, including hosta, astilbe and delphinium. Management: Dispose of all infected plants and plant material. Avoid splashing water on susceptible plants. Selectively remove leaves from plants just expressing symptoms of foliar nematode damage. Insecticides with translaminar properties may be useful in controlling foliar nematodes. |
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| This information was developed from A Pocket Guide for IPM Scouting in Herbaceous Perennials by Jan Byrne and Raymond A. Cloyd. Purchase this in a pocket-sized guide for reference in the orchard from MSU Extension (publication E-2981). | ||||
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