This article is a list of diseases of red clover (Trifolium pratense).
| Fungal diseases | |
|---|---|
| Anther mold | Botrytis anthophila Sclerotinia spermophila [teleomorph] |
| Black patch | Rhizoctonia leguminicola |
| Black root rot | Thielaviopsis basicola Chalara elegans [synanamorph] |
| Common leaf spot | Pseudopeziza trifolii |
| Curvularia leaf blight | Curvularia trifolii |
| Cylindrocarpon root rot | Cylindrocarpon magnusianum Cylindrocarpon ehrenbergii Nectria ramulariae [teleomorph] |
| Downy mildew | Peronospora trifoliorum |
| Fusarium root rot | Fusarium oxysporum Fusarium solani Nectria haematococca [teleomorph] Fusarium spp. |
| Leaf gall | Physoderma trifolii Urophlyctis trifolii |
| Mid-vein spot | Mycosphaerella carinthiaca |
| Mycoleptodiscus crown and root rot | Mycoleptodiscus terrestris Leptodiscus terrestris |
| Northern anthracnose | Aureobasidium caulivorum Kabatiella caulivora |
| Powdery mildew | Erysiphe polygoni |
| Rust | Uromyces trifolii-repentis var. fallens |
| Sclerotinia crown and root rot | Sclerotinia trifoliorum[1] |
| Seed mold | Alternaria alternata |
| Seed rot and damping-off | Pythium debaryanum |
| Sooty blotch | Cymadothea trifolii Polythrincium trifolii [anamorph] |
| Southern anthracnose | Colletotrichum trifolii |
| Southern blight | Sclerotium rolfsii Athelia rolfsii [teleomorph] |
| Spring black stem and leaf spot | Phoma pinodella Phoma trifolii |
| Stagonospora leaf spot and root rot | Stagonospora recedens |
| Summer black stem | Cercospora zebrina |
| Target spot (ring spot) | Stemphylium sarciniforme Stemphylium botryosum Pleospora tarda [teleomorph] |
| Violet root rot | Helicobasidium brebissonii Rhizoctonia crocorum [anamorph] |
| Winter rot | Coprinus psychromorbidus Phoma sclerotioides Plenodomus meliloti Typhula spp. |
| Nematodes, parasitic | |
|---|---|
| Bulb and stem | Ditylenchus dipsaci |
| Cyst | Heterodera trifolii |
| Dagger | Xiphinema americanum |
| Lance | Hoplolaimus spp. |
| Lesion | Pratylenchus spp. Pratylenchus penetrans |
| Pin | Paratylenchus spp. |
| Ring | Criconemella spp. |
| Root-knot | Meloidogyne spp. Meloidogyne arenaria Meloidogyne hapla Meloidogyne incognita Meloidogyne javanica |
| Spiral | Helicotylenchus spp. |
| Viral diseases | |
|---|---|
| Dwarf | |
| Mosaic disease | Alfalfa mosaic virus (AMV) |
| Alsike clover mosaic virus | |
| Clover mild mosaic virus | |
| Common pea mosaic virus | |
| Croatian clover mosaic potyvirus | |
| White clover mosaic virus | Red clover virus Red clover virus 1 & 2 |
| Red clover vein mosaic | Red clover vein mosaic virus (RCVMV) |
| Ring spot | |
| Streak | |
| Wilt | |
| Witches' broom | Witches' broom virus |
| Yellow dwarf | |