This article is a list of diseases of Persian Walnuts (Juglans regia).
Bacterial diseases
edit| Bacterial diseases | |
|---|---|
| Crown gall | Agrobacterium tumefaciens |
| Deep bark canker | Erwinia rubrifaciens |
| Shallow bark canker | Erwinia (now Brenneria) nigrifluens |
| Walnut blight | Xanthomonas campestris pv. juglandis |
Fungal diseases
edit| Fungal diseases | |
|---|---|
| Anthracnose |
Gnomonia leptostyla |
| Armillaria root rot | Armillaria mellea |
| Branch wilt | Hendersonula toruloidea |
| Cotton root rot | |
| Cylindrocarpon dieback |
Nectria radicicola |
| Downy leaf spot | Microstroma juglandis |
| Melanconium dieback |
Melanconis carthusiana |
| Phytophthora crown and root rot |
Phytophthora spp. |
| Phytophthora trunk and branch canker |
Phytophthora cactorum |
Nematodes, parasitic
edit| Nematodes, parasitic | |
|---|---|
| Pin nematode | Paratylenchus spp. |
| Ring nematode | Mesocriconema xenoplax |
| Root lesion nematode | Pratylenchus vulnus |
| Root knot nematode | Meloidogyne spp. |
Viral diseases
edit| Viral diseases | |
|---|---|
| Blackline | genus Nepovirus, Cherry leaf roll virus (CLRV) |
| Walnut ring spot | genus Nepovirus, Cherry leaf roll virus (CLRV) |
Miscellaneous diseases and disorders
edit| Miscellaneous diseases and disorders | |
|---|---|
| Alternaria leaf spot | Alternaria alternata |
| Apoplexy | Unknown |
| Ascochyta ring spot | Ascochyta juglandis |
| Mesophyll collapse | High temperature and low humidity |
| Oilless nuts | Unknown |
| Pistillate flower abscission | Excess pollen |
| Stem/trunk canker |
Fusarium solani |
References
edit- ^ Mazzaglia, A. "Bark Cankers on English Walnut: An Emerging Disease". Acta Horticulturae. International Society for Horticultural Science. Archived from the original on 2019-07-09.