List of Persian walnut diseases

This article is a list of diseases of Persian Walnuts (Juglans regia).

Bacterial diseases

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

Fungal diseases
Anthracnose

Gnomonia leptostyla
Marssonina juglandis [anamorph]

Armillaria root rot Armillaria mellea
Branch wilt Hendersonula toruloidea
Cotton root rot

Phymatotrichopsis omnivora
= Phymatotrichum omnivorum

Cylindrocarpon dieback

Nectria radicicola
Cylindrocarpon destructans [anamorph]
= Cylindrocarpon radicicola

Downy leaf spot Microstroma juglandis
Melanconium dieback

Melanconis carthusiana
Melanconium juglandinum [anamorph]

Phytophthora crown and root rot

Phytophthora spp.
Phytophthora cactorum
Phytophthora cinnamomi
Phytophthora citricola
Phytophthora citrophthora
Phytophthora cryptogea
Phytophthora drechsleri
Phytophthora megasperma
Phytophthora nicotianae
= Phytophthora parasitica

Phytophthora trunk and branch canker

Phytophthora cactorum
Phytophthora citricola
Phytophthora citrophthora

Nematodes, parasitic

Nematodes, parasitic
Pin nematode Paratylenchus spp.
Ring nematode Mesocriconema xenoplax
Root lesion nematode Pratylenchus vulnus
Root knot nematode Meloidogyne spp.

Viral diseases

Viral diseases
Blackline genus Nepovirus, Cherry leaf roll virus (CLRV)
Walnut ring spot genus Nepovirus, Cherry leaf roll virus (CLRV)

Miscellaneous diseases and disorders

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
Botryosphaeria[1]

References

  1. ↑ Mazzaglia, A. "Bark Cankers on English Walnut: An Emerging Disease". Acta Horticulturae. International Society for Horticultural Science. Archived from the original on Feb 16, 2013.
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