Category Archives: Plant Pathogens

Plant Pathology (plant diseases)

A-Rated, Plant Pathogens, Ratings, Viruses and viroids

Rice hoja blanca virus white leaf disease of rice

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California Pest Rating Proposal for

Rice hoja blanca virus
white leaf disease of rice
Current Pest Rating: None
Proposed Pest Rating: A

Comment Period: 04/16/2026 through 05/31/2026

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Posted by SK

A-Rated, Plant Pathogens, Ratings, Viruses and viroids

Plum pox virus Sharka disease

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California Pest Rating Proposal for

Plum pox virus
Sharka disease
Current Pest Rating: None
Proposed Pest Rating: A

Comment Period: 04/16/2026 through 05/31/2026

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Posted by SK

C-Rated, Fungi, Plant Pathogens

Podosphaera pannosa (Wallroth) de Bary Rose powdery mildew

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California Pest Rating Proposal for

Podosphaera pannosa (Wallroth) de Bary
Rose powdery mildew
Current Pest Rating: Z
Proposed Pest Rating: C

Comment Period: 04/16/2026 through 05/31/2026

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Posted by SK

B-Rated, Fungi, Plant Pathogens, Ratings

Phaeotrichoconis crotalariae (M.A. Salam & P.N. Rao) Subram. (1956) Leaf spot of palms

California Pest Rating Profile for

Phaeotrichoconis crotalariae (M.A. Salam & P.N. Rao) Subram. (1956)
Leaf spot of palms
Pest Rating: B

Comment Period: 03/26/2026 through 05/10/2026

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Posted by SK

B-Rated, Fungi, Plant Pathogens, Ratings

Cercospora hydrangeae Ellis & Everh. (1892) Cercospora leaf spot of hydrangea

California Pest Rating Profile for

Cercospora hydrangeae Ellis & Everh. (1892)
Cercospora leaf spot of hydrangea
Pest Rating: B

Comment Period: 03/19/2026 through 05/03/2026

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Posted by SK

A-Rated, Bacteria

Xanthomonas oryzae pv. oryzae (Ishiyama, 1922) Swings et al., 1990 Rice bacterial blight

California Pest Rating Profile for

FXanthomonas oryzae pv. oryzae (Ishiyama, 1922) Swings et al., 1990
Rice bacterial blight
Pest Rating: A

Comment Period: 02/25/2026 through 04/11/2026

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Posted by SK

A-Rated, Bacteria

Xanthomonas oryzae pv. oryzicola (Fang et al. 1957) Swings et al. 1990 bacterial leaf streak of rice

California Pest Rating Profile for

Xanthomonas oryzae pv. oryzicola (Fang et al. 1957) Swings et al. 1990
bacterial leaf streak of rice

 Pest Rating: A

Comment Period: 02/25/2026 through 04/11/2026

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Posted by SK

B-Rated, Fungi, Ratings

Fusarium phalaenopsidis Tsao et al., 2024 Phalaenopsis leaf yellowing

California Pest Rating Profile for

Fusarium phalaenopsidis Tsao et al., 2024
Phalaenopsis leaf yellowing
Pest Rating: B

Comment Period: 02/25/2026 through 04/11/2026

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Posted by SK

Bacteria, C-Rated, Plant Pathogens

Candidatus Phytoplasma trifolii Hiruki & Wang 2004 clover proliferation phytoplasma

California Pest Rating Profile for

Candidatus Phytoplasma trifolii Hiruki & Wang 2004 clover proliferation phytoplasma

 Pest Rating: C

Comment Period: 02/19/2026 through 04/05/2026

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Posted by SK

C-Rated, Fungi, Plant Pathogens, Ratings

Fusarium asiaticum O’Donnell, Aoki, Kistler & Geiser 2004

California Pest Rating Profile for

Fusarium asiaticum O’Donnell, Aoki, Kistler & Geiser 2004
Pest Rating: C

Comment Period: 02/06/2026 – 03/23/2026

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Posted by SK