Fig. 1. Double boxplots expressing the distribution of the seasonal mean incidence of hop plants with powdery mildew (as a proportion) and fungicide spray date (left), first spray date (middle), or the distribution of spray date and first spray date (right). The first (baseline) fungicide application type is excluded in this visualization.

Jae Young Hwang et al. developed models for estimating the probability of switching behavior by hop growers related to use of nonsynthetic or synthetic fungicides (or mixtures thereof) for hop powdery mildew (#Podosphaera macularis). Learn more: https://doi.org/10.1094/PDIS-01-25-0044-RE

Powdery #mildew of fireweed (#Epilobium angustifolium) caused by #Podosphaera epilobii (Moudeyres, FR).

Podosphaera aphanis ex Alchemilla vulgaris agg.

#Alchemillavulgaris #Alchemilla #Frauenmantel #Ladysmantle #piedeleón #Alchémillecommune #Podosphaeraaphanis #Podosphaera #EchterMehltau #PowderyMildew #Phytopathology #mushroom #mushrooms #fungus #fungi #pilz #champignon #nature #natur #FungiFriends

Podosphaera aphanis ex Alchemilla vulgaris agg.

#Alchemillavulgaris #Alchemilla #Frauenmantel #Ladysmantle #piedeleón #Alchémillecommune #Podosphaeraaphanis #Podosphaera #EchterMehltau #PowderyMildew #Phytopathology #mushroom #mushrooms #fungus #fungi #pilz #champignon #nature #natur #FungiFriends

Powdery #mildew on daisy fleabane (Erigeron sp., likely E. annuus) caused by #Podosphaera erigerontis-canadensis, with a single ascus per cleistothecium (Verdale, FR). Thanks @RPilze for the help 🙏.

x.com/RPilze/status/…

Powdery #mildew on daisy fleabane (Erigeron sp., likely E. annuus) caused by #Podosphaera erigerontis-canadensis, with a single ascus per cleistothecium (Verdale, FR). Thanks @RPilze for the help 🙏.

x.com/RPilze/status/…

Powdery #mildew on common agrimony (#Agrimonia eupatoria) caused by #Podosphaera aphanis, here with cleistothecia containing a single ascus and 8 ascospores (Les Clayes-sous-Bois, FR).

Powdery #mildew on common agrimony (#Agrimonia eupatoria) caused by #Podosphaera aphanis, here with cleistothecia containing a single ascus and 8 ascospores (Les Clayes-sous-Bois, FR).

#Powdery mildew on buckhorn plantain (Plantago lanceolata) caused by #Podosphaera plantaginis, here with cleistothecia containing a single ascus and eight ascospores (Saint-Aubin-sur-Mer, FR).

#Powdery mildew on buckhorn plantain (Plantago lanceolata) caused by #Podosphaera plantaginis, here with cleistothecia containing a single ascus and eight ascospores (Saint-Aubin-sur-Mer, FR).

Powdery #mildew on buck's-horn plantain (#Plantago coronopus), Saint-Aubin-sur-Mer, FR. Not possible to distinguish macroscopically #Podosphaera plantaginis from #Golovinomyces sordisus. The coastline has to retain some of its phytopathological mystery.

Powdery #mildew on buck's-horn plantain (#Plantago coronopus), Saint-Aubin-sur-Mer, FR. Not possible to distinguish macroscopically #Podosphaera plantaginis from #Golovinomyces sordisus. The coastline has to retain some of its phytopathological mystery.

Powdery #mildew on Rosa sp. caused by #Podosphaera pannosa, Les Clayes-sous-Bois, FR.

Powdery #mildew on Rosa sp. caused by #Podosphaera pannosa, Les Clayes-sous-Bois, FR.

Powdery #mildew of wood avens (Geum urbanum) caused by #Podosphaera aphanis, Les Clayes-sous-Bois, FR.

Powdery #mildew of wood avens (Geum urbanum) caused by #Podosphaera aphanis, Les Clayes-sous-Bois, FR.

Powdery #mildew caused by #Podosphaera fugax, this time on bloody cranesbill (Geranium sanguineum), Villeneuve-Tolosane, FR.

x.com/wheatpath/stat…

Powdery #mildew caused by #Podosphaera fugax, this time on bloody cranesbill (Geranium sanguineum), Villeneuve-Tolosane, FR.

x.com/wheatpath/stat…

Powdery #mildew caused by #Podosphaera fugax, this time on bloody cranesbill (Geranium sanguineum), Villeneuve-Tolosane, FR.

x.com/wheatpath/stat…

Powdery #mildew on Geranium molle, likely caused by #Podosphaera fugax (Thiverval-Grignon, FR). Difficult to distinguish from Erysiphe geraniacearum or Neoërysiphe geranii in spring when cleistothecia are absent.

Powdery #mildew on Geranium molle, likely caused by #Podosphaera fugax (Thiverval-Grignon, FR). Difficult to distinguish from Erysiphe geraniacearum or Neoërysiphe geranii in spring when cleistothecia are absent.

Powdery #mildew on Geranium molle, likely caused by #Podosphaera fugax (Thiverval-Grignon, FR). Difficult to distinguish from Erysiphe geraniacearum or Neoërysiphe geranii in spring when cleistothecia are absent.

#Mildew on petty #spurge (#Euphorbia peplus) found yesterday in the 'rose alley' of the garden, likely caused by #Podosphaera euphorbiae.
NB: I had planned to make more observations, but since then @MurielSuffert has weeded everything 😱😪.

#Mildew on petty #spurge (#Euphorbia peplus) found yesterday in the 'rose alley' of the garden, likely caused by #Podosphaera euphorbiae.
NB: I had planned to make more observations, but since then @MurielSuffert has weeded everything 😱😪.