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Mildew on young wheat plant (d5_3112)

Yellow rust on wheat variety Oakley (d5_0221)

Close view of blight lesions on stems in crop (D9574)

Black scurf on tuber of red potato (D6780)

silver scurf on red potato tuber (D6783)

severe attack of potato blight late in season (D9501)

Black dot lesions on potato tuber (D10094)

Tubers of red potato variety with common scab (D10151)

Close up view of blight lesion on leaf of potato (D10285)

Black scurf on white potato tuber (D13043)

Powdery scab on potato tuber (D13045)

Potato blight in cut tuber (D13192)

Potato plant dying from seed borne disease, symptoms typical of dickeya (N-06-28-s2-0005)

Stem canker causing severe damage to stems of potato plants (T286-033)

Potato plants severely damaged by blight early in the season (T300-018)

botrytis lesions on potato leaves (D16155)

blighted plants on potato dump in June (N-06-09-s3-0026)

Sclerotinia in a crop of potatoes (D5_11762)

Powdery mildew on pea plant (D18740)

Downy mildew in growing point of pea plant (D17783)

Violet root rot lesion on surface of potato tuber (D9300)

Powdery scab on a seed potato tuber (D9_00959)

Sclerotinia patches in the canopy of an oilseed rape crop (D9_02393)

Severe phoma on volunteer rape plant (D_5769)

Sclerotinia showing on the outside of an oilseed rape stem (t440-0032)

Silver scurf (T157031)

Black scurf on potatoes (D5_2754)

Black dot on potato tuber (T21-09)

Severe attack of mildew on winter wheat lower leaves (d5_0181)

Yellow rust on wheat detail (d5_9838)

Take all in winter wheat. The nearest part is second wheat, the far end first wheat (D9_02566)

Septoria tritici on lower leaf of winter wheat (D5806)

Mildew on stem bases of wheat (T583-0020)

Septoria tritici on lower leaf of winter wheat (D5819)

Yellow rust on wheat , detail (d5_7239)

Mildew on upper leaves of wheat (d5_0180)

Barley yellow mosaic virus (D-300d03004)

Rhynchosporium in barley (D0969)

Rhynchosporium in barley (D1116)

Net blotch on barley leaf (T379004)

Barley yellow mosaic virus close up (D-300d03008)

Mildew on barley leaf (T274-026)

Powdery mildew on pea crop as it approaches maturity (d8847)

Bean leaf with downy mildew infection (D5_10195)

Bean leaves with downy mildew infection (D5_10198)

Severe infection of brown rust on upper leaves of winter wheat (D5_15655)

Yellow rust in wheat variety Warrior at GS 31-32. (D5_14825)

Whiteheads in winter wheat caused by fusarium at the stem base (d5_11001)

Septoria tritici lesions on flag leaf of winter wheat (T285-0034)

Downy mildew in parsley (D5_11680)

Downy mildew on onion (d_1987)

White rot on onions, mature bulbs (S43-0022)

Powdery mildew on carrot leaf (D9903)

Downy mildew on parsley (D5_11681)

Cercospora infection on sugar beet leaf (d10802)

Alternaria infection on sugar beet leaf (d18369)

Beet rust on sugar beet leaf (D5_3120)

Powdery mildew and rust infection on sugar beet leaf (D5_3131)

Sugar beet rust close up showing pustules and spores (D5_11618)

Ramularia on sugar beet leaf (D10799)

Downy mildew on young sugar beet plant (T433-0031)

Beet rust in sugar beet crop (D5_13273)

Phoma leaf spot on oilseed rape leaf (T404-024)

Sclerotinia showing on lower stem in oilseed rape crop (T438-0020)

Early signs of light leaf spot ion oilseed rape leaf (T406-022)

Net blotch on barley leaf (D5_18194)

Rhynchosporium on barley leaf (d0988)

Leaf spot considered to be caused by a hypersensitive reaction (D5_7229)

Net blotch on barley leaf (D9_01613)

Bean rust against a white background (D48)

Ascochyta leaf spot on field bean leaf (d10619)

Disease in peas Early signs of botrytis (D5_15644)

Disease in peas Early signs of botrytis (D5_15640.JPG)

Leaf and pod spot in peas (DSC01002.JPG)

Botrytis in pea pod (d8925)

Severe mildew infection in well tillered barley crop (D9_03316)

Net blotch and some mildew on barley leaf (T130-030)

close up of brown rust on barley leaf (d5_3358)

Close up of severe mildew infection on barley leaf (D9_03318)

BYDV showing as stunted , yellow plants in a barley crop (d6077)

BYDV showing as stunted , yellow plants in a barley crop (D6086)

Sclerotinia showing inside split stem (d18254)

Downy mildew on rape crop in autumn (D10137)

POd spotting in oilseed rape Dark pod spot-Alternaria (d18270)

View of lower leaves of wheat crop in spring around GS 30, T0. Septoria tritici lesions are visible (DSC02353)

Potato tuber showing symptoms of skin spot (t15-30)

Tuber of variety Nadine showing symptoms of necrotic virus PVY ntn (d9272)

Blackleg showing as wilting of a whole potato plant in June (D5_10471)

Blackleg showing as inky black colour in the stem (d5_9937)

Potato blight on leaflets against a white background (D9652)

Bacterial soft rot spreading into tuber from stolon after blackleg infection (D59993)

Tuber blight in potatoes (D13193)

Virus yellows infected beet plant (d2682)

Phoma stem canker on oilseed rape plant (D5_14573)

Tomato infected with late blight (phytopthera infestans) (d5_19517)

Yellow rust in Santiago march 2014 pre t0 stage (DSC04105)

A patch of downy mildew in an onion crop (D9_02783)

downy mildew in onions (d17611)

downy mildew in onions (d17614)

downy mildew in onions (S004-0030)

downy mildew in onions (D5_11841)

ergot on blackgrass ear (D5_22021)

Tuber blight in potato (D-13194)

Agronomists at a blight trial on a wet day (D-9527)

potato foliar blight (D-9571)

potato dump, a poweful blight source (N-06-09-s3-0021)

potato dump, a poweful blight source (N-06-09-s3-0022)

potato dump, a poweful blight source (S117-0004)

Alternaria lesions on leaf of Maris Piper (D5_2822)

Blackleg showing in stem of potato plant (d5_9937)

Gangrene / Phoma lesion on surface of potato tuber (D5_14590)

potato blight on foliage (d9567)

Volunteer potato in barley (T552-0026)

light leaf spot on underside of leaf (D5-22479)

Yellow rust in the ear and inside floret of wheat (D5_23447)

Coriander suffering from root rot. Rhizoctonia suspected (DSC05323)

alternaria on potato leaf , population confirmed as mainly a solani (D5_23805)

alternaria on potato leaf , population confirmed as mainly a solani (D5_23799)

The underside of a potato leaf showing detail of fungal growth beside lesion (2D1A9562)

Potato leaf showing underside of sporulating blight lesion (2D1A9516)

Potato leaf showing underside of sporulating blight lesion (2D1A9552)

Downy mildew on underside of oilseed rape cotyledon (2D1A9661)

Downy mildew on oilseed rape cotyledo (2D1A9667)

Light leaf spot on oilseed stem (2D1A9838)

Powdery mildew in a sugar beet crop in October (2D1A_10400)

Rust in a sugar beet crop in October (2D1A_10418)

Severe case of Violet root rot in potato tuber (D5-22275)

Macro- Severe case of Violet root rot in potato tuber (D5-22280)

Brown rust on barley leaf (2D1_11158)

Advanced light leaf spot on oilseed rape leaf (N-04-18-s3-0032)

light leaf spot on oilseed rape leaf (T406-019)

light leaf spot on oilseed rape leaf (T404-017)

Downy mildew in crown of sugar beet plant (D9_02732)

Gallant wheat untreated with fungicide in July (d5 23400)

Crusoe wheat untreated with fungicide in July (D5_23403)

Skyfall wheat untreated with fungicide in July (D5_23410)

KWS Siskin wheat untreated with fungicide in July (D5_23419)

Revelation wheat untreated with fungicide in July (D5_23423)

Yellow rust on wheat variety Illustrious at GS 13 (5d_24269)

Wheat ear infected with fusarium (D9_02395)

Wheat ear infected with fusarium (D9_02400)

Septoria tritici on leaf two of wheat (T291-005)

Pile or dump of discarded potatoes which provides a potent source of infection for potato blight (D5_23138)

BYDV symptoms in barley crop ( T291-032)

BYDV symptoms in wheat crop (d6681)

BYDV symptoms in wheat crop ( T585-0007)

Symptoms of TRV in plant grown from infected seed (2d1a_12018)

Septoria tritici on leaf one, the flag leaf of winter wheat (2d1a_12231.jpg)

Septoria tritici on leaf one, the flag leaf of winter wheat (2d1a_12223)

Septoria tritici on leaf one, the flag leaf of winter wheat (2d1a_12229)

Blight on volunteer potatoes in a maize crop (2d1a-12667)

Light leaf spot on oilseed rape pods (2dia-12597)

Light leaf spot on oilseed rape stem and pods (2dia-12593)