Nigel Cattlin / Grapevine leaf roll virus symptoms on Pinot Noir grape leaves

Nigel Cattlin / Leafroll disease, grape leafroll asssociated viruses symptoms on Pinot Noir grape leaves , Champagne, France

Nigel Cattlin / Two-spotted spider mite (Tetranychus urticae) bronzing effect of grazing damage by mites on grapevine leaves, Champagne Region, France,

Nigel Cattlin / Mature bunch of red Pinot Meunier grapes on the vines with leaves turning in a Champagne Region vineyard, France

Nigel Cattlin / Leaves reddening, and fruit bunch of a Pinot Noir grapes on the grapevine in the Champagne Region of France

Nigel Cattlin / Bunch of Chardonnay grapes on the grapevine in the Champagne Region, France

Nigel Cattlin / Mature bunch of red Pinot Noir grapes on the vine in a Champagne Region vineyard, France,

Nigel Cattlin / Interveinal chlorosis and necrosis symptoms of magnesium (Mg) deficiency on the leaves of a Chardonnay grapevine, Champagne Region, France

Nigel Cattlin / Magnesium deficiency symptoms, reddening of leaves on Pinot Noir wine grapes in fruit, Champagne Region, France

Nigel Cattlin / Interveinal leaf necrosis caused by manganese (Mn) deficiency in Pinot Noir grapes in the Champagne Region of France

Nigel Cattlin / Necrotic lesions and damage on the margin of a Pinot Noir grapevine leaf caused by manganese deficiency, Champagne, France

Nigel Cattlin / Black rot (Guignardia bidwellii f. muscadinii) leaf spot lesions on muscadine grapevine, Florida, USA, May