Symptoms 



mixture may be resorted to (7). Bum diseased 

 tissues, which may contain resting spores. 

 Pea (CuHnary). 



Root. — Chestnut brown patches on root 

 which subsequently dies, fohage turns yellow, 

 and buds drop or shrivel up. Due to Thielavia 

 basicola. See that drainage is thoroughly 

 efficient. Manure with potash manures. 



Stem. — Brown stripes or streaks in stem, 

 brown (at first water-soaked) spots in leaves. 

 Bacterial disease encouraged by hot conditions 

 and spread by diseased seeds. No cure known. 

 Diseased seeds have water-soaked (when young) 

 or brown areas in the cotyledons. 



Lower part of stem shows brownish ring 

 when cut, fohage wilts and turns yellow, due 

 to a species of Fusarium {F. vasinfectum ?). 

 Avoid planting on same groimd next season. 

 Bum diseased plants. 



Foliage. — ^Whitish powdery patches on fohage 

 due to mildew, Erysiphe polygoni. Most abimd- 

 ant on late peas. See that soil is moist, and 

 avoid hot, dry places ; sow late peas in trenches. 



Yellow spots on fohage, later followed by 

 greyish tufts of a fimgus, due to Botrytis cinerea. 

 Most common in wet places. 



Pods. — Round yellowish spots with a brown 

 margin, sometimes also on leaves. The centre 

 of the spot is occupied by brown fungus fruits. 

 88 



