Diseases of truck crops Diseases of truck crops / Ralph E. Smith diseasesoftruckc119smit Year: 1940 30 California Agricultural Extension Service [CiR. 119 Blight, Late Blight.—In this disease, the leaves and stems are blighted and have dead areas dotted with small, black, spore pustules (fig. 15). This disease, if not controlled, causes much loss to celery in California, both by stunting the growth of the plants in the field and by causing slimy rot (''slime') of the heads in shipment. It is caused either by Sey- toria apii or by a closely related fungus, S. apii-graveolentis. There is a

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Diseases of truck crops Diseases of truck crops / Ralph E. Smith diseasesoftruckc119smit Year: 1940 30 California Agricultural Extension Service [CiR. 119 Blight, Late Blight.—In this disease, the leaves and stems are blighted and have dead areas dotted with small, black, spore pustules (fig. 15). This disease, if not controlled, causes much loss to celery in California, both by stunting the growth of the plants in the field and by causing slimy rot (''slime') of the heads in shipment. It is caused either by Sey- toria apii or by a closely related fungus, S. apii-graveolentis. There is a I

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