INDEX 



Page. 



Agriculture, Department, demonstration work with apple diseases 7,17-20 



Apple blotch and other diseases, combination treatment 22-23 



bibliography 8-9 



cause, study ... 13-17 



control, experiments with Bordeaux mixture and recommenda- 

 tions 17-23 



description and behavior 9-13 



fungus, attack on fruit buds 10-11 



effect and appearance on leaves 11 



growth 'and effect on fruit spurs, twigs, and shoots 10 



in fruit 14 



identification as Phyllosticta solitaria 13 



life history, study 13-17 



history and distribution in United States 7-9 



infection periods, observations in Ozark region 12 



outbreaks, relation of weather conditions 12 



preventive measures 17-21 



susceptibility of varieties 12-13 



buds, disease caused by apple blotch and black-rot fungus 10-11 



diseases. See Diseases. 



Apples, blotched, appearance 9 



utilization 9-10 



Arkansas. Benton ville, spraying experiments for control of apple blotch 17-19 



Gravette, spraying experiments for control of apple blotch 19-20 



Bark, effect of apple-blotch fungus 15 



Ben Davis apple, spraying for apple blotch, experiments 17-20 



disease control, recommendations 23 



susceptibility to apple blotch 8, 12, 23 



Bibliography, apple blotch 8-9 



Bitter-rot control, course of spraying 22 



Black-rot fungus, attack on fruit buds 10-11 



Blotch, apple. See Apple blotch. 



Blotches, fruit, appearance, development, and character of damage to fruit 9-10 



Bluestone, use in Bordeaux mixture 20-21 



Bordeaux mixture, formula, directions for mixing, applying, etc 20-31 



spraying experiments for control of apple blotch 17-21 



Buds, apple fruit, disease caused by apple blotch and black-rot fungus 10-11 



Cankers, twig, development and effect on tree 10-11 



identity with apple-blotch fungus 14 



relation to fruit blotches, inoculation experiments 16-17 



source of apple-blotch infection 14-15 



Characters, cultural, of apple-blotch fungus 15 



Clinton, study of apple-blotch fungus 8, 13 



Codling moth, control, course of spraying 22 



Culture media, apple-blotch fungus 15 



Demonstrations, spraying, for control of apple blotch 17-20 



work with apple diseases by Department of Agriculture 7, 17 20 



144 27 



