CONTENTS 



Page. 



History in brief ^'^ 



Europe ^"^ 



United States 19 



South America 1^ 



South Africa 20 



Earlier studies in the Department of Agriculture 20 



Studies detailed in this bulletin 21 



Discovery of the bacteria, first isolations and inoculations 21 



Confirmatory inoculations and cross-inoculations 25 



Experiments with the daisy organism 25 



Daisy on daisy 25 



Daisy on field daisy 28 



Daisy on Japanese chrysanthemum 28 



Daisy on Chrysanthemum coronarium and on Shasta daisy 28 



Daisy on corn marigold 28 



Daisy on pyrethrum 29 



Daisy on English daisy 29 



Daisy on salsify 29 



Daisy on tomato 30 



Daisy on potato ^^ 



Daisy on tobacco 3" 



Daisy on oleander 31 



Daisy on olive 33 



Daisy on vegetables (beet, radish, carrot, etc.) 34 



Daisy on European grapes 35 



Daisy on American grapes 36 



Daisy on impatiens 36 



Daisy on clovers and alfalfa 37 



Daisy on peach 38 



Daisy on almond 4" 



Daisy on raspberry 41 



Daisy on blackberry '^2 



Daisy on apple '*2 



Daisy on rose ^3 



Daisy on various orchard trees 44 



Daisy on cabbage 44 



Daisy on carnation 45 



Daisy on sugar beet - 4o 



Daisy on hop 48 



Daisy on fig 49 



Daisy on chestnut ^" 



Daisy on oak ^^ 



Daisy on Persian walnut ^^ 



Daisy on winged hickory 51 



Daisy on gray poplar "^1 



213 _ 



6 



