A Bacterial Disease of Stone Fruits 



427 



Plum {concluded) 



Chabot, 85-15-100-a-m 



Clifford, O-O-lO-n-n 



Cumberland, 20-0-0-a-m 



Downing (Charles Downing), o5-2{)-0-n-m 



Diamond, 0-0-?-n-n 



Douglass, 8(>-20-0-a-m 



Damson (Blue Damson), 0-0-?-n-n 



Elapa, 55-20-0-n-n 



Funk, 0-0-?-n-m 



Gonzales, 9.5-3(}-?-a-m 



Grand Duke, O-0-?-n-n 



Guthrie Topaz (Topaz), 63-25-?-n-n 



Hale, 9()-3.5-?-a-m 



Hattankio (Hj'tankio), 50-lo-lO-a-m 



Hawkeye, 50-lo-O-p-n 



Hungarian Prune, (>-0-?-p-n 



Italian Prune, 0-0-0-n-n 



Jefferson, 0-0-7-n-n 



Jones Special, 7o-25-30-n-n 



Kerr, 60-25-?-a-m 



Ivrap, 55-33-0-p-n 



&oh (Poole's Pride), 40-20-1 0-f-m 



Lacy, 100-45-?-n-n 



Lombard, 0-0-?-n-n 



Maryland, 0-0-0-n-n 



]\Iilton, 0-0-0-n-n 



Monarch, .50-20-?-p-n 



NewTnan, 40-20-l(>-f-n 



October (October PurpleJ, 85-40-?-a-m 



Ogon, 95-30-30-a-e 



Orleans (Smith's Orleans), 0-0-?-n-n 



Owanka, 55-15-?-n-n 



Peter's Gage, 0-(>-?-n-n 



Pond (Hungarian Prune), 0-0-?-p-n 



Pride (Shipper's Pride), 30-12-?-f-n 



Purple Leaf, 90-35-?-a-m 



Quaker, 45-lo-50-p-m 



Reagan, 55-25-0-n-n 



Red Goose, 40-20-?-n-m 



Red June, 95-25-1 OO-a-e 



Red Nagat€, 100-50-?-a-m 



Red October, 55-10-0-a-m 



Peine Claude, 40-8-?-p-n 



Robinson, 40-15-100-n-m 



St. INIartin (Coe's Late Red) , (>-0-?-n-n 



Shropshire (Shropshire Damson), 0-0-?-n-n 



Sophie, 40-10-10-f-n 



Stella, 95-55-?-p-n 



Tokeya, 40-10-?-n-n 



\Yakapa, 5.5-15-?-n-n 



Ward October, 40-10-20-p-m 



Ward October Red, 45-15-0-a-m 



Wastesa, 75-35-?-p-n 



Whitaker, 0-0-0-n-m 



Whiting, 0-0-?-n-m 



Wildgoose, 40-10-0-n-m 



Willard, 100-40-?-p-e 



Winnipeg, 55-25-?-f-s 



Wohanka, 50-25-?-n-n 



Yellow Egg, 0-0-?-n-n 



Yosemite, 90-30-10-a-e 



Zekanta, 48-15-?-n-n 



CONTROL 



Observations and experiments ni control were made principally with 

 peaches and plums, as only a few varieties of apricots and nectarines were 

 available for experimental work. This phase of the subject maj^ be dis- 

 cussed under four heads: exclusion, eradication, protection, and immuni- 

 zation. 



EXCLUSION 



In budding, the greatest care should be exercised in selecting material 

 only from trees known to be free from the organism. Even though the 

 twdgs are free from cankers, the organism may be transferred to the healthy 

 stock thi'ough infected buds. Laboratoiy and field experiments made 

 at the Missouri State Fruit Experiment Station show that it is impos- 

 sible to determine from the external appearance of the bud whether it is 

 infected. 



