Nov. I, 1919 



Recent Studies on Sclerotium roljsii Sacc. 



131 



Table II. — Inoculation with pure cultures of Sclerotium rolfsii on various hosts 



Source and age of 

 culture. 



Date of inocu- 

 lation. 



Host inoculated. 



Method. 



Result. 



Controls. 



la. Delaware 



strain, I year ol da 



Do. 

 Do. 

 Do. 



lb. Transfer from 

 la, 10 days old. 

 Do 



Do. 



Do. 



ic. Fresh strain, 



isolated from 



cantaloupe, 10 



days old. 



Do 



Do. 

 Do. 



Do. 



Do 



id. Fresh strain 



isolated from 



tomato in field, 



8 days old. 



Do 



Do. 

 Do. 

 Do. 

 Do. 

 Do. 



Do. 

 Do. 

 Do. 

 Do. 



le. Fresh strain 



isolated from 



peanut in field. 



Do 



Do. 



Do. 

 Do. 



July 9. 191 7 



.do. 

 .do. 

 .do. 



....do 



....do 



....do 



....do 



July 15,1917 



.do. 

 .dg. 

 .do. 



.do. 



....do 



July 16,1917 



.do. 

 .do. 

 .do. 

 .do. 

 .do. 

 .do. 



.do. 



.do. 

 .do. 

 .do. 

 .do. 



Aug. 19, 191 7 



.do. 



.do. 



.do. 

 .do. 



1 5 tomato plants, 

 6 weeks old. 



10 peanut plants. 

 3 cabbage heads . 

 10 tubers Irish 



potatoes. 

 IS tomato plants, 



6 weeks old. 

 10 peanut plants. 



3 cabbage heads. . 



10 tubers Irish 



potatoes. 

 6 tomato plants, 



5 weeks old. 



14 sweet-potato 



plants. 

 2 watermelon 



fruits. 

 20 sweet-pota- 



tato roots. 



10 cantaloupe 



fruits. 

 6 gourd fruits . . 

 8 tomato plants, 



12 weeks old. 



3 peanut plants, 

 9 weeks old. 



10 sweet-potato 

 plants. 



20 corn plants, 3 

 weeks old. 



6 watermelon 

 fruits. 



5 cantaloupe 

 fruits. 



10 unripe ba- 

 nana fruits. 



6 sweet-potato 

 roots. 



12 apples, varie- 

 ty unknown. 

 5 squashes 



5 pepper plants, 

 7 weeks old. 



7 tomato plants, 

 5 weeks old. 



7 peanut plants, 

 5 weeks old. 



12 sweet-potato 

 plants,4 weeks 

 old. 



10 tubers Irish- 

 potatoes 



8 sweet-potato 

 roots. 



Fungus worked 

 into sterile 

 soils. 6 



....do 



Puncture 



....do 



All healthy . 



.do. 

 .do. 

 .do. 



Fungus worked 

 into sterile soil 

 ...do 



Puncture . 

 ....do..., 



1 2 positive infec- 

 tions. 

 6 positive infec- 

 tions. 

 All positive infec- 

 tions. 

 do 



Fungus worked 

 into soil. 



....do... 

 Puncture . 

 ....do.. . 



.do. 



Puncture 



Fungus worked 

 into soil. 



....do.... 



do.... 



do.... 



Puncture. 



do.... 



do.,.. 



5 positive infec- 

 tions. 



9 positive infec- 

 tions. 



Both positive in- 

 fections. 



17 positive, 3 soft 

 rotted from 

 Rhizopus. 



All positive in- 

 fections. 



do 



S positive infec- 

 tions. 



All positive in- 

 fections. _ 



9 positive infec- 

 tions. 



8 positive infec- 

 tions. 



All positive in- 

 fections. 



do 



.do. 



.do. 

 .do. 

 .do. 



Fungus worked 

 into soil. 



do 



.do. 

 .do. 



Pimcture. 

 ....do.... 



All positive in- 

 fections, an- 

 thracnose pres- 

 ent. 



S positive infec- 

 tions, I soft- 

 rotted from 

 Rhizopus. 



All positive in- 

 fections. 



do 



.do. 



4 positive infec- 

 tions, I doubt- 

 ful. 



5 positive infec- 

 tions. 



All positive in- 

 fections. 

 do 



8 positive in- 

 fections. 



All positive in- 

 fections. 



5, all healthy. 



Do. 

 2,both healthy. 

 5, all healthy. 



Do. 



Do. 



2, I healthy, i 

 black-rottedc 

 5, all healthy. 



3, all healthy. 

 2, both healthy. 

 6, all healthy. 



2, both healthy. 



Do. 

 Do. 



Do. 

 5, all healthy. 

 10, all healthy. 



2, both healthy. 



Do. 



S, 4 healthy, i 

 rotted from 

 anthracnose. 



3, all s o f t- 

 rotted from 

 Rhizopus. 



4, all healthy. 



3, all healthy. 



2, both 

 healthy. 

 Do. 



4, all healthy. 



5, all healthy. 



4, aU healthy. 



5, all healthy. 



a Culture originally obtained from Alabama. 



b Fungus mucelium crushed up in sterile water, then worked in about % inch deep. 



c Black-rotted by Pseudomonas compestris (Pam) Ew. Sm. 



