i 7 
TABLE 8.=--Recapitulation of the data to show the effectiveness of treatment on the 
occurrence of disease in nursery elms, 
Percentage of Control (+) 
or Lack of Control (-) 
Total 
Number of 
Trees in 
Test Groups 
Number 
of Groups 
of Test Trees 
Used 
Treatment 
WRLC ne se fb. el eke ene es 6 
Sulfur Dusts 
BGT OOUR te at ot ‘wks iaikai eine! iy en ie 
Kolodust..and pruning, ., « .«::s 
"Mike" sulfur (2 years), 
flotation sulfur (2 years). 
"Mike" sulfur (2 years), 
flotation sulfur (2 years) 
Pelt) A012 re ie bdieg cs [chalet @,; fe 
Sulfur Sprays 
Dry wettable flotation sulfur 
MertCrOriicrs » eos 9 s)\s 2 1s 
KoLororm and pruning, . 4... 
Pr Kereeuktar 23 SIRaRea ey. 
"Mike" sulfur and pruning. . 
Lime sulfur dormant and 
Sul Gertspray ss. Gaeee te a 
Lime sulfur dormant, sulfur 
sprays (summer) and pruning 
Copper Sprays 
Commercial Bordeaux . . « e e 
TriSGar UesOraocaux Gis ws be). alle x0 
Instant Bordeaux and pruning. 
Z-0 r) e 2 e e ° e e e e e e e 
Z-O and pruning . 
* These averages were obtained by weightingdata from individual groups in proportion to 
_ the number of trees in the groups. 
alg 
