Table 1.
Results of operational Dutch elm disease therapy: (number) of trees treated and percent without symptoms in the year following last treatment
Infection type
Treatments
Prune
Inject
Prune & inject
Total
Current year
(10)
100
(21)
76
(18)
100
(49)
89.8
Residual
(3)
0
(12)
33
(14)
71
(29)
48.3
Root graft
(0)
-
(4)
0
(0)
-
(4)
0
Total
(13)
77
(37)
54
(32)
88
(82)
70.7