Table 1.

Effectiveness of trunk-injecting Arbotect 20-S on October 4,1979, and October 8,1980. Data were recorded on June 6,1981, and on June 15, 1982.

Number of trees	Dilution rate	Years injected	% Twigs blighted		% Shoots blighted		% Leaves Infected
Number of trees	Dilution rate	Years injected	1981	1982	1981	1982	1981	1982
6	1:40	1979, 1980	0.8a^¹	3.4 a	1.6 a	0.8 a	6.2 a	2.0 a
6	1:20	1979	1.5 a	6.2 a	2.3 a	9.7 b	11.8 a	1.8 a
12	Controls	…	47.0 b	40.8 c	42.4 b	49.6 c	…^²	40.0 b

↵¹ Numbers in a column followed by the same letter are not significantly different, DMRT (P=0.01).
↵² leaves were present on control trees when data were taken in 1981.