Table 1. Numbers of plum curculios captured by each type of trap in blocks of unsprayed and sprayed apple trees. May 1- June 19, 1998.

Trap type
Number of replicates
Number of curculios per trap*
Unsprayed
Sprayed
Unsprayed
Sprayed

Sticky clear traps at edge of woods
8
8
0.5 c
1.6 a

Sticky clear traps at edge of apple trees
8
8
2.6 b
1.0 a

Sticky green traps at edge of apple trees
8
8
1.9 b
0.8 a

Sticky black traps at edge of apple trees
8
8
0.3 c
0.4 a

Black pyramid traps at apple tree trunks
16
16
26.3 a
1.5 a

Black cylinder traps in apple tree canopies
16
16
2.2 b
0.5 a
  • * Numbers in the same column followed by a different letter are significantly different at odds of 19:1.
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