Composition, Repellent, and Insecticidal Activities of Two South American Plants against the Stored Grain Pests Tribolium castaneum and Tribolium confusum (Coleoptera: Tenebrionidae)
Table 3
Average repellency of EOs of A. polystachya and A. citriodora against T. castaneum and T. confusum.
Average distribution coefficient (DC%)1
RCb
Plant
Insect
Hours after treatment
MRc
1
2
3
4
5
A. polystachya
T. castaneum
90
−13a
20a
13a
40a
20a
16
I
120
−6a
−46a
−60a
−66a
−80a
−51.6
0
314
46a
33a
66a
53a
46a
48.8
III
T. confusum
90
93a
86a
73a
93a
93a
87.6
V
120
86a
40a
40a
20ab
33a
43.8
III
314
80a
60a
53a
46b
46b
57
III
A. citriodora
T. castaneum
90
80a
93a
93a
80a
100a
89.2
V
120
93a
86a
73a
100a
80a
74.4
IV
314
80a
80a
66a
93a
93a
82.4
V
T. confusum
90
93a
100a
100a
100a
86a
95.8
V
120
80a
100a
93b
100a
100a
94.6
V
314
93a
86a
80b
80a
67a
81.2
V
DC% = ; a: concentration (g cm−2); bRC: repellency class; cMR: mean rate. Numbers in the same column of each plant followed by the same letters do not differ significantly in ANOVA test.