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Table 2 The mean ± SD effect of cropping pattern and maize variety on the number of tunnels and tunnels length caused by Fall Army Worm on maize cultivated in the Niger Delta Region of Nigeria under two pheromone trap heights as a means of determining population dynamics

From: Population dynamics of Fall Army Worm [(Spodoptera frugiperda) J.E. Smith] (Lepidoptera: Nuctuidae) in maize-cassava intercrop using pheromone traps in Niger Delta Region

Damage level Pheromone trap height Sole Maize variety Cassava-Maize variety Intercrop Mean ± SD
OBA Super 98 White Maize Yellow Maize OBA Super 98 White Maize Yellow Maize
No. of tunnel 1 m 1.73 ± 0.17 3.07 ± 0.74 3.33 ± 0.47 1.60 ± 0.67 3.73 ± 1.35 3.13 ± 1.09 2.33 ± 1.19
1.5 m 1.80 ± 0.47 2.40 ± 0.45 0.67 ± 0.30 4.67 ± 1.09 5.80 ± 1.31 5.80 ± 1.41 2.83 ± 0.95
Mean ± SD 1.77 ± 0.32 2.73 ± 0.84 2.00 ± 0.39 3.13 ± 0.79 4.77 ± 1.83 4.47 ± 175 4.21 ± 0.23
Tunnel length 1 m 4.89 ± 1.38 7.06 ± 2.57 7.45 ± 1.76 4.83 ± 1.90 7.61 ± 2.44 4.12 ± 1.55 5.65 ± 1.04
1.5 m 5.57 ± 1.65 7.63 ± 1.46 3.75 ± 1.35 12.31 ± 1.63 11.88 ± 2.75 12.27 ± 2.94 8.42 ± 2.21
Mean ± SD 5.23 ± 1.52 7.35 ± 1.02 5.60 ± 1.56 8.57 ± 1.27 9.75 ± 2.52 8.20 ± 1.75 7.21 ± 1.13