Research Article

Evaluation of Different Rates of Ampligo Insecticide against Fall Armyworm (Spodoptera frugiperda (JE Smith); Lepidoptera: Noctuidae) in the Coastal Savannah Agroecological Zone of Ghana

Table 5

The effect of Ampligo treatments on the phytotoxic factors considered during sampling for FAW maize leaf and whorl.

Phytotoxic factorsAmpligo treatments
0 ml/ha200 ml/ha240 ml/ha

Thinning0.1 ± 0.040.004 ± 0.0040.00 ± 0.00
Chlorosis0.4 ± 0.050.05 ± 0.0180.04 ± 0.01
Necrosis0.5 ± 0.060.1 ± 0.030.1 ± 0.03
Wilting0.3 ± 0.050.02 ± 0.010.00 ± 0.00
Rolling0.2 ± 0.040.01 ± 0.0070.005 ± 0.005
Curling0.4 ± 0.050.03 ± 0.010.01 ± 0.008
Stunting0.6 ± 0.070.1 ± 0.030.06 ± 0.02

Phytotoxicity scale: 0.0–1.0 = low phytotoxicity; 1.0–2.0 = medium phytotoxicity; 2.0–3.0 = high phytotoxicity; scale modified from EPPO (2014).