Insecticide

Head circum- ference (cm)

Head weight (Kg)

Yield (Kg/m²)

Level of damage

DT
TS50
TS100
TS150

61.70±3.71 59.85±5.86 60.32±2.86 59.53±1.96

1.69±0.32 1.41±0.36 1.57±0.21 1.56±0.19

4.22±0.34 3.45±0.40 3.93±0.28 3.75±0.23

2.30±0.14
1.80±0.72
2.22±0.73
2.15±0.29

Cabbage plants were sprayed weekly with DT and C. schoenanthus aqueous extracts at 3 doses (TS50, TS100 and TS150). Measurement was made on ten samples in each case. Data are Means ± SD and non significant (P>0.05). DT: Dimethoate treatment (400 g of active ingredient per hectare); TS50: C. schoenanthus aqueous extracts treatment (50g/l); TS100: C. schoenanthus aqueous extracts treatment (100g/l); TS150: C. schoenanthus aqueous extracts treatment (150g/l).
Table 4: Effects of aqueous extracts of C. schoenanthus and dimethoate on cabbage Yield and quality.