Comparative Efficacy of Three Doses of COLAM 247 SC in the Management of Cabbage Insect Pests in Western Burkina Faso

Aims: Contribute to protect Cabbage crops by evaluating the biological efficacy of a new binary, COLAM 247 SC.

Study Design: A completely randomized Fisher block with five treatments and four replicates.

Place and Duration of Study: The efficacy of some insecticides on Cabbage’s insect pests was carried out in a farming environment on the developed perimeter of the Vallée du Kou, region of Hauts Bassins, Burkina Faso between September and December 2022.

Methodology: Treatments included Colam 1 (0.075 l/ha), Colam 2 (0.15 l/ha), Colam 3 (0.25 l/ha), K-optimal (1 l/ha) and the untreated control. Each elementary plot covered an area of 24 m2. The distance between elementary plots was 1 m and that between blocks was 2 m. Plant spacing was 0.5 m between bunches and 0.8 m between rows, for a total of 60 plants per elementary plot

Results: More than 80% of Aphids populations was reduced by the three doses of Colam 247 SC and K-optimal. The low reduction rates of diamondback moth larvae population were observed with the three doses of Colam 247 SC (14.36 to 21.79%) while K-optimal failed to reduce the larvae population of this insect pest. Chemical insecticide used contributed to improve cabbage yield (74.5 to 89.30 t/ha) as compared to the control (73.50 t/ha) even though statistical analyses did not reveal any significant difference (P > .05).

Conclusion: The Colam 247 SC at the dose of 0.15 l/ha can be used by farmers as an additional insecticide in the control of cabbage insect pests.