Figure 3. Plant extracts on B. brassicae, major season.
Effects of plant extracts and synthetic insecticide on mean (±SE) Brevicoryne brassicae score in a field experiment during the major rainy season, 2012 at Kumasi, Ghana.
Effects of plant extracts and synthetic insecticide on mean (±SE) Brevicoryne brassicae score in a field experiment during the major rainy season, 2012 at Kumasi, Ghana.