Written by Charlotte Cunningham
A review of evidence and new trials work have revealed the factors most likely to influence cabbage stem flea beetle pressure in winter oilseed rape. Charlotte Cunningham reports. The ADAS-led research identified 31 factors, including an estimate of the reliability of each individual effect and an indication of how open each factor is to management. The results can be used to stack solutions in the field, as part of efforts to suppress the impact of this pest. Of the CSFB pressure factors identified, 20 decreased it, seven increased it and four, on balance, resulted in a neutral outcome. “Effective chemistry can stop pest targets in their tracks,” says Charlotte Rowley, who manages pest research at AHDB. “Without it, we need to get to grips with pest life cycles to find the chinks in their armour. As no non-chemical approach is completely reliable, a combination of the most reliable is needed to deliver multiple hammer blows and suppress CSFB populations.” The research team mapped out the key factors across a growing season and used a traffic-light system to indicate those most likely to affect control. Only two received a green light: trap crops and soil conditions during sowing/early establishment. OSR volunteers…
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