Tricky decision on aphid control.

The article discusses issues related to aphid control in Great Britain. With no prolonged cold spell to kill off aphids, growers have a tricky decision on whether to over-spray crops with a pyrethroid insecticide as the seed treatment runs out of steam. Crops drilled late September 2006 onwards should not need treating with a pyrethroid insecticide, unless there is extreme barley yellow dwarf virus pressure, says Bayer CropScience seed treatment manager Adrian Cottey.