In 5 replicated field trials in eastern Scotland, pre-planting treatments with aldicarb (6.6 kg a.i./ha) or dazomet (223 or 336 kg/ha) controlled P. penetrans and improved first year growth of raspberry at heavily infested sites. At 4 of the sites, treatment with dazomet produced a greater increase in cane growth than treatment with aldicarb. Additional treatments with 3 rates of nitrogen (0, 45 or 90 kg N/ha) showed that mineralization of organic nitrogen was not responsble for this difference. At sites heavily infested with P. penetrans, dazomet or aldicarb increased cane growth more than at lightly infested sites, where there was an indication that aldicarb might be slightly phytotoxic to raspberry.