For many years earthworm castings on sports turf was easily prevented by the pesticide chlordane. But now chlordane is banned, the problem has returned because none of the chemicals currently used are as effective. Dr. David T. Jones of the Natural History Museum in London examines the situation in the September issue of the Institute of Groundsmanship’s publication, Sports Turf, Amenity & Leisure. Click here to download and go to page 43 for the entire article.