Field Experiments on Cereal Root Eelworm

In 1955‐59 experiments were carried out in south‐west England on field sites heavily infested by the cereal root eelworm, to determine the behaviour of the soil population under various crops. Under three common types of ley, the population fell to less than 5% of its original level in 3 years. Of six pure grass stands tested, the population fell most sharply under cocksfoot and tall fescue. Observation plots under the four cereals illustrate their different efficiencies as hosts.