CHEMICAL CONTROL OF POTATO ROOT EELWORM IN GLASSHOUSE SOILS USING DAZOMET.

This article discusses the chemical control of potato root eelworm in glasshouse soils using dazomet. The effectiveness of dazomet dust applied to the soil surface and then rotavated in to a depth of approximately 9 inches was compared with similar surface application followed by mixing into the soil by double forking and with similar surface treatment followed by single forking, in replicated randomized plots, for the control of potato root eelworm in glasshouse soils at three centers. With the three treatments the post-treatment cyst densities remained approximately the same as the initial cyst densities but the number of hatched larvae was markedly reduced, a kill of at least 95 per cent being obtained.