ABSTRACT
Plant parasitic nematodes can be controlled by several methods. A nematicide is a type of chemical pesticide used to kill plant-parasitic nematodes. Nematicides have tended to be broad-spectrum toxicants possessing high volatility or other properties promoting migration through the soil. Most soil nematicides are also registered as insecticides or fungicides. Nematicide application research is being driven by the need to maximize efficacy while minimizing groundwater and atmospheric contamination. Prior to fumigant or nonfumigant application, soil is often turned or tilled to increase porosity and uniformity and promote decomposition of residual plant roots, which can serve as hiding places for nematodes or interfere with fumigant movement. Drip irrigation in particular offers a means of precisely controlling the amount of active ingredient delivered to a field, as well as regulating the amount of water, so that leaching of active ingredient beyond the root zone and into groundwater can be eliminated.
