Environment
Pratylenchus can endure a wide range of environmental conditions. Moist temperate soils are ideal conditions for breeding and migrating underground, but they can persist even in warm and dryer environments. When the nematodes are susceptible to drying they lie quiescent until moisture increases and plants resume growth. Lesion nematodes remain inactive when soil temperatures are below 59°F (15°C); except for P. penetrans, there is little activity until temperatures rise above 68°F (20°C). Sandy soils and weed infestation are other factors that increase the likelihood of Pratylenchus prevalence. Several parameters influence the soil environment, and the optimal conditions may vary between Pratylenchus species. Some important factors that can alter Pratylenchus abundance include: soil moisture, mineral components, temperature, aeration, organic matter, and pH.
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