Effects of a Commercial Formulation of Paecilomyces lilacinus Strain 251 on Overseeded Bermudagrass Infested with Belonolaimus longicaudatus

摘要

Belonolaimus longicaudatus is an important parasite of both warm-season bermudagrass and winter overseed grasses used on golf courses in the southeastern United States.Field trials were conducted to study the effects of a commercial formulation of Paecilomyces lilacinus strain 251 applied to overseed grasses during the winter and early spring on population density of B.longicaudatus and bermudagrass health in late spring after bermudagrass broke dormancy.These studies found that P.lilacinus reduced numbers of B.longicaudatus in most cases, but not below damaging levels.Multiple applications of 1 3 1010 spores/m2 were generally more effective than 2 3 1010 spores/m2 in reducing nematode numbers and improving turf roots.These results indicate that application of this formulation of P.lilacinus strain 251 to overseeded turf in the spring may be a useful integrated pest management tool for B.longicaudatus on bermudagrass, but is not suf?cient as a stand-alone nematode management tactic.