It has been reported that entompathogenic nematodes including Heterorhabditis megidis and Steinernema kraussei are effective against the black vine weevil Otiorhynchus sulcatus infesting strawberry fields (Haukeland and Lola-Luz, 2010). It has been suggested that the soil type and soil temperature plays a significant role in efficacy of these nematodes against the black vine weevil. It is also noted that H. megidis performs better at soil temperatures above 10oC and S. kraussei at below 10oC. References:
Haukeland, S. and Lola-Luz, T. 2010. Efficacy of the entomopathogenic nematodes Steinernema kraussei and Heterorhabditis megidis against the black vine weevil Otiorhynchus sulcatus in open field-grown strawberry plants. Agricultural and Forest Entomology.12363-369