IMPACT OF SOIL TEXTURE ON THE INFECTIVITY OF DIFFERENT SPECIES OF ENTOMOPATHOGENIC NEMATODES AGAINST GREATER WAX MOTH (GALLERIA MELLONELLA L.)
Keywords:
Galleria mellonella, Heterorhabditis bacteriophora, H. indica, infectivity, soil texture, Steinernema asiaticum, S. feltiaeAbstract
Entomopathogenic nematodes (EPNs) are effective biological control agents against many soil-inhibiting insect pests. Different soil related factors have influence on the efficacy of these nematodes. The recent study was planned to evaluate the infectivity of four species of EPNs i.e. Heterorhabditis bacteriophora, H. indica, Steinernema feltiae and S. asiaticum in different soil textures (loamy sand, sandy loam and clay loam). The in vitro assessment of the infectivity was done by exposing last larval instar of Galleria mellonella to nematodes. The results revealed that the infectivity was the greatest in sandy loam soil (71.42%) followed by clay loam (54.75%), while it was the lowest in loamy sand (41.63%). Among all species examined, H. bacteriophora showed maximum infectivity (69.82%), followed by H. indica (52.36%), S. feltiae (52.36%) and S. asiaticum (49.19%) showing similar trends.Published
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