Effects of some inorganic fertilizers on the entomopathogenic nematodes Steinernema feltiae (Tur-S3) and Heterorhabditis bacteriophora (HBH)


Şahin Y. S.

Türkiye Biyolojik Mücadele Dergisi, vol.9, no.2, pp.73-81, 2018 (Peer-Reviewed Journal)

  • Publication Type: Article / Article
  • Volume: 9 Issue: 2
  • Publication Date: 2018
  • Journal Name: Türkiye Biyolojik Mücadele Dergisi
  • Journal Indexes: TR DİZİN (ULAKBİM)
  • Page Numbers: pp.73-81
  • Bursa Uludag University Affiliated: No

Abstract

Entomopathogenic nematodes (EPNs) are used effectively in biological control because of their virulence against soil dwelling pests, long-term efficacy and harmlessness to the environment. EPNs spend most of their life in the soil and have host- finding behavior. They can be affected by agricultural activities such as fertilization, tillage and irrigation. The objective of this study was to determine the direct effects of inorganic fertilizers on EPNs. For this purpose, 6 inorganic fertilizers used extensively in agriculture and two species of EPN (Steinernema feltiae Tur-S3 and Heterorhabditis bacteriophora HBH) were selected for the study. They were exposed to 1 gr/l, 5 gr/l and 10 gr/l fertilizer doses under laboratory conditions and checked for mortality for 10 days. Steinernema feltiae (Tur-S3) was more resistant to inorganic fertilizers than H. bacteriophora HBH, and DAP, NPK and NP had more adverse effects than the other fertilizers on both strains.