Screening for highly effective isolates of Bacillus thuringiensis against Spodoptera exempta and Spodoptera littoralis

M. Hamal*, M. Brownbridge, M. Broza, B. Sneh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Several new isolates of Bacillus thuringiensis Berliner have shown significantly higher levels of insecticidal activity than the previous best isolates (Bt24- entomocidus and IH-A- aizawai) against both Spodoptera littoralis Boisd. and Spodoptera exempta Walker. The best ones, in the following descending order of potency, were: against S. littoralis — K26–21, MF4B–2, MR1–37, K28–30, K26–8; against S. exempta — Bt-3, K30–3, HD-133, MR1–37, Bt-17, K26–8, K26–21, MF4B-2, HD-593. Larvae of S. exempta were considerably more susceptible (4.12–1.25 fold) to some of the isolates (Bt-3, K30–3, HD-133, MR1–37, Bt-17, K26–8, HD-593) than S. littoralis.

Original languageEnglish
Pages (from-to)9-21
Number of pages13
JournalPhytoparasitica
Volume19
Issue number1
DOIs
StatePublished - Mar 1991

Keywords

  • Bacillus thuringiensis
  • Spodoptera exempta
  • Spodoptera littoralis
  • biological control

Fingerprint

Dive into the research topics of 'Screening for highly effective isolates of Bacillus thuringiensis against Spodoptera exempta and Spodoptera littoralis'. Together they form a unique fingerprint.

Cite this