TY - JOUR
T1 - Screening for highly effective isolates of Bacillus thuringiensis against Spodoptera exempta and Spodoptera littoralis
AU - Hamal, M.
AU - Brownbridge, M.
AU - Broza, M.
AU - Sneh, B.
PY - 1991/3
Y1 - 1991/3
N2 - 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.
AB - 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.
KW - Bacillus thuringiensis
KW - Spodoptera exempta
KW - Spodoptera littoralis
KW - biological control
UR - http://www.scopus.com/inward/record.url?scp=0002717306&partnerID=8YFLogxK
U2 - 10.1007/BF02981007
DO - 10.1007/BF02981007
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AN - SCOPUS:0002717306
SN - 0334-2123
VL - 19
SP - 9
EP - 21
JO - Phytoparasitica
JF - Phytoparasitica
IS - 1
ER -
