Potential of using entomopathogenic nematodes in the management of diamondback moth Plutella xylostella (L.) (Lepidoptera:Plutellidae) in Kenya
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Date
2007Author
Nyasani, J O
Kimenju, J W
Olubayo, F M
Type
ArticleLanguage
enMetadata
Show full item recordAbstract
Laboratory studies were conducted on diamondback moth (DBM) larvae,
Plutella xylostella
(Linnaeus)
(Lepidoptera: Plutellidae) using five different entomopathogenic nematodes (EPNS) isolates obtaine
d from National
Agricultural Research Laboratories, Kenya. The DBM larvae were obtained from field collections at Kabete Campus
Field Station
.
The exposure time fifty
(
ET
50
)
of the entomopathogenic nematode isolates to DBM larvae was
determined by leaf dis
c bioassay method. All the entomopathogenic nematode isolates tested caused mortality to the
DMB larvae
.
The ET
50
of
Steinernema karii
was significantly higher than that of
Heterorhabditis indica
and
Steinernema waiseri
(
95%
fiducial limits at
1%
level
).
Th
e ET
50
of the entomopathogenic nematodes tested ranged
from
20.27
to
38.12
hours
.
The effect of time on the percentage mortality was significant
(
d
.
f
=
2,214
;
F
=
<
0.001
).
Average penetration rate for
Heterorhabditis
sp.
, Steinernema
sp.,
Steinernema kari
i, Heterorhabditis indica, and
Steinernema waiseri
was
19.17%
31.67%
27.17%
46.41%
and
75%
respectively
This study revealed that
entomopathogenic nematodes (EPNs) have a great potential that should be exploited in diamondback moth
management
URI
http://www.acss.ws/Upload/XML/Research/403.pdfhttp://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/36925
Citation
African Crop Science Conference Proceedings Vol 8.pp.1063-1066 2007Publisher
University of Nairobi. Department of Crop protection