Effectiveness of Entomopathogenic Hyphomycetes Towards Controlling the Broad Mite, Polyphagotarsonemus Latus (Banks) and the Red Spider Mite, Tetranychus Urticae Koch Complex
he red spider mite, Tetranychus urticae Koch Complex and the broad mite, Polyphagotarsonemus latus (Banks) are serious pests on many agricultural and ornamental crops. They are distributed worldwide and polyphagous on vegetables especially those under shelter and fruit crops. In Malaysia strawbe...
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| Format: | Thesis |
| Language: | English English |
| Published: |
2003
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/10679/1/FP_2003_30.pdf |
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| Summary: | he red spider mite, Tetranychus urticae Koch Complex and the
broad mite, Polyphagotarsonemus latus (Banks) are serious pests
on many agricultural and ornamental crops. They are distributed
worldwide and polyphagous on vegetables especially those under
shelter and fruit crops. In Malaysia strawberries are usually
damaged by the red spider mite while the broad mite is a serious
pest on chilli. Chemical insecticides have been the mainstay for
controlling these mites.
In recent year, the use of microbial control agent such as Bacillus
thuringiensis has become increasingly attractive as a biocontrol
agent and has become important as one of the biological control components in I PM programmes. In this respect, the potential of
entomopathogenic fungi including Beauveria bassiana (8als.) Vuill. ,
Metarhizium anisopliae (Metch) Sorokin and Paecilomyces
fumosoroseus (Wise) 8rown Smith were investigated as microbial
control agents against the red spider mite T. urticae and the broad
mite P. latus in the laboratory. Field efficacies of selected isolates i n
wettable powder formulations were also assessed against the
broad mite on chilli.
Pathogenicity tests indicated that the above mentioned three
isolates were able to cause significant mortalities on the larvae,
nymph and adult red spider mite T. urticae and broad mite P. latus.
Paecilomyces fumosoroseus (PfPp) was the most pathogenic
against the red spider mite followed by M. anisopliae (MaPs) and
B. bassiana (BbGc), while B. bassiana (8bGc) was the most
infective against broad mite followed by P. fumosoroseus (PfPp)
and M. anisopliae (MaPs). |
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