Efficacy of locally available materials and biocontrol agents in the management of potato tuber moth (PTM) (Phthorimaea operculella) (Zeller) in the store
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Date
2011-09Author
Kilalo, D.
Were, S
Nderitu, J.
Olubayo, r.
Koech, AI
Language
enMetadata
Show full item recordAbstract
Potato (Solanum tuberosum) ranks as the second most important food crop
after maize playing an important role in national food security and income
generation in Kenya. Potato production is limited by pests and diseases with
potato tuber moth (PTM) being the most important insect pest in storage.
This study was conducted to evaluate locally available materials and biopesticides
for management of PTM. The experiment was conducted for two
seasons and was laid out in a complete randomized design with four replicates.
Potato tubers in store were treated with Carbaryl, Bacillus thuringiensis (Bt),
Beauvaria bassiana, rice husks, wood ash, sawdust, sand and with untreated
control. Mines caused by larvae were assessed to estimate PTM damage. The
average PTM Larval reduction varied; Carbaryl 98.5% emerged as the best in
controlling PTM recording the least damage in terms of mines and larval
infestation. Bt and rice husks 76% came second followed by wood ash 50% and
saw dust 50% all with significant effect on PTM over untreated control (p S;
0.001). Sand did not have a significant effect on PTM. Bt and rice husks are
effective alternatives to carbaryl in controlling PTM in store. Sawdust,
Beauvaria bassiana and wood ash have the potential to manage PTM in store.
These results provide alternatives that will enable farmers preserve both seed
and ware potato.
Citation
Optimimization of Agricultural Value Chains for sustainable DevelopmentSponsorhip
National Council of Science and Technology, The Kenya Seed CompanyPublisher
Faculty of Agriculture, University of Nairobi
Subject
Solanum tuberosum.PTM larvae
wood ash
Beauvaria bassiana
Sawdust
Rice husks
Bacillus thuringiensis
Description
Oral presentation at aGRO 2011 Biennial Conference