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Diversity and seasonal variation of insect pests of Jatropha in Gaborone, Botswana

Published online by Cambridge University Press:  24 September 2018

Masego Masukujane ,
Tidimalo Coetzee ,
Robert Bob Ngwanathebe ,
Yudai Ishimoto  and
Kinya Akashi
Masego Masukujane
Affiliation:
Department of Agricultural Research, Ministry of Agriculture, Private Bag 0033, Gaborone, Botswana
Tidimalo Coetzee
Affiliation:
Department of Biological Sciences, University of Botswana, Private Bag UB 00704, Gaborone, Botswana
Robert Bob Ngwanathebe
Affiliation:
Department of Agricultural Research, Ministry of Agriculture, Private Bag 0033, Gaborone, Botswana
Yudai Ishimoto
Affiliation:
Faculty of Agriculture, Tottori University, 4–101 Koyama-cho, Tottori City 680–0945, Japan Japan International Cooperation Agency (JICA/JOCV) Botswana Office, Private Bag 00369, Gaborone, Botswana
Kinya Akashi*
Affiliation:
Faculty of Agriculture, Tottori University, 4–101 Koyama-cho, Tottori City 680–0945, Japan
*
*E-mail: akashi.kinya@muses.tottori-u.ac.jp
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Abstract

Jatropha curcas L. is a stem-succulent shrub that produces high concentrations of seed oils that are convertible into biodiesel. In this study, the incidence of four insect pests on Jatropha, Strabala rufa, Gnathamitermes tubiformans, Pempelia morosalis, and Acanthoplus discoidalis was recorded over three years in a semi-arid climate in Gaborone, Botswana. The occurrence of these insects was concentrated in the summer season from October to April, while lower numbers of all species were found in May as the temperature began to reduce towards the winter season, suggesting that insect pests of Jatropha exhibit a unique temporal pattern in this region. A considerable variation was observed among Jatropha accessions regarding the insect pest occurrence, indicating a vast difference in the susceptibility to insect pests among Jatropha accessions.

Keywords

JatrophaBotswanainsect pestarid region
Type
Research Paper
Information
International Journal of Tropical Insect Science , Volume 38 , Issue 4 , December 2018 , pp. 294 - 298
Copyright
Copyright © icipe 2018 

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