Article (Scientific journals)
Insecticidal effect of Jatropha curcas oil on the aphid Aphis fabae (Hemiptera: Aphididae) and on the main insect pests associated with cowpeas (Vigna unguiculata) in Niger
Abdoul Habou, Zakari; Haougui, A.; Mergeai, Guy et al.
2011In Tropicultura, 29 (4), p. 225-229
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Keywords :
Jatropha curcas oil; Toxicity; Insect pests; Beans; Cowpeas; Niger
Abstract :
[en] The insecticidal activity of Jatropha curcas has been evaluated on various crop pests. Oil concentrations of 0.5, 1, 2.5, 5, 10 and 15% were first tested on the black bean aphid (Aphis fabae Scop.) as part of an efficacy test conducted in the laboratory. During a second stage, the insecticidal efficacy of 5 and 7.5% oil concentrations was evaluated on the main pests infesting cowpea crops (Vigna unguiculata L.) as part of a field test conducted at the University of Niamey (Niger). The results obtained in the two tests demonstrate the biocidal effect of the treatments applied, which increases with the concentration. On the black bean aphid, the biocidal effect increases during the hours following the application of oil before reaching a peak after 4 days. On cowpeas, J. curcas oil concentrations of 5% and 7.5% make it possible to reduce the level of attack by aphids (Aphis craccivora) by 10 and 50% respectively compared to the control. A 50% and 75% fall in the number of thrips (Megalurothrips sjöstedti) and bugs (Anoplocnemis curvipes), respectively, can be observed under the same conditions. This treatment made it possible to greatly increase yields compared to the untreated control.
Disciplines :
Entomology & pest control
Author, co-author :
Abdoul Habou, Zakari
Haougui, A.
Mergeai, Guy ;  Université de Liège - ULiège > Sciences agronomiques > Phytotechnie tropicale et horticulture
Haubruge, Eric  ;  Université de Liège - ULiège > Services administratifs généraux > Vice-Recteur de Gembloux Agro Bio Tech
Toudou, Adam
Verheggen, François  ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Language :
English
Title :
Insecticidal effect of Jatropha curcas oil on the aphid Aphis fabae (Hemiptera: Aphididae) and on the main insect pests associated with cowpeas (Vigna unguiculata) in Niger
Publication date :
2011
Journal title :
Tropicultura
ISSN :
0771-3312
eISSN :
2295-8010
Publisher :
Agri-Overseas, Bruxelles, Belgium
Volume :
29
Issue :
4
Pages :
225-229
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
CUD - Commission Universitaire pour le Développement [BE]
Available on ORBi :
since 02 March 2012

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