TY - JOUR
T1 - Control efficacy of pongam (Pongamia pinnata L.) leaf extract against the turnip aphid Lipaphis pseudobrassicae (Davis) (Hemiptera: Aphididae)
AU - Tran, Dang Hoa
AU - Le, Khac Phuc
AU - Tran, Hoang Dong Thi
AU - Ueno, Takatoshi
PY - 2016/2
Y1 - 2016/2
N2 - The turnip aphid Lipaphis pseudobrassicae (Davis) is considered a cosmopolitan pest of cruciferous crops. It removes photoassimilates from the crops and is responsible for transmitting a number of plans viruses. Control of the turnip aphid is important in stable production of cruciferous crops. The present study was carried out to determine the efficacy of leaf extract from the pongam tree Pongamia pinnata L. against the turnip aphid. In laboratory tests, pongam leaf extract showed acute toxicity to the turnip aphid; the LC50 values were 0.585%, 0.151% and 0.113% at 24, 48 and 72 hours, respectively. Laboratory observations also indicated that low concentrations of pongam leaf extract caused significant reduction of vitality and fertility of the turnip aphids of the subsequent generation and thus caused an indirect reduction of overall pest numbers in the next generation. Pongam leaf extract has thus nonlethal chronic toxicity. Therefore, pongam leaf extract can be recommended as an organic-based pesticide to manage the turnip aphid.
AB - The turnip aphid Lipaphis pseudobrassicae (Davis) is considered a cosmopolitan pest of cruciferous crops. It removes photoassimilates from the crops and is responsible for transmitting a number of plans viruses. Control of the turnip aphid is important in stable production of cruciferous crops. The present study was carried out to determine the efficacy of leaf extract from the pongam tree Pongamia pinnata L. against the turnip aphid. In laboratory tests, pongam leaf extract showed acute toxicity to the turnip aphid; the LC50 values were 0.585%, 0.151% and 0.113% at 24, 48 and 72 hours, respectively. Laboratory observations also indicated that low concentrations of pongam leaf extract caused significant reduction of vitality and fertility of the turnip aphids of the subsequent generation and thus caused an indirect reduction of overall pest numbers in the next generation. Pongam leaf extract has thus nonlethal chronic toxicity. Therefore, pongam leaf extract can be recommended as an organic-based pesticide to manage the turnip aphid.
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U2 - 10.5109/1564095
DO - 10.5109/1564095
M3 - Article
AN - SCOPUS:84978127633
SN - 0023-6152
VL - 61
SP - 141
EP - 145
JO - Journal of the Faculty of Agriculture, Kyushu University
JF - Journal of the Faculty of Agriculture, Kyushu University
IS - 1
ER -