2024-03-29T15:54:15Zhttps://repositori.uji.es/oai/requestoai:repositori.uji.es:10234/1255882024-02-20T14:02:03Zcom_10234_2508com_10234_9col_10234_6999
00925njm 22002777a 4500
dc
Dembilio, Óscar
author
Riba, Josep M.
author
Gamón, Miquel
author
Jaques , Josep A.
author
2014
BACKGROUND: Rhynchophorus ferrugineus is the most destructive pest of palms. As detection of early infestation stages isdifficult, preventive measures, mostly chemical control, are crucial. Stipe injection of insecticides has developed rapidly asa suitable technique. However, pesticide movement within palms and palm reaction to wounding remain controversial. Weused abamec tin and imidacloprid applied by crown spray, stipe and frond injections to disentangle how these pesticides movewithin P. canariensis and how tissues wounded by injection heal. Furthermore, we established their lethal doses to larvae of R.ferrugineus.RESULTS: Maximum residues of imidacloprid (0.1 mg kg−1) were detected in crown and frond samples for up to 2 months afterstipe injection, whereas maximum residues of abamectin were found in frond tip samples (0.5 mg active substance kg−1)5months after stipe injection. Based on the lethal concentrations calculated, these doses could satisfactorily protect palms forup to 3 months after treatment. No significant wound damage was observed 2 years after injection.CONCLUSION: Stipe injection, irrespective of the active substance considered, resulted in better distribution and higherpersistence compared with frond injection and, especially, crown spray. As a consequence, our results point to stipe injection asa good alternative to control R. ferrugineus.
1526-498X
1526-4998
http://hdl.handle.net/10234/125588
http://dx.doi.org/10.1002/ps.3889
stipe injection
pesticides
lethal doses
mortality
Mobility and efficacy of abamectinand imidacloprid against Rhynchophorusferrugineus in Phoenix canariensis by differentapplication methods