Open AccessTranslocation of pesticides in coconut palm by endotherapy with the addition of different adjuvants
Author(s) -
Jordana Alves Ferreira,
J. M. S. Ferreira,
Viviane Talamini,
Paulo Manoel Pontes Lins,
Samuel Christian Cohen Farias,
Carla Beatriz Grespan Bottoli
Publication year - 2020
Publication title -
ciência e natura
Language(s) - English
Resource type - Journals
eISSN - 2179-460X
pISSN - 0100-8307
DOI - 10.5902/2179460x34353
Subject(s) - cocos nucifera , carbofuran , pesticide , chemistry , citric acid , extraction (chemistry) , chromosomal translocation , chromatography , carbamate , palm , quechers , food science , pesticide residue , horticulture , biology , agronomy , organic chemistry , biochemistry , physics , quantum mechanics , gene
Commercial pesticides were selected, mixed and applied in coconut stems (Cocos nucifera Linn.) by endotherapy with various adjuvants. Tissue samples from the coconut stem were collected at different heights and days, and subjected to extraction and analysis by modified QuEChERS (“Quick, Easy, Cheap, Effective, Rugged and Safe") and UHPLC-MS/MS (ultra-high-performance liquid chromatography–tandem mass spectrometry). The translocations of 3-hydroxy-carbofuran, carbendazim, carbofuran, difenoconazole, imidacloprid, thiabendazole, thiamethoxam, thiophanate-methyl and spirodiclofen, using salts, citric acid and organosilicones as adjuvants, were evaluated and compared 2 and 30 days after the applications. The results showed that each pesticide had a different translocation profile, modified by the presence of the adjuvants. The most significant modifications were obtained using organosilicones, which enhanced the translocation process by 40% for most pesticides, followed by acidification (30%) and the addition of salts (22%).