Modeling pesticide translocation injected by endotherapy into the stem of coconut tree (Cocos nucifera L.)
| Autor: | Lourival C. Paraiba, Joana M. S. Ferreira, Vera L. Ferracini, Semiramis R. R. Ramos, Antonio L. Cerdeira, Marcia R. Assalin, Ricardo A. A. Pazianotto, Agnaldo J. Santos, Carolina C. M. Paraiba |
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| Přispěvatelé: | LOURIVAL COSTA PARAIBA, CNPMA, AGNALDO JOSÉ DOS SANTOS, UNIVERSIDADE FEDERAL DE ALAGOAS, JOANA MARIA SANTOS FERREIRA, CPATC, VERA LUCIA FERRACINI, CNPMA, SEMIRAMIS RABELO RAMALHO RAMOS, CNAT, ANTONIO LUIZ CERDEIRA, CNPMA, MARCIA REGINA ASSALIN, CNPMA, RICARDO ANTONIO ALMEIDA PAZIANOTTO, CNPMA, CAROLINA COSTA MOTA PARAÍBA, UNIVERSIDADE FEDERAL DA BAHIA. |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Fate and transport models
Fungicida dispersion-advection equation Agrotóxico food and beverages Translocação Mathematical models Contaminação Translocation (plant physiology) Environmental impact Metalaxyl Coco Impacto Ambiental Coconuts pesticide application technique Modelo Matemático stipe-sap partition coefficient Agronomy and Crop Science mass spectrometry Fungicides |
| Zdroj: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA Spanish Journal of Agricultural Research; Vol. 20 No. 2 (2022); e1002 Spanish Journal of Agricultural Research; Vol. 20 Núm. 2 (2022); e1002 SJAR. Spanish Journal of Agricultural Research instname |
| ISSN: | 2171-9292 |
| Popis: | Aim of study: To present a mathematical model to simulate the translocation of pesticides injected into coconut trees. Pesticide residues in water and coconut pulp were also evaluated.Area of study: The data were obtained in coconut plants of the Itaporanga Experimental Field, located in the Municipality of Itaporanga d'Ajuda, Sergipe State, Brazil.Material and methods: To estimate the effect of pesticide site-sap coefficients and retardation factors on translocation and its phytosanitary behavior and risk of contamination of coconut fruits, the stipe was modeled by a classic dispersion-advection equation. The pesticides cyproconazole, azoxystrobin, dimethoate, imidacloprid, metalaxyl, and thiamethoxam were injected into the coconut palm stipe. The method used to extract pesticide residues from pulp, water and coconut sap samples was based on the QuEChERS methodology with modifications.Main results: Simulations showed that (i) the pesticides dimethoate, metalaxyl, and thiamethoxan were the active ingredients showing the greatest potential for translocation in the sap of the coconut tree stem; (ii) the pesticides imidacloprid and metalaxyl translocated upward in the stipe, and more rapidly than pesticides abamectin and cyproconazole, which moved slower to the aerial part of coconut plants. In chromatography analysis, no pesticide residues were quantified in water and coconut fruit pulp samples of coconut trees injected with pesticides, after the evaluated intervals.Research highlights: The proposed model allowed us to observe that the translocation is inversely proportional to the sorption of the pesticide in the stem of coconut trees. Made available in DSpace on 2022-08-31T17:19:37Z (GMT). No. of bitstreams: 1 Paraiba-Modeling-pesticide.pdf: 1188413 bytes, checksum: d4a308d81672a8bfc7ad862e3d5ad878 (MD5) Previous issue date: 2022 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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