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A system to evaluate the performance of hydraulic nozzles used in stored grain preotection trials Scientia Agricola
Vásquez-Castro,Javier A.; Baptista,Gilberto C. de; Gadanha Jr.,Casimiro D.; Trevizan,Luiz R.P..
We developed a system to evaluate the performance of hydraulic nozzles used in stored corn and wheat grain protection experiments. An insecticidal mix was used as test fluid to determine the transversal volumetric distribution and droplets spectrum of a model TJ-60 8002EVS hydraulic nozzle. A mobile application system was built to apply a rate equivalent to 5 L t-1 and obtain theoretical concentrations of 10 and 0.5 mg kg-1 of fenitrothion and esfenvalerate, respectively. The corn and wheat grains were spread out as a fine layer. Three glass slides (0.1 × 0.05 m) were placed on the top surface of the grains to ensure that the intended application rate was achieved. After treatment, the deposits on both matrices were analyzed by gas chromatography. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Application technology; Gas chromatography; Insecticide deposits; Corn; Wheat.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000600001
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