Qualidade da ?gua utilizada para pulveriza??o agr?cola

The use of water in agricultural spraying can cause the low integrity of the physico-chemical characteristics. The objective of this work is to analyze a water quality in the municipalities of Jacutinga and Ponte Preta in the northern region of Rio Grande do Sul, and a recipe for the contamination of pesticides via the surface and water table, and greater efficiency of pesticides applied to agricultural spraying. Biweekly samples of water were collected during the months of January to August of 2016. Being the pure water base as analyzes of pH, electrical conductivity and water hardness, and in the premixtures of pesticides carried out in the laboratory of Fronteira Sul Federal University, being made as samples of pH and electrical conduit. (1) insecticidacipermethrin: (2) fungicide-epoxiconazole; (3) insecticide-cypermethrin + fungicide-epoxiconazole; (4) herbicide-glyphosate; (5) herbicide-2,4 D; (6) herbicide-glyphosate + herbicide-2,4 D; (7) herbicide-glyphosate + insecticide-cypermethrin; (8) herbicide-glyphosate + Fungicide-Epoxiconazole; (9) herbicide-glyphosate + insecticide-cypermethrin + fungicide-epoxiconazole; (10) herbicide-glyphosate + herbicide-2,4 D + insecticide-cypermethrin + fungicide-epoxiconazole. 50 mL of water without laboratory water was used for a preparation of the water quality analyzes, and triplicate for a determination. The design was completely randomized, with three replicates. It was concluded that in the analysis of pure water quality there were no variations without period evaluated. In Table 1, the evaluation of electrical conductivity, the insecticide cypermethrin had differences in source as sources and in the composition of pesticides, or fungicide epoxiconazole had difference between as water sources. And in its mixture between the insecticide cypermethrin and the fungicide epoxiconazole had difference between as water sources, already glyphosate herbicides and the 2,4 D acid reduced drastically the electrical conductivity. In table 2 of the evaluation of pH or insecticide cypermethrin, there was no differentiation as sources and in the composition of pesticides, already fungicide epoxiconazole there was variation between a composition of pesticides. In relation to the mixture of cypermethrin and epoxiconazole there was no difference between sources and or composition of the pesticides in the treatments, according to the variations between a composition of the individual pesticides and their mixture.O uso da ?gua na pulveriza??o agr?cola poder? ocasionar a baixa integridade das caracter?sticas f?sico-qu?micas. O objetivo deste trabalho foi analisar a qualidade da ?gua nos munic?pios de Jacutinga e Ponte Preta na regi?o norte do Rio Grande do Sul, e proporcionar uma diminui??o da contamina??o de agrot?xicos via len?ol fre?tico e superficial, e maior efici?ncia dos agrot?xicos aplicados na pulveriza??o agr?cola. Foram coletadas amostras quinzenais de ?gua durante os meses de janeiro ? agosto de 2016. Sendo utilizada a ?gua pura para as an?lises de pH, condutividade el?trica e dureza da ?gua, e nas pr? - misturas de agrot?xicos realizadas no laborat?rio da Universidade Federal Fronteira Sul, sendo feitas as amostras de pH e condutividade el?trica. (1) inseticida-cipermetrina: (2) fungicida-epoxiconazol; (3) inseticida-cipermetrina + fungicida-epoxiconazol; (4) herbicida-glyphosate; (5) herbicida-2,4 D; (6) herbicida-glyphosate + herbicida-2,4 D; (7) herbicida-glyphosate + inseticida-cipermetrina; (8) herbicida-glyphosate + Fungicida-Epoxiconazol; (9) herbicida-glyphosate + inseticida-cipermetrina + fungicida-epoxiconazol; (10) herbicida-glyphosate +herbicida-2,4 D + inseticida-Cipermetrina + fungicida-epoxiconazol. Foi usado 50 mL de ?gua no laborat?rio da uffs, para a prepara??o das an?lises da qualidade da ?gua, e posteriormente triplicadas para a determina??o. O delineamento utilizado foi o inteiramente casualizado, com tr?s repeti??es. A an?lise da qualidade da ?gua pura n?o teve varia??es no per?odo avaliado. A avalia??o da condutividade el?trica, o inseticida cipermetrina teve diferen?a na entre as fontes e na composi??o dos agrot?xicos, o fungicida epoxiconazol teve diferen?a entre as fontes de ?gua. E na sua pr?-mistura entre o inseticida cipermetrina e o fungicida epoxiconazol teve diferen?a entre as fontes de ?gua, j? os herbicidas glyphosate e o ?cido 2,4 D reduziram drasticamente a condutividade el?trica. A avalia??o do pH o inseticida cipermetrina, n?o teve diferen?a entre as fontes e na composi??o dos agrot?xicos, j? o fungicida epoxiconazol houve varia??o entre a composi??o dos agrot?xicos. Em rela??o a pr?-mistura de cipermetrina e epoxiconazol n?o teve diferen?a entre as fontes e nem pela composi??o dos agrot?xicos, nos tratamentos seguintes houve varia??es entre a composi??o dos agrot?xicos individuais e na sua pr?-mistura