Investigation of the Factors Affecting the Degradation of Expired Herbicides Stockpiles of Agricultural Supportive
Background And ObjectiveExpired pesticides are a major problem in many countries. Thus, we need to know the effective factors in pesticides degradation to prevent environmental damage of them. In many cases restructuring or demolition costs of the expired pesticides are more than their primary production.
MethodThis study investigated the possibility of applying the expired pesticides stockpiles of agricultural supportive services company. Quality control tests were performed according to the FAO, CIPAC and pesticide manufacturer's guidelines.
ResultsThe results were classified based on the different groups of pesticides, physical state of herbicides formulation, producing companies, date of production and location of warehouses. Data were analyzed by Chi-Square test, in case of significance. The risk test was performed to determine the relative risk for the variables using SPSS-18 software.
ConclusionResult showed a significant correlation between the time lagged after production of herbicides and degradation percentage of herbicides. The degradation percent of expired insecticides was highest and that of expiered herbicides and fungicides was at the second and third rank, respectively. The degradation percent of the expired herbicides formulated in the country was 52% and that of the expired herbicides formulated in India/China was 67%. The results show that 55% of the herbicides with liquid formulation and 26% of the herbicides with solid formulation were degraded. Considering the degradation rate of herbicides, there is no statistically significant difference between the warehouses at 4 climatic regions.
Journal of Environmental Sciences and Technology, Volume:18 Issue:3, 2017
599 - 614
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