HALOXYFYMETHYLESTER+

Modern agriculture and industries are dependent on a variety of synthetic chemical compounds, including pesticides. Their extensive exploitation has resulted in the contamination of natural environment. This study investigates the effects of the combination these two chemicals, Haloxyfop-R-methyl ester + Dichlorvos, on nitrifying bacteria populations, specifically Nitrosomonas sp and Nitrobacter sp, within soil samples. Random collection of soil samples was collected from the University of Benin farmland sprayed with the appropriate dosage of the combined chemicals. The soil samples were obtained from four points. This research spanned a 28-day period, with sampling conducted at day 0, day 14, and day 28. Isolation of Nitrosomonas sp and Nitrobacter sp using Winogradsky medium 1 and 2 involved culturing diluted soil samples in Winogradsky 1 and 2 media. The study results showed a Nitrosomonas count of 3×103 ± 424.26 and Nitrobacter count of 8.6×103 ±
2262.74.