Effects of the herbicides simazine and bromophenoxim on the microflora of two soil types in Egypt.

The effects of the herbicides simazine and bromophenoxim on the microflora of two soil-types were studied. It was found that the effects produced on the microbial biomass depended on the type and concentration of the herbicide used and the nature of soil treated. It was also found that the application of these herbicides to the studied soils caused significant alterations in the species composition of its microflora. These alterations were detected by the disappearance or appearance of certain species under a specific concentration of the used herbicide. Species density was also affected.