The effect of two herbicides, Glyphosate and Multrazine on the abundance and diversity of soil microarthropods (Mites and Collembolans) was assessed in a field experiment conducted from August to December, 2011 at the University of Port Harcourt, Nigeria. The herbicides were applied at varying doses of low (1.4 ml/m 2 active ingredient; a.i, standard (2.8 ml/m 2 a.i) and high (5.6 ml/m 2 a.i) for Glyphosate; and low (2.1 ml/m 2 a.i), standard (4.2 ml/m 2 a.i) and high (8.4 ml/m 2 a.i) for Multrazine; and control was included. The experiment was conducted in a split-plot design with six replicates arranged in a Randomized Complete Block Design. Moist soil samples were randomly collected from treated and control plots at the depths of 0-5 cm, 5-10 cm, 10-15 cm, and 15-20 cm, with an 8.5 cm 2 diameter bucket-type auger.
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