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Use of Alum and Grain Dust Waste for the Reduction of Bacterial Transport on Soil Surface

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Applied Engineering in Agriculture. 33(1): 91-94. (doi: 10.13031/aea.11637) @2017
Authors:   Jamal Abu-Ashour, Nisreen Al-Hmoud
Keywords:   Alum, Bacteria, Grain Dust Waste, Soil, Survival, Transport.

Abstract.

Soil treatments for controlling bacterial mobility was investigated. Three pairs of 15-m furrows were dug in a nearly flat field. Two pairs were treated with alum or grain dust waste, while the last pair received no treatment. A biotracer bacterium (nalidixic acid-resistant NAR) was applied at the upstream 2 m of each of the six furrows. After 24 h, water was applied at the upstream end of each of the furrows until they were flooded. Soil samples were collected the next day from the soil surface at 2 m distances along each furrow. Analysis of soil samples showed that biotracer cells were transported to distances of 8 and 6 m downstream in furrows treated by alum and grain dust waste, respectively. No biotracer cells were found beyond these distances. On the other hand, biotracer cells were found in all soil samples along the furrows that received no treatment. The soil treatments used reduced bacterial mobility.

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