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. 2008 Feb 27;3(2):e1657. doi: 10.1371/journal.pone.0001657

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This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration, which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

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Tomato seeds were sown at weekly intervals in S. enterica irrigated soil and S. enterica populations were enumerated at the seedling stage. Phyllosphere and rhizoplane populations were from seedlings planted one week before sampling. Averages from two experiments were calculated from log transformed data and error bars represent standard deviations. T-tests were preformed to determine average population changes over time for each type of sample. Different letters represent significant population changes (p<0.03).