Journal of Food, Agriculture and Environment




Vol 1, Issue 2,2003
Online ISSN: 1459-0263
Print ISSN: 1459-0255


Occurrence of gastrointestinal pathogens in soil of potato field treated with liquid dairy manure


Author(s):

Ching-Hsing Liao 1*, C. Wayne Honeycutt 2, Tim S. Griffin 2, John M. Jemison 3

Recieved Date: 2002-11-11, Accepted Date: 2003-03-12

Abstract:

In parallel with a study of liquid dairy manure (LDM) effects on potato (Solanum tuberosum) production, an investigation was conducted to monitor the occurrence of three major foodborne pathogens in soil amended with LDM under field conditions. LDM was added prior to planting potatoes in experimental plots (randomized complete block design, 5 replications) in 1999 and in 2000. Soil samples were collected periodically from plots treated with or without LDM and analyzed for the presence of Listeria monocytogenesSalmonella sp., generic Escherichia coli, and E. coli O157:H7. In the 1999 potato-growing season, L. monocytogenes was consistently detected in LDM-treated, but not in untreated, soil samples during the first six weeks after LDM application. However, L. monocytogenes became undetectable approximately ten weeks after LDM application. A rapid decline in the number of generic E. coli, from 292 cfu g-1 soil in June to 10 cfu g-1 soil in July, was also observed. Salmonella and E. coli O157:H7 were not detected in 120 soil and potato samples analyzed. In the 2000 potato-growing season, no pathogen was detected in 60 soil and potato samples analyzed, although generic E. coli was detected once at a very low level (2 cfu g-1 soil). This study indicates that L. monocytogenes can be present in soils during the first 40 to 70 days after LDM application.

Keywords:

Listeria monocytogenes, survival, dairy manure, soil, potato contamination


Journal: Journal of Food, Agriculture and Environment
Year: 2003
Volume: 1
Issue: 2
Category: Agriculture
Pages: 224-228


View full PDF
Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.


Purchase this Article:   20 Purchase PDF Order Reprints for 15

Share this article :