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Effects of weed management practices on enteric pathogen transfer into lettuce (lactuca sativa var. capitata)

Fischer-Arndt, Meike; Neuhoff, Daniel; Tamm, Lucius and Köpke, Ulrich (2010) Effects of weed management practices on enteric pathogen transfer into lettuce (lactuca sativa var. capitata). Food Control, 21, pp. 1004-1010.

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Summary

We evaluated the effect of using farmyard manure (FYM) in combination with four weed control techniques on the hygienic quality of lettuce. Treatments with six replications included the application of fresh FYM on the soil combined with hand-hoeing (assumed high-risk) and fresh FYM incorporation combined with plastic mulch (assumed low risk). The experiment was repeated twice per season over two years at Bonn University, Germany. The amounts of enteric bacteria in all treatments were within the acceptable limits. Enterococcus was detected in the majority of the samples in concentrations up to 3.7 log10 CFU/g. The Escherichia coli contents of lettuce ranged between n.d. and 103 CFU/g. There was no consistent effect suggesting a specific risk linked to one of the experimental treatments. We conclude that weeding techniques did not increase the risk of exposure to E. coli when FYM is used for fertility in organic production systems.
(c) Elsevier


EPrint Type:Journal paper
Keywords:Farmyard manure, FYM, Hygienic quality, Enteric bacteria, Pflanzenschutz und Biodiversität, Pathologie, Bodenfruchtbarkeit, Beikrautregulierung
Subjects: Food systems > Food security, food quality and human health
Crop husbandry > Weed management
Research affiliation: Germany > University of Bonn > Institute of Organic Agriculture
European Union > QualityLowInputFood > Subproject 3: Crop production systems
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Plant Protection and Biodiversity
Related Links:http://www.sciencedirect.com/science/article/pii/S0956713509003454
Deposited By: Forschungsinstitut für biologischen Landbau, FiBL
ID Code:18932
Deposited On:16 Jun 2011 10:25
Last Modified:16 Jun 2011 10:25
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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