Frøseth, Randi Berland; Johannesen, Gro; Solemdal, Liv; Jarp, Jorunn; Wasteson, Yngvild and Rørvik, Liv Marit (2005) Bakteriologisk kvalitet av salat gjødsla med storfegjødsel. [Bacteriological quality of lettuce fertilized with cattle manure.] In: Heiberg, Nina; Sundheim, Leif and Munthe, Kari (Eds.) Plantemøtet Østlandet 2005, Planteforsk, Ås, Norway, 9 (2), Grønn kunnskap, pp. 205-212.
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Summary
Målet med denne undersøkinga var å samanlikna den bakteriologiske kvaliteten, inkludert førekomsten av visse patogen, av økologisk dyrka salat gjødsla med ulike typar storfegjødsel. Feltforsøk med isbergsalat ( Lactuca sativavar. Crispum, ’Iglo’) vart utført i 2001 og 2002. Behandlingane var blautgjødsel, fastgjødsel, kompostert storfegjødsel og mineralgjødsel. Prøvar av jord, gjødsel, gjødsla jord, oppalsplantar, salat og dei ytre blada av salatplantane (i 2002) vart analysert for indikatorbakteriar for fekal forureining (termotolerante koliforme bakteriar (TKB) og Escherichia coli), E. coli O157:H7, Salmonella spp. og L. monocytogenes. Det vart funne statistisk sikker forskjell mellom behandlingane i mengde TKB i gjødsla jord, men det vart ikkje funne noko forskjell i bakteriologisk kvalitet på salat ved hausting. I 2002 vart det funne E. coli O157:H7 i blautgjødsel og fastgjødsel, og jord gjødsla med blautgjødsel og fastgjødsel ei veke etter gjødsling. Bakterien vart ikkje funne på salat ved hausting. Ingen prøvar i undersøkinga inneheld Salmonella spp. eller L. monocytogenes. Resultata frå forsøket tyder på ingen forskjell i bakteriologisk kvalitet på økologisk dyrka isbergsalat gjødsla med ulike typar storfegjødsel.
Summary translation
The aim of this study was to compare the bacteriological quality, including the occurence of certain types og pathogens, og organic lettuce fertilized with different types of cattle manure. The field trial with Iceberg lettuce (Lactuca sativa var. Crispum, 'Iglo') was carried out in 2001 and 2002. The treatments were slurry, farm yard manure (FYM), composted cattle manure and mineral fertilizer. Samples of soil, manure, soil fertilized with manure, lettuce seedlings, lettuce and the outer leaves of the lettuce plants (in 2002) were analyzed for indicator bacteria of faecal contamination (thermotolerant coliform bacteria (TCB) and Escherichia coli O157:H7, Salmonella spp. and Listeria monocytogenes. The various treatments gave significantly different numbers of TCB isolated from manured soil, but no difference was found in lettuce at harvest. In 2002 E. coli O157:H7 was found in slurry and FYM, and in soil fertilized with slurry and FYM one week after fertilization. E. coli O157:H7 was not found on lettuce at harvest. Salmonella spp. and L. monocytogenes were not detected in any samples in the study. The results indicated that there is no difference in bacteriological quality of organic Iceberg lettuce manured with various types of cattle manure.
| EPrint Type: | Conference paper, poster, etc. |
|---|---|
| Type of presentation: | Paper |
| Keywords: | Escherichia coli O157:H7, indicator bacteria, lettuce, Listeria monocytogenes, manure, Salmonella spp., salat, gjødsel, bakterier, E coli |
| Subjects: | Food systems > Food security, food quality and human health Crop husbandry > Composting and manuring |
| Research affiliation: | Norway > NORSØK - Norwegian Centre for Organic Agriculture Norway > Other organizations |
| Deposited By: | Frøseth, Randi Berland |
| ID Code: | 5740 |
| Deposited On: | 28 Sep 2005 |
| Last Modified: | 12 Apr 2010 07:31 |
| Document Language: | Norwegian/Norsk |
| Status: | Published |
| Refereed: | Not peer-reviewed |
| Additional Publishing Information: | The Crop Research Conference consists of contributions from both organic and conventional agriculture. Only the organic contributions are listed in Organic Eprints. |
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