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Hansander, Anna, 2012. Risk för spridning av ogräsfrö med rötrester : en litteraturstudie. First cycle, G2E. Uppsala: SLU, Dept. of Crop Production Ecology



With an increasing production of biogas follows an increased amount of digestate. This could potentially be a valuable source of fertiliser with the destruction of weed seeds as a possible advantage. However, there have been some concerns regarding the product still containing viable seeds of weed.

In this Bsc thesis the results of previous research on the fate of weed seeds in biogas production is summarized. It is also a comparison of research on the effect of similar processes such as silage, compost or animal passage on seeds. The purpose of this is to evaluate risks of spreading viable seeds, potentially problematic species and perhaps to find out how to eliminate the risks.

The literature review revealed that previous research mainly indicates low risks regarding many of the tested weed species, but not all studies show the same result, therefore extended research on the subject is desirable. The similar processes were, of course, complicated
and differed in some aspects from biogasproduction. It was in many cases difficult to conclude what actually killed the seeds which made the comparison of the different processes problematic.

Main title:Risk för spridning av ogräsfrö med rötrester
Subtitle:en litteraturstudie
Authors:Hansander, Anna
Supervisor:Andersson, Lars
Examiner:Boström, Ullalena
Volume/Sequential designation:UNSPECIFIED
Year of Publication:2012
Level and depth descriptor:First cycle, G2E
Student's programme affiliation:NY003 Agricultural Programme - Soil/Plant 270 HEC
Supervising department:(NL, NJ) > Dept. of Crop Production Ecology
Keywords:weed, seed, viability, germinability, biogas
Permanent URL:
Subject. Use of subject categories until 2023-04-30.:Plant ecology
Plant diseases
Deposited On:23 Aug 2012 07:06
Metadata Last Modified:09 Oct 2018 10:12

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