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David Hansson &Sven-Erik Svensson 2011-03-28 Swedish University of Agricultural Sciences, Alnarp.

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Presentation on theme: "David Hansson &Sven-Erik Svensson 2011-03-28 Swedish University of Agricultural Sciences, Alnarp."— Presentation transcript:

1 David Hansson &Sven-Erik Svensson Swedish University of Agricultural Sciences, Alnarp

2 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson &Sven-Erik Svensson Swedish University of Agricultural Sciences, Alnarp Effect of flame weeding at different time intervals before crop emergence

3 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson Project: Effective weed management in row- grown organic vegetables Participatory research The experiments were designed and analysed etc. after a discussion with: farmers, advisers and researchers The experiments were performed on 3 different farms

4 Participatory research Exchange of experience between farmers, advisers and researchers. Participatory research gives more solutions and faster changes. Present issues are in focus which gives a greater engagement. Participatory research involves a holistic approach to solve problems. The hole group is responsible to ask questions, analyse and participate. David Hansson & Sven-Erik Svensson Swedish University of Agricultural Sciences, Alnarp

5 Område Jordbruk - odlingssystem, teknik och produktkvalitet Weed management system Time False seedbed Seedbed preparation False seedbed Sowing Delayed sowing Flame weeding Emergence

6 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson Organic grow carrots

7 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson

8 Experimental plan Experimental treatments, flame weeding: 2 days before (beginning) emergency 1 day before emergency 0 day at emergency 2 days after emergency Untreated control (unflamed) David Hansson Swedish University of Agricultural Sciences, Alnarp

9 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson Picture 31 May, 2&1 days before flaming

10 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson Picture 31 May, 1&5 days before flaming

11 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson Assessment 20 June, a few days before hand weeding

12 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson Unflamed control

13 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson Flame weeding 2 days before beginning emergency

14 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson Flame weeding 1 day before beginning emergency

15 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson day at beginning of emergency

16 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson days after beginning emergency

17 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson

18 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson Hand weeding 29 days after drilling, no. carrots at the time of flaming

19 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson One day postponed flaming resulted in; 10 % increased weed control effect, h per hectare reduced need for hand weeding.

20 Område Jordbruk - odlingssystem, teknik och produktkvalitet

21 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson Assessment 26 June Weed number a few days before hand weeding

22 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson Weed number a few days before hand weeding If flaming before crop emergence was delayed by; 3 days, the amount of weeds at the time of hand weeding was reduced by half. 2 days, the amount of weeds at the time of hand weeding was decreased by one-third.

23 Område Jordbruk - odlingssystem, teknik och produktkvalitet David Hansson


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