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Fingerprint Dive into the research topics where Janjo de Haan is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

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Netherlands Agriculture & Biology
organic production Agriculture & Biology
farming systems Agriculture & Biology
vegetable growing Agriculture & Biology
leeks Agriculture & Biology
farming system Earth & Environmental Sciences
organic farming Earth & Environmental Sciences
vegetables Agriculture & Biology

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Research Output 2000 2019

Bodemkwaliteitsbeoordeling van landbouwgronden in Nederland - indicatorset en systematiek, versie 1.0

Hanegraaf, M., van den Elsen, E., de Haan, J. & Visser, S., 2019, Wageningen. 18 p. (Rapport WPR; no. 795)

Research output: Book/ReportReportProfessional

Open Access

Conventional and organic soil management as divergent drivers of resident and active fractions of major soil food web constituents

Harkes, P., Suleiman, A. K. A., van den Elsen, S. J. J., de Haan, J. J., Holterman, M., Kuramae, E. E. & Helder, J., 18 Sep 2019, In : Scientific Reports. 9, 1, 13521.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
Food Chain
Soil
Carbon Cycle
Biodiversity
Fertilizers

Klimaat

de Haan, J. J., 2019, In : ViP - Van Iperen Magazine. 1, p. 7-7

Research output: Contribution to journalArticleProfessional

Open Access

Leek production in conventional and organic arable-vegetable rotations in the Netherlands

De Haan, J. J., Wesselink, M. & Verstegen, H. A. G., 2019, In : Acta Horticulturae. 1253, p. 351-358 8 p.

Research output: Contribution to journalArticleAcademicpeer-review

leeks
Netherlands
leaching
vegetables
surpluses

Activities 2006 2019

Biologische teelt op zandgrond: ervaringen uit het systeemonderzoek te Vredepeel

J.J. de Haan (Speaker), M. Wesselink (Speaker)
24 Jan 2019

Activity: Talk or presentationOral presentation

1-3 Uitwisselingsbijeenkomst bodemkwaliteitsinstrumenten

J.J. de Haan (Speaker), L.P.G. Molendijk (Contributor), M. Wesselink (Contributor)
10 Dec 2018

Activity: Talk or presentationPublic lecture/debate/seminar

Long-term Farming Systems Research in the SE of The Netherlands: Vredepeel

J.J. de Haan (Speaker), M. Wesselink (Speaker), H.A.G. Verstegen (Speaker)
22 May 2018

Activity: Talk or presentationOral presentation

Long-term effects of phosphate fertilization on crop yields, soil and leaching: Phosphate trial Lelystad

J.J. de Haan (Speaker), W.C.A. van Geel (Contributor), P.A.I. Ehlert (Contributor)
21 May 2018

Activity: Talk or presentationPublic lecture/debate/seminar

Press / Media

Meer organische stof betekent meer vocht

Marjoleine Hanegraaf & Janjo de Haan

11/05/19

1 item of media coverage

Press/Media: Expert Comment

Collectieve kennis vraagt nieuwe samenwerking

Janjo de Haan

31/01/19

1 item of media coverage

Press/Media: Expert Comment

Teelt de grond uit oplossing voor droogte?

Janjo de Haan

9/11/18

1 item of media coverage

Press/Media: Expert Comment

Telers kunnen meer uit groenbemesters halen

Janjo de Haan & Brigitte Kroonen-Backbier

30/08/18

1 item of media coverage

Press/Media: Expert Comment

Projects 2008 2021