Employee
 | Leen Janmaat BScSenior advisorT: +31(0)343 523860 (General) M: 06-44197920 |
Publication(s) by Janmaat
Articles in scientific journals (2)
Brochures, books & reports (20)
Specialist journal articles, leaflets, newsletters, etc (69)
Scientific publications |
 Nuijten, E., J. de Wit, L. Janmaat, A. Schmitt, L. Tamm and E.T. Lammerts van Bueren. 2017. Understanding obstacles and opportunities for successful market introduction of crop varieties with resistance against major diseases. Organic Agriculture (first online). DOI: 10.1007/s13165-017-0192-8  More information |
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 Cuijpers, W.J.M., A.W.G. van der Wurff and L. Janmaat. 2011. Innovative Intercropping System to Improve Soil Health in Organic Greenhouse Cultivation. Acta Horticulturae. 915:125-132. More information |
Brochures, books & reports |
 Staps, J.J.M., S. Tromp, H. Axmann and L. Janmaat. 2019. Efficient food chain: waste prevention: report 2015/2016. (In Dutch.). Louis Bolk Instituut, Bunnik. 60 p. Download full text pdf, 1,9 MB; opens in new window More information |
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 Koopmans, C.J., T. te Grotenhuis and L. Janmaat. 2018. Compostgebruik op Demeterbedrijven in beeld. Louis Bolk Instituut, Bunnik. 16 p. Download full text pdf, 5 MB; opens in new window More information |
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 Janmaat, L. 2017. Bio Duurzaam: Van goed naar beter. Louis Bolk Instituut, Bunnik. 28 p. Download full text pdf, 4,9 MB; opens in new window More information |
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 Luske, B. and L. Janmaat. 2016. Honeybees as a component on farms: How farmers and citizens can contribute to a flourishing countryside. (In Dutch.). Louis Bolk Instituut, Driebergen. 24 p. Download full text pdf, 1,6 MB; opens in new window More information |
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 Janmaat, L. 2015. Verwerken van maaisel voor landbouwkundig gebruik: Waarde van compost, bokashi en bermgraskuil als meststof. Louis Bolk Instituut, Driebergen. 39 p. Download full text pdf, 5 MB; opens in new window More information |
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 Cuijpers, W.J.M. and L. Janmaat. 2015. Digestate: Making use of nitrogen in biodigester waste. (In Dutch.). Rep. 2015‐029 LbP. Louis Bolk Instituut, Driebergen. 20 p. Download full text pdf, 2,4 MB; opens in new window More information |
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 Luske, B. and L. Janmaat. 2015. Bees on the farm: Working on a bee-friendly countryside. (In Dutch.). Louis Bolk Instituut, Driebergen. 28 p. Download full text pdf, 1,6 MB; opens in new window More information |
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 Hospers-Brands, A.J.T.M., G.J.H.M. van der Burgt and L. Janmaat. 2015. Cut green manures, on-farm and within the chain: Plant-based fertilizers in practice. (In Dutch, with English abstract.). 20 p. Order Price: €10; Order code:2015-004 LbP; opens in new window Download full text pdf, 2,3 MB; opens in new window More information |
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 Luske, B., A.J.T.M. Hospers-Brands and L. Janmaat. 2015. Establishment and management of field margins: weed suppression. (In Dutch.). Louis Bolk Instituut, Driebergen. 20 p. Download full text pdf, 1,6 MB; opens in new window More information |
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 Janmaat, L., B. Willems and L. Mertens. 2014. Wintergroenten.nl: Tips for growing vegetables under glass. (In Dutch, with English abstract.). Louis Bolk Instituut, Driebergen. 28 p. Download full text pdf, 3,2 MB; opens in new window More information |
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 Janmaat, L., C. Bloemhard and R. Kleppe. 2014. Biodiversity in the greenhouse: Food for aphid enemies. (In Dutch.). Louis Bolk Instituut, Driebergen. 20 p. Download full text pdf, 4,8 MB; opens in new window More information |
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 Cuijpers, W.J.M. and L. Janmaat. 2014. Compost compositions: Soil, fertilization and disease suppression. (In Dutch, with English abstract.). Louis Bolk Instituut, Driebergen. 20 p. Download full text pdf, 3,1 MB; opens in new window More information |
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 Koopmans, C.J. and L. Janmaat. 2014. Equivalency of the EKO label: Comparative study of European 'organic-plus' labels. (In Dutch.). Rep. 2014-015 LbP. Louis Bolk Instituut, Driebergen. 10 p. Download full text pdf, 0,66 MB; opens in new window More information |
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 Janmaat, L. and W.J.M. Cuijpers. 2012. Guide to a resistant soil. (In Dutch.). Rep. 2012-050 LbP. Louis Bolk Instituut, Driebergen. 12 p. Order Price: €0; Order code:2012-050 LbP; opens in new window Download full text pdf, 0,79 MB; opens in new window More information |
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 Cuijpers, W.J.M. and L. Janmaat. 2012. Organic greenhouse intercropping: Broadening crop rotations for a healthier soil. (In Dutch, with English abstract.). Rep. 2012-007 LbP. Louis Bolk Instituut, Driebergen. 42 p. Download full text pdf, 1,3 MB; opens in new window More information |
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 Nuijten, E., L. Janmaat and E.T. Lammerts van Bueren. 2012. New ways for breeding and selecting small scale crops: key elements for fruitfull cooperation in the chain. (In Dutch.). Rep. 2012-003 LbP. Louis Bolk Instituut, Driebergen. 34 p. Download full text pdf, 0,54 MB; opens in new window More information |
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 Wagenaar, J., L. Janmaat, M.W.P. Bestman, F. Leenstra, M. van Krimpen, C. Verwer, M. Groot, T. van Asseldonk and R. Paardekooper. 2012. Organic business: poultry. (In Dutch.). Louis Bolk Instituut, Driebergen. 28 p. Download full text pdf, 4,2 MB; opens in new window More information |
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 Janmaat, L. 2009. Biologisch telen doe je in de grond: Handleiding voor een vruchtbare kasbodem. Louis Bolk Instituut, Driebergen. 23 p. Download full text pdf, 4 MB; opens in new window More information |
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| Cuijpers, W.J.M., L. Janmaat and G.J.H.M. van der Burgt. 2008. Soil health in organic greenhouse, Part 2: Suppressiveness against soil borne fungi. (In Dutch, with English abstract.). Rep. LB25. Louis Bolk Instituut, Driebergen. 52 p. Download full text pdf, 1,8 MB; opens in new window More information |
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| Lammerts van Bueren, E.T., L. Janmaat and S.P.C. Groot. 2008. Uitgangsmateriaal voor smaakvolle producten: Kan plantaardig uitgangsmateriaal bijdragen aan de profilering van de biologische sector als leverancier van gezonde en smaakvolle producten? Rep. Plant Research International 250. Plant Research International, Wageningen. More information |
Specialist journal articles, newsletters, etc |
 Janmaat, L. 2017. Biologisch met kunst en vliegwerk: Verslag van een studiereis met glasgroentetelers naar Sicilië. Ekoland. maart, p. 30-31. Download full text pdf, 0,77 MB; opens in new window More information |
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 Janmaat, L. 2017. De Noorderhoeve: Synergie houdt gemengd landbouwbedrijf gaande. Ekoland. april, p. 20. Download full text pdf, 0,65 MB; opens in new window More information |
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 Janmaat, L. 2017. Oirschot Organics houdt van klein: Gezocht en gewenst: jonge ondernemer voor de teelt van en klanten voor afname van minigroenten. Ekoland. maart, p. 17-19. Download full text pdf, 1,1 MB; opens in new window More information |
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 Janmaat, L. 2017. Teeltrecepten voor nieuwe rassen: De strijd tegen phytophthora gaat altijd door, nieuwe rassen vragen extra aandacht van de telers. Ekoland. februari, p. 30-31. Download full text pdf, 0,85 MB; opens in new window More information |
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 Janmaat, L. 2017. Wat is beter: compost of bokashi? Ekoland. juni, p. 30-31. Download full text pdf, 0,65 MB; opens in new window More information |
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 Daniels, L. and L. Janmaat. 2017. Edith Lammerts van Bueren neemt afscheid: Van docent Biologische Teelt naar Hoogleraar Veredeling. Ekoland. november, p. 22-23. Download full text pdf, 0,67 MB; opens in new window More information |
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 Janmaat, L. 2016. Demeter Course on nutrition quality. (In Dutch.). Louis Bolk Instituut, Driebergen. 3 p. Download full text pdf, 0,9 MB; opens in new window More information |
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 Janmaat, L. 2016. Koplopers in duurzaamheid: Tuinders en winkeliers nemen elkaar de maat. Ekoland. December, p. 32-33. Download full text pdf, 0,71 MB; opens in new window More information |
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 Janmaat, L. 2016. Rapid upscaling of resistant potato varieties needed: current wet period highlights crop susceptibility to Phytophthhora. (In Dutch.). Ekoland. Juli/augustus, p. 32-33. Download full text pdf, 0,71 MB; opens in new window More information |
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 Janmaat, L. 2016. In-depth course: Converting to Demeter. (In Dutch.). Louis Bolk Instituut, Driebergen. 2 p. Download full text pdf, 0,6 MB; opens in new window More information |
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 Janmaat, L., E. Nuijten and E.T. Lammerts van Bueren. 2016. Fair seed as a basis for organic products: Eosta takes a stand and supports the breeding of open-pollinated varieties. (In Dutch.). Louis Bolk Instituut, Driebergen. 4 p. Download full text pdf, 1,8 MB; opens in new window More information |
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 Janmaat, L., E. Nuijten and E.T. Lammerts van Bueren. 2016. Fair seed as a basis for organic products: Eosta takes a stand and supports the breeding of open-pollinated varieties. Louis Bolk Instituut, Driebergen. 4 p. Download full text pdf, 1,8 MB; opens in new window More information |
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 Janmaat, L., E. Nuijten and E.T. Lammerts van Bueren. 2016. Fair seed as a basis for organic products: Eosta takes a stand and supports the breeding of open-pollinated varieties. (In German.). Louis Bolk Instituut, Driebergen. 4 p. Download full text pdf, 1,9 MB; opens in new window More information |
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 Cuijpers, W.J.M., L. Janmaat and J.G. Fuchs. 2016. Compost and soil ecosystem resilience in organic greenhouses. p. 13-27. In Van der Wurff, A., J.G. Fuchs M. Raviv and A.J. Termorsthuizen. (ed.) Handbook for Composting and Compost Use in Organic Horticulture. Download full text pdf, 0,79 MB; opens in new window More information |
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 Fuchs, J.G. and L. Janmaat. 2016. How growers can assess compost quality. p. 99-104. In Van der Wurff, A.W.G., J.G. Fuchs, M. Raviv and A.J. Termorshuizen. (ed.) Handbook for Composting and Compost Use in Organic Horticulture. Download full text pdf, 370 kB; opens in new window More information |
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 Fuchs, J.G., L. Janmaat and M. Raviv. 2016. What control measures do we need for compost production and use. p. 53-62. In Van der Wurff, A.W.G., J.G. Fuchs, M. Raviv and A.J. Termorshuizen. (ed.) Handbook for Composting and Compost Use in Organic Horticulture. Download full text pdf, 460 kB; opens in new window More information |
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 Lammerts van Bueren, E.T. and L. Janmaat. 2016. Organic 3.0. (In Dutch.). Ekoland. Januari, p. 18-19. Download full text pdf, 0,89 MB; opens in new window More information |
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 Luske, B. and L. Janmaat. 2016. More trees, more bees: Bringing back on-farm trees and shrubs. (In Dutch.). Ekoland. oktober, p. 20-21. Download full text pdf, 0,81 MB; opens in new window More information |
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 Janmaat, L. 2015. Compost power: Compost reduces dependence on livestock manure in arable farming and horticulture. (In Dutch.). Ekoland. Januari 2015, p. 16-19. Download full text pdf, 0,89 MB; opens in new window More information |
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 Janmaat, L. 2015. Digestate: Usage and regulations. (In Dutch.). Ekoland. April 2015, p. 14-15. Download full text pdf, 0,74 MB; opens in new window More information |
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 Janmaat, L. 2015. The International Year of Soils is a constant source of inspiration: Agri-businesses also committed to sustainable soil management. (In Dutch.). Ekoland. Juli/augustus 2015, p. 16-17. Download full text pdf, 0,7 MB; opens in new window More information |
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 Janmaat, L. 2015. In search of the ideal soil profile: Crumbly soil, red and grey worms, soil crawlers and the pros and cons of rotary tillage. (In Dutch.). Ekoland. Februari 2015, p. 21. Download full text pdf, 0,65 MB; opens in new window More information |
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 Janmaat, L. and B. Luske. 2015. Where would we be without bees? Bees take care of pollination and contribute to on-farm biodiversity. (In Dutch.). Ekoland. september 2015, p. 14-15. Download full text pdf, 0,71 MB; opens in new window More information |
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 Lammerts van Bueren, E.T., L. Janmaat and A. Zeelenberg. 2015. Get a taste of new talented Robust potato cultivars. Louis Bolk Instituut, Driebergen. 8 p. Download full text pdf, 3 MB; opens in new window More information |
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 Luske, B., D. Dirks, L. Janmaat, R. Boevink, M. Boogaard, J. Zevenbergen, I. Barten, D. van der Maat, A. Koelemeijer, C. van den Berg and L. Daniels. 2015. Newsletter Flourishing Farm #12. (In Dutch, with English abstract.). Louis Bolk Instituut, Driebergen. Download full text pdf, 2,2 MB; opens in new window More information |
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 Luske, B., J.W. Erisman, L. Janmaat and L. Daniels. 2015. Newsletter Flourishing Farm #11. (In Dutch, with English abstract.). Louis Bolk Instituut, Driebergen. Download full text pdf, 4,1 MB; opens in new window More information |
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 Nuijten, E., A. Zeelenberg, L. Janmaat and E.T. Lammerts van Bueren. 2015. Various ways for successful Cultivar introduction in the market. Louis Bolk Instituut, Driebergen. 6 p. Download full text pdf, 1,6 MB; opens in new window More information |
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 Steenbruggen, A., B. Luske, D. Dirks, J.W. Erisman and L. Janmaat. 2015. The harvest of the Flourishing Farm project: Flowering field margins for natural pest control. (In Dutch, with English abstract.). Louis Bolk Instituut, Driebergen. 20 p. Order Price: €3.00; Order code:2015-002 LbD; opens in new window Download full text pdf, 4,9 MB; opens in new window More information |
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 Verwer, C., H. van Kasteren, J. Gielen, J. Postma, L. Janmaat, L. Vermaas and W. Verstraete. 2015. Presentations of the meeting "Using residues in arable farming: opportunity or risk?". (In Dutch, with English abstract.). Download full text pdf, 9 MB; opens in new window More information |
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 Janmaat, L. 2014. In search of the ideal potato: Introduction of a new resistant potato varieties takes time and effort. (In Dutch.). Ekoland. December 2014, p. 30-31. Download full text pdf, 0,85 MB; opens in new window More information |
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 Janmaat, L. 2014. Growers' networks - Newsletter October 2014. (In Dutch.). Louis Bolk Instituut, Driebergen. Download full text pdf, 1,5 MB; opens in new window More information |
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 Janmaat, L., W.J.M. Cuijpers, B. Willems and M. Mulder. 2014. What is good compost? Presentation held at the closing conference of three growers' networks, 26 November 2014. (In Dutch.). Download full text pdf, 3,4 MB; opens in new window More information |
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 Bestman, M.W.P. and L. Janmaat. 2014. Agroforestry, hype or sustainable prospect? Research shows that agroforestry is useful, but is it also profitable? (In Dutch.). Ekoland. Juli/augustus, p. 22-23. Download full text pdf, 0,69 MB; opens in new window More information |
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 Lammerts van Bueren, E.T., L. Janmaat and A. Zeelenberg. 2014. Get a taste of new talented Robust potato cultivars. (In Dutch, with English abstract.). Louis Bolk Instituut, Driebergen. 8 p. Order Price: €0.00; Order code:; opens in new window Download full text pdf, 2,9 MB; opens in new window More information |
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 Luske, B., L. Janmaat, J. de Wit, M. Vlaswinkel and L. Daniels. 2014. Flourishing Farm, Newsletter #10. (In Dutch, with English abstract.). Louis Bolk Instituut, Driebergen. Download full text pdf, 1,6 MB; opens in new window More information |
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 Luske, B., L. Janmaat, M.M. Bos and L. Daniels. 2014. Integrative pest control of the Cereal Leaf Beatle. (In Dutch, with English abstract.). Louis Bolk Instituut, Driebergen. 2 p. Order Price: €2; Order code:2014-036 LbD; opens in new window Download full text pdf, 0,68 MB; opens in new window More information |
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 Bos, M.M., B. Luske and L. Janmaat. 2014. Field nature: recognize and stimulate useful nature. (In Dutch.). Louis Bolk Instituut, Driebergen. 32 p. Order Price: €5.50; Order code:2014-039 LbD; opens in new window Download full text pdf, 7,1 MB; opens in new window More information |
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 Janmaat, L. 2013. The ins and outs of modern hybridization of vegetable varieties: hybrid seeds can be developed through traditional methods or through genetic modification techniques. (In Dutch.). Ekoland. 33(9):22-23. Download full text pdf, 0,62 MB; opens in new window More information |
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 Janmaat, L. 2013. Sustainability assessment for organic entrepreneurs: an overview of sustainability assessment tools and their applications. (In Dutch.). Ekoland. 33(4):8-9. Download full text pdf, 0,66 MB; opens in new window More information |
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 Janmaat, L. 2013. The Organics Knowledge Coalition: a new collaborative partnership in agricultural education. (In Dutch, with English abstract.). Ekoland. 33(1):25-25. Download full text pdf, 470 kB; opens in new window More information |
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 Janmaat, L. 2013. Growers' networks - Newsletter December 2013. (In Dutch.). Louis Bolk Instituut, Driebergen. Download full text pdf, 1,5 MB; opens in new window More information |
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 Janmaat, L. 2013. Growers' networks - Newsletter July 2013. (In Dutch.). Louis Bolk Instituut, Driebergen. Download full text pdf, 1,3 MB; opens in new window More information |
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 Bokhorst, J.G. and L. Janmaat. 2013. Organic agriculture well equipped for phosphate cycling: good soil structure and healthy soil life are a source of phosphate. (In Dutch.). Ekoland. 33(7/8):22-23. Download full text pdf, 0,59 MB; opens in new window More information |
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 Nuijten, E., L. Janmaat and E.T. Lammerts van Bueren. 2013. New models for plant breeding: Key elements for collaboration within the food chain. Wageningen UR, Louis Bolk Instituut, Wageningen, Driebergen. 4 p. Download full text pdf, 350 kB; opens in new window More information |
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 Schlaman, G. and L. Janmaat. 2013. The pioneer spirit persists: Pumpkins are the driving factor of the Jonkmans family's farm. (In Dutch.). Ekoland. 33(7/8):18-21. Download full text pdf, 0,86 MB; opens in new window More information |
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 Bos, H., L. Mertens, M. van Diemen, L. Janmaat and W.J.M. Cuijpers. 2013. Winter Vegetables Newsletter April 2013. (In Dutch.). Louis Bolk Instituut, Driebergen. Download full text pdf, 0,85 MB; opens in new window More information |
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 Janmaat, L. 2012. Fertilize with vision and precision: Soil researchers give their views on soil analysis figures, mineral ratio and precision fertilization. (In Dutch.). Ekoland. 32(5):10-11. Download full text pdf, 0,61 MB; opens in new window More information |
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 Janmaat, L. 2012. Jan Bokhorst, pioneer of Louis Bolk Institute, retires: "Own identity of organic farming should be distinctive". (In Dutch.). Ekoland. 32(1):22-23. Download full text pdf, 370 kB; opens in new window More information |
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 Janmaat, L. 2012. From penalizing verification to stimulating certification: Biodynamic farmers inspire each other by means of peer review. (In Dutch.). Ekoland. 32(9):26-27. Download full text pdf, 370 kB; opens in new window More information |
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 Leendertse, P., W.J.M. Cuijpers, L. Janmaat, N.J.M. van Eekeren, A. Lommen, A. Guldemond, J.G. Bokhorst, H. Kloen and B. Aasman. 2012. Newsletter Soil Academy #15. (In Dutch.). Louis Bolk Instituut; CLM, Driebergen; Culemborg. More information |
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 Janmaat, L. 2011. Farm in focus - Arnica Kwekerij manages and preserves biodiversity. (In Dutch.). Ekoland. 9-2011, p. 18-21. Download full text pdf, 0,67 MB; opens in new window More information |
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 Janmaat, L. 2011. Soil-less organic horticulture? A growing discussion on the interpretation of EU rules. (In Dutch.). Ekoland. 4-2011, p. 22-23. More information |
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 Janmaat, L. 2011. Agriculture, nature and the role of farmers and government - an interview with Geert de Snoo. (In Dutch.). Ekoland. 9-2011, p. 12-13. Download full text pdf, 440 kB; opens in new window More information |
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 Wagenaar, J. and L. Janmaat. 2011. Farmers network poultry farming connects: more synchronisation between breeders, hatcheries and laying hen farmers. (In Dutch.). Ekoland. 5-2011, p. 26-27. Download full text pdf, 360 kB; opens in new window More information |
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 Janmaat, L. 2010. Wishes for organic fertilisation: principles, rules and bottlenecks. (In Dutch.). Ekoland. 10-2010, p. 36-37. Download full text pdf, 270 kB; opens in new window More information |
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 Janmaat, L. 2010. Natuurlijk middel ruimt ziekteverwekkers op. Ekoland. 3-2010, p. 18-20. Download full text pdf, 350 kB; opens in new window More information |
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 Janmaat, L. 2010. Van wieg tot wieg: Van regel tot regel. Ekoland. 2-2010, p. 25-27. Download full text pdf, 4,5 MB; opens in new window More information |
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 Janmaat, L., G.J.H.M. van der Burgt, M. Zanen, L. Vlaar and P. Leendertse. 2010. Nieuwsbrief Bodemacademie #8. Louis Bolk Instituut; CLM, Driebergen; Culemborg. Download full text pdf, 3,6 MB; opens in new window More information |
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| Janmaat, L. and H. Brinks. 2010. Biologische tafelaardappels: eet smakelijk? Deelnemers BioImpuls werken aan productieverbetering. Ekoland. 12-2010, p. 10-11. More information |
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 Janmaat, L., J.G. Bokhorst, C. Rougoor, W. Chardon, P. van Erp, A. Reijneveld, R. Postma, B.G.H. Timmermans and G.J.H.M. van der Burgt. 2010. Nieuwsbrief Bodemacademie #6: Special fosfaat. Louis Bolk Instituut; CLM, Driebergen; Culemborg. Download full text pdf, 3,1 MB; opens in new window More information |
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 Staps, J.J.M., M. Zanen, A. Visser, H. Kloen, J.G. Bokhorst, L. Janmaat and G.J.H.M. van der Burgt. 2010. Nieuwsbrief Bodemacademie #7. Louis Bolk Instituut; CLM, Driebergen; Culemborg. Download full text pdf, 2,7 MB; opens in new window More information |
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| Janmaat, L. 2009. Biokwekerij Poldervaart: Biologisch telen is een grote ontdekkingsreis. Ekoland. 2009-3, p. 20-21. More information |
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| Janmaat, L. 2009. Klimaatneutrale biokas: Verticale luchtbeweging zorgt voor doorbraak. Ekoland. 10-2009, p. 20-21. More information |
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| Janmaat, L. 2009. Verdieping door beroepsontwikkeling: Aandacht voor de persoon in het bedrijf. Ekoland. 2009-1, p. 25. More information |
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 Janmaat, L., M.M. Bos, J.G. Bokhorst, G.J.H.M. van der Burgt, A. Visser and J. Thoelen. 2009. Nieuwsbrief Bodemacademie #3. Louis Bolk Instituut; CLM, Driebergen; Culemborg. Download full text pdf, 1,6 MB; opens in new window More information |
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 Staps, J.J.M., L. Janmaat, M. Zanen and W. van Weperen. 2009. Nieuwsbrief Bodemacademie #4. Louis Bolk Instituut; CLM, Driebergen; Culemborg. Download full text pdf, 2,5 MB; opens in new window More information |
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 Vliet, J. van, J.G. Bokhorst, J.J.M. Staps, L. Janmaat and Bodemadvies DLV Plant. 2009. Nieuwsbrief Bodemacademie #5. Louis Bolk Instituut; CLM, Driebergen; Culemborg. Download full text pdf, 2,1 MB; opens in new window More information |
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| Janmaat, L. 2006. De smaak van biologische groenten. Biofood. , p. 17-19. More information |
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| Bokhorst, J.G. and L. Janmaat. 2006. Kwaliteit biologische peen loopt achteruit: Nog onvoldoende inzicht in stikstofdynamiek bodem. Ekoland. , p. 24-25. More information |
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