Research output per year
Research output per year
Fingerprint
Dive into the research topics where Johan Specken is active. These topic labels come from the works of this person. Together they form a unique fingerprint. If staff member(s) published prior to his/her WUR affiliation, it is possible that the publication overview, Fingerprint and network diagram are incomplete.
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Network
Recent external collaboration on country level. Dive into details by clicking on the dots or
Research output
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Critical nutrient concentrations of arable crops
Riechelman, W. H., Postma, R., Specken, J. W. & de Haan, J. J., 26 Mar 2021, Nutriënten Management Instituut NMI. 52 p.Research output: Book/Report › Report › Professional
Open Access -
Bodem & Klimaat Netwerk – Akkerbouw: voortgangsrapportage april 2020
Heesmans, H., Specken, J., Verstand, D., van Opheusden, M., Timmermans, B., Slier, T., Heupink, D., Westerhof, H., Colombijn-van der Wende, K., Janmaat, L. (ed.) & Koopmans, C. (ed.), 2020, Bunnik: Louis Bolk Instituut. 50 p.Research output: Book/Report › Report › Professional
Open Access -
Effecten bemesting K, Mg, Ca, N, Cl en hun interacties op de gewasopbrengst en -kwaliteit
Bussink, W., Specken, J. & de Haan, J., 2020, Wageningen: Nutriënten Management Instituut NMI. 44 p. (Rapport / Nutriënten Management Instituut; no. 1763.N.19)Research output: Book/Report › Report › Professional
Open Access -
Rapportage Grondig Boeren met Mais Drenthe: 2012-2019
Wesselink, M., Specken, J., Schooten, H. A., Groten, J., Verhoeven, J. T. W. & Visscher, I., 2020, Wageningen: Stichting Wageningen Research, Wageningen Plant Research, Business unit Open Teelten. 66 p. (Rapport / Stichting Wageningen Research, Wageningen Plant Research (WPR), Business unit Open Teelten; no. WPR-834)Research output: Book/Report › Report › Professional
Open Access -
Eindrapportage Grondig Boeren met Mais Drenthe: 2012-2018
Wesselink, M., Specken, J., van Schooten, H. A., Groten, J. & Verhoeven, J. T. W., 2019, Wageningen: Wageningen Plant Research,Business unit Open Teelten. 85 p. (Stichting Wageningen Research, Wageningen Plant Research, Business unit Open Teelten rapport; no. WPR-809)Research output: Book/Report › Report › Professional
Open Access
Activities
- 1 Oral presentation
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Slim Landgebruik. Hoe realiseren we 0,5 Mton koolstofvastlegging in minerale landbouwbodems?
Janjo de Haan (Speaker), Daan Verstand (Speaker) & Johan Specken (Speaker)
5 Nov 2020Activity: Talk or presentation › Oral presentation › Professional
Press / Media
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Mechanisch vraagt timing, tijd en geld
13/03/21
1 item of Media coverage
Press/Media: Expert Comment › Professional
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Tagetes geeft meerjarig positief opbrengsteffect
Johnny Visser, Johan Specken & Gerard Hoekzema
29/04/20
1 item of Media coverage
Press/Media: Expert Comment › Other
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Tagetes heeft goede duurwerking op aaltjes
14/12/19
1 item of Media coverage
Press/Media: Expert Comment › Other
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Afrikaantjes geven extra opbrengst
7/12/19
1 item of Media coverage
Press/Media: Expert Comment › Other