Schröder, J.J., Assinck, F.B.T., Uenk, D., Velthof, G.L.
A field experiment was conducted to find out whether there is any difference in risk of N leaching to groundwater when cattle slurry and/or mineral fertilizer-N was applied to cut grassland. The...
Schröder, J.J., Assinck, F.B.T., Uenk, D., Velthof, G.L.
A field experiment was conducted to find out whether there is any difference in risk of N leaching to groundwater when cattle slurry and/or mineral fertilizer-N was applied to cut grassland. The...
Effectiviteit van het "Alternatieve Spoor" in de Noordelijke Friese Wouden (2009)
Sonneveld, M.P.W., Bos, J.F.F.P., Schröder, J.J., Roelsma, J., Brus, D.J., Bloem, J., ...
Schröder, J.J., Aarts, H.F.M., Middelkoop, J.C., Van, Velthof, G.L., Reijs, J.W., Fraters, B.
Oenema, O., Schoumans, O.F., Krimpen, M.M., Van, Peet, G.F.V., Van Der, Timmerman, M., Sanders, J., ...
Kunstmestvervangers onderzocht (2009)
Hoeksma, P., Hoop, J., De, Vries, J.W., De, Velthof, G.L., Ehlert, P.A.I., Dijk, W., Van, ...
Verloop, J., Hilhorst, G.J., Meerkerk, B., Buisonjé, F.E., De, Schröder, J.J., Haan, M.
Smit, A.L., Bindraban, P.S., Schröder, J.J., Conijn, J.G., Meer, H.G., Van Der
Mestscheiding: relaties tussen techniek, kosten, milieu en landbouwkundige waarde (2009)
Schröder, J.J., Buisonjé, F.E., De, Kasper, G.J., Verdoes, N., Verloop, K.
Akkervogels alleen te redden met een koerswijziging van het gemeenschappelijk landbouwbeleid (2009)
Bos, J.F.F.P., Kragten, S., Schröder, J.J.
Door hun verbondenheid met landbouw is het lot van boerenlandvogels nauw gerelateerd aan de effecten van het in Europa gevoerde Gemeenschappelijke Landbouwbeleid (GLB). Het GLB is tot 2013 goeddeels...
A whole-farm strategy to reduce environmental impacts of Nitrogen (2008)
Sonneveld, M.P.W., Schröder, J.J., Vos, J.A., De, Monteny, G.J., Mosquera, J., Hol, J.M.G., ...
N-werking van de dunne fractie van gescheiden drijfmest : resultaten proefveld Wintelre 2007 (2008)
Schröder, J.J., Uenk, D., Middelkoop, J.C., Van
Nutrient management regulations in The Netherlands (2008)
Schröder, J.J., Neeteson, J.J.
The application of nutrients affect the quality of the environment which justifies the consideration of regulations regarding their use in agriculture. In the early 1990s The Netherlands decided to...
Emissiearme mesttoediening en nevenaspecten (2008)
Huijsmans, J.F.M., Schröder, J.J., Vermeulen, G.D., Goede, R.G.M., De, Teunissen, W.A., Kleijn, D.
Relationships between nutrient recycling, environmental impacts and agricultural production (2008)
Schröder, J.J., Bos, J.F.F.P.
A Whole-Farm Strategy to Reduce Environmental Impacts of Nitrogen (2008)
Sonneveld, M.P.W., Schröder, J.J., Vos, J.A., De, Monteny, G.J., Mosquera, J., Hol, J.M.G., ...
Dutch regulations for ammonia emission require farmers to inject slurry into the soil (shallow) or to apply it in narrow bands at the surface. For one commercial dairy farm in the Netherlands it was...
Emissiearme mesttoediening : ammoniakemissie, mestbenutting en nevenaspecten (2008)
Huijsmans, J.F.M., Schröder, J.J., Vermeulen, G.D., Goede, R.G.M., De, Kleijn, D., Teunissen, W.A.
Schröder, J.J., Middelkoop, J.C., Van, Dijk, W., Van, Velthof, G.L.
Schröder, J.J., Middelkoop, J.C., Van, Dijk, W., Van, Velthof, G.L.
Residual inorganic soil nitrogen in grass and maize on sandy soil (2007)
Berge, H.F.M., Ten, Burgers, S.L.G.E., Meer, H.G., Van Der, Schröder, J.J., Schoot, J.R., Van Der, Dijk, W., Van
Bemestingswaarde van mestscheidingsproducten : theorie en praktijk (2007)
Schröder, J.J., Uenk, D., Middelkoop, J.C., Van
Schröder, J.J., Aarts, H.F.M., Middelkoop, J.C., Van, Haan, M.H.A., De, Schils, R.L.M., Velthof, G.L., ...
Properly managed manures have a high fertilizer equivalency and are thus a valuable source of nutrients in forage production systems. An efficient utilization of these nutrients, however, is limited...
Whitmore, A.P., Schröder, J.J.
A model of soil nitrogen dynamics under competing intercrops is described and used to interpret two sets of experimental field data from the literature. In one series of experiments, maize received...
A whole-farm strategy to reduce ammonia losses following slurry application (2007)
Sonneveld, M.P.W., Schröder, J.J., Vos, J.A., De, Monteny, G.J., Mosquera, J., Hol, J.M.G., ...
Vries, W., De, Kros, J., Velthof, G.L., Gies, E., Voogd, J.C.H., Bleeker, A., ...
Long-term nitrogen fertilizer replacement value of cattle manures applied to cut grassland (2007)
Schröder, J.J., Uenk, D., Hilhorst, G.J.
Manures supply nitrogen (N) to crops beyond the year of application. This N must be taken into account for agronomic and environmental reasons. From 2002 to 2006 we conducted a field experiment on a...
Schröder, J.J., Velthof, G.L., Schoot, J.R., Van Der, Dijk, W., Van
Dijk, W., Van, Schröder, J.J.
Stikstofwerking van gewasrestencomposten in suikerbieten (2007)
Geel, W.C.A., Van, Schröder, J.J.
Vries, W., De, Kros, J., Velthof, G.L., Gies, T.J.A., Voogd, J.C.H., Bleeker, A., ...
Landbouwpraktijk en waterkwaliteit op landbouwbedrijven aangemeld voor derogatie (2007)
Fraters, B., Leeuwen, T.C., Van, Reijs, J.W., Boumans, L.J.M., Aarts, H.F.M., Daatselaar, C.H.G., ...
Kunnen stikstofbemestingsadviezen verder verfijnd worden op basis van bodemeigenschappen? (2006)
In deze studie is enerzijds gekeken of de indicatoren organische stof en N-totaal een voorspellend karakter hebben voor de bodemmineralisatie, de N-benutting of de maximale biomassaproductie....
De houding van Wageningse voor- en tegenstanders van biologische landbouw
De stikstofstromen bij Oosterhof nader bekeken (2006)
Schröder, J.J., Eekeren, N., Van, Oosterhof, D.
Biologische melkveehouders zijn geïnteresseerd in de vraag of en tegen welke prijs zij mest zouden kunnen verkopen aan collega-akkerbouwers, zonder daarbij een wissel te trekken op de duurzaamheid...
Long term N fertilizer value of cattle slurry applied to maize (2006)
Schröder, J.J., Dijk, W., Van, Hilhorst, G.J., Schooten, H.A., Van, Bruinenberg, M.H.
Neeteson, J.J., Schröder, J.J., Smit, A.L., Bos, J.F.F.P., Verloop, J.
The global flow of phosphorus is essentially linear and irreversible. After being mined, phosphorus is applied to agricultural soils where it is taken up by crops or where it accumulates in the soil....
Actualisatie Onderbouwing Derogatie 2009 (2006)
Schröder, J.J., Velthof, G.L., Aarts, H.F.M., Middelkoop, J.C., Van, Willems, W.J.
The ongoing disintegration of agriculture into specialized farms, specialized regions and even specialized countries, has disrupted local nutrient cycles. This process is promoted and sustained by...
Accumulation of mineral nitrogen in soils under grass and maize (2005)
Berge, H.F.M., Ten, Burgers, S.L.G.E., Schröder, J.J., Hofstad, E.
Komen andere gewassen dan gras in aanmerking voor derogatie? (2005)
Schröder, J.J., Dijk, W., Van, Aarts, H.F.M., Middelkoop, J.C., Van, Velthof, G.L., Willems, W.J.
Schröder, J.J., Aarts, H.F.M., Middelkoop, J.C., Van, Haan, M.H.A., De, Schils, R.L.M., Velthof, G.L., ...
Schröder, J.J., Schooten, H.A., Van, Bruinenberg, M.H., Dijk, W., Van
N synthese in bedrijfsverband (2005)
Schröder, J.J., Lantinga, E.A., Verhoeven, F., Sonneveld, M.P.W.
Innovative N-management at the Spruit Farm (2005)
Bouma, J., Sonneveld, M.P.W., Vos, J.A., De, Lantinga, E.A., Monteny, G.J., Schröder, J.J., ...
Long term nitrogen fertilizer value of cattle slurry (2005)
Schröder, J.J., Jansen, A.G., Hilhorst, G.J.
Manures can supply nitrogen (N) beyond the year of application, producing residual effects that are are not fully expressed in short-term experiments. From 1997 to 2003 we conducted a field...
Bos, J.F.F.P., Aarts, H.F.M., Schröder, J.J., Biewinga, E.E., Schils, R.L.M., Velthof, G.L., ...
Manure as a suitable component of precise nitrogen nutrition (2005)
Manures are an inevitable consequence of livestock in agriculture. They represent a valuable source of nutrients, including nitrogen (N), phosphorus and potassium. The industrial production of...
Innovative N-management at the Spruit-farm (2005)
Bouma, J., Sonneveld, M.P.W., Vos, J.A., De, Lantinga, E.A., Monteny, G.J., Schröder, J.J., ...
Schröder, J.J., Scholefield, D., Cabral, F., Hofmans, G.
The magnitude of current nutrient losses from agriculture to ground and surface water calls for effective environmental policy, including the use of regulation. Nutrient loss is experienced in many...
Gebruiksnormen bij verschillende landbouwkundige en milieukundige uitgangspunten (2004)
Schröder, J.J., Aarts, H.F.M., Bode, M.J.C., De, Dijk, W., Van, Middelkoop, J.C., Van, Haan, M.H.A., De, ...
Nitrogen rate, surplus or residue? Performance of selected indicators for nitrate leaching (2004)
Berge, H.F.M., Ten, Burgers, S.L.G.E., Hack-ten Broeke, M.J.D., Smit, A., Gruijter, J.J., De, Velthof, G.L., ...
Ammonium-N aandeel in mest als functie van het ruweitwitgehalte in voer (2004)
Schröder, J.J., Oenema, J., Verhoeven, F., Eekeren, N., Van, Visser, M., De, Lantinga, E.A., ...
A multi-scale system approach to nutrient management research in the Netherlands (2003)
J.J. Neeteson, J.J. Schröder, H.F.M. Ten Berge
Delden, A., Van, Schröder, J.J., Kropff, M.J., Grashoff, C., Booij, R.
In order to improve crop yields but limit phosphorus (P) accumulation in organic farming systems, insight into the effects of organic nitrogen (N) management on crop yield is required. After...
An evaluation of whole farm nitrogen balances and related indices for efficient nitrogen use (2003)
Schröder, J.J., Aarts, H.F.M., Berge, H.F.M., Ten, Keulen, H., Van, Neeteson, J.J.
Quantification of nitrogen (N) flows creates awareness among farmers, can help them to re-evaluate N management and may reduce nitrate loss to groundwater. Hence, whole-farm balances play a crucial...
Mineralenstromen binnen en tussen biologische bedrijven (2002)
Schröder, J.J., Leeuwen-Haagsma, W., Van
Groenbemesters en rustgewassen : noodzakelijke bouwstenen voor een optimale vruchtwisseling (2002)
Leeuwen-Haagsma, W., Van, Schröder, J.J.
Restoring farmers' confidence in manure benefits the environment. (2002)
The ongoing disintegration of agriculture into specialized farms, specialized regions and even specialized countries, has disrupted local nutrient cycles. This process is promoted and sustained by...
A multi-scale system approach to nutrient management research in the Netherlands (2002)
Neeteson, J.J., Schröder, J.J., Berge, H.F.M., Ten
Partial balance regression models for Nmin (2002)
Berge, H.F.M., Ten, Burgers, S.L.G.E., Schröder, J.J., Hofstad, E.J.
Watson, C.A., Bengtsson, H., Ebbesvik, M., Loes, A.K., Myrbeck, A., Salomon, E., ...
On organic farms, where the importation of materials to build/maintain soil fertility is restricted, it is important that a balance between inputs and outputs of nutrients is achieved to ensure both...
Opschaling van stikstofverliezen in de akkerbouw van perceels- naar bedrijfsniveau (2001)
Willigen, P., De, Schröder, J.J., Rappoldt, C.A.
Met behulp van modelberekeningen is onderzocht in hoeverre nutriënten die achterblijven in gewasresten of bodem, hergebruikt kunnen worden door een volgend gewas dan wel een uitgesteld verlies naar...
Postma, J., Schröder, J.J., Zwart, K.B., Vos, J.A., De
Detaillering projectplan 'Telen met toekomst' (2001)
Booij, R., Dijk, W., Van, Smit, A.L., Wijnands, F.G., Langeveld, J.W.A., Haan, J.J., De, ...
Does the crop or the soil indicate how to save nitrogen in maize production? (2000)
Schröder, J.J., Neeteson, J.J., Oenema, O., Struik, P.C.
High nitrogen (N) application rates are used by maize growers as an ‘insurance’, but may have an adverse effect on the environment. In this paper, the potential for nitrogen savings by the use of...
Effecten van bedrijfsinrichting en management op perceels- en bedrijfsoverschot (2000)
Schröder, J.J., Corré, W.J., Smits, M.C.J., Verstraten, F., Schils, R., Dekker, P.H.M.
Willems, W.J., Vellinga, T.V., Oenema, O., Schröder, J.J., Meer, H.G., Van Der, Fraters, B., ...
Schröder, J.J., Bleumer, E., Philipsen, A.P., Dijk, W., Van, Antonissen, H.
Habekotté, B., Aarts, H.F.M., Corré, W.J., Hilhorst, G.J., Keulen, H., Van, Schröder, J.J., ...
Samenvatting discussie Themamiddag Fosfaat (1998)
Keulen, H., Van, Aarts, H.F.M., Habekotté, B., Corré, W.J., Hilhorst, G.J., Schröder, J.J., ...
Schröder, J.J., Neeteson, J.J., Withagen, J.C.M., Noy, I.G.A.M.
The current nitrogen (N) use in silage maize production can lead to considerable N losses to the environment. Maize growers fear that a reduction of N inputs needed to minimize N losses might depress...
Restrictions on nitrogen use in The Netherlands with special reference to maize (1998)
Schröder, J.J., Dijk, W., Van
Oenema, O., Schröder, J.J., Meer, H.G., Van Der, Boers, P.C.M., Eerdt, M.M., Van, Fraters, B., ...
Oenema, O., Boers, P.C.M., Eerdt, M.M., Van, Fraters, B., Meer, H.G., Van Der, Roest, C.W.J., ...
Nitrate concentrations in groundwater are correlated with the nitrogen surpluses at the soil surface. In the Netherlands, both nitrogen surpluses of agricultural land and nitrate concentrations in...
Non-overwintering cover crops: significant source of N. (1997)
Schröder, J.J., Ten Holte, L., Janssen, B.H.
In field experiments in 1982-89 at 2 sites in the Netherlands, potatoes cv. Bintje and sugarbeet cv. Monohil or Ovatio in a wheat/potatoes/wheat/sugarbeet rotation were preceded during winter by...
Stikstofuitspoeling en vanggewassen (1997)
Vos, J.A., De, Schröder, J.J., Whitmore, A.P.
Schröder, J.J., Keulen, H., Van
The decomposition rate of soil organic N was estimated from data of a long-term field experiment and used in a simulation model. Subsequently, the model was used to estimate the effects of Dutch...
Response of silage maize to placement of cattle slurry (1997)
Schröder, J.J., Ten Holte, L., Brouwer, G.
In field trials in 1993-94 on sandy soils at 2 sites in the Netherlands, cattle slurry was applied by injection into slots 25 cm apart (standard injection) or 75 cm apart (banded injection)....
The nitrate problem and nitrate policy in the Netherlands (1997)
Oenema, O., Boers, P.C.M., Eerdt, M.M., Van, Fraters, B., Meer, H.G., Van Der, Roest, C.W.J., ...
Schröder, J.J., Groenwold, J., Zaharieva, T.
Minirhizotron observations from 4 experiments in 1992 and 1993 with maize on a sandy soil in the Wageningen Rhizolab, Netherlands, showed strong vertical and lateral root density gradients during the...
Nutrient surpluses on integrated arable farms (1996)
Schröder, J.J., Asperen, P., Van, Dongen, G.J.M., Van, Wijnands, F.G.
Effects of cover crops on the nitrogen fluxes in a silage maize production system (1996)
Schröder, J.J., Dijk, W., Van, Groot, W.J.M., De
Rye and grass cover crops can potentially intercept residual soil mineral nitrogen (SMN), reduce overwinter leaching, transfer SMN to next growing seasons and reduce the fertilizer need of subsequent...
Asperen, P., Van, Schröder, J.J., Wijnands, F.G.
FARM-A 1.0: een analysesysteem voor de bedrijfsvoering. Appendices bij rapport 47, 48 en 49 (1995)
Asperen, P., Van, Schröder, J.J., Wijnands, F.G.
Dijk, W., Van, Schröder, J.J., Ten Holte, L., Groot, W.J.M., De
Tussen 1988 en 1994 is onderzoek verricht naar de effecten van wintergewassen (winterrogge en onderzaai van gras) op de verliezen en benutting van stikstof bij continuteelt van snijmaos op zandgrond....