Search Results - "Machet, J.M"

Nitrate leaching in intensive agriculture in Northern France: Effect of farming practices, soils and crop rotations by Beaudoin, N., Saad, J.K., Van Laethem, C., Machet, J.M., Maucorps, J., Mary, B.

“…The efficacy of ‘Good Agricultural Practices’ (GAP) for reducing nitrate pollution is tested on the scale of a small catchment area (187 ha) which is almost…”
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Dynamics and recovery of fertilizer 15N in soil and winter wheat crop under minimum versus conventional tillage by Giacomini, S.J., Machet, J.M., Boizard, H., Recous, S.

“…The development of reduced tillage in cropping systems raises the question of adaptation of N fertilization of crops in response to changes in the chemical,…”
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Short-term immobilisation and crop uptake of fertiliser nitrogen applied to winter wheat: effect of date of application in spring by Recous, S. (Unite d'Agronomie INRA, Laon (France).), Machet, J.M

“…Previous studies on the fate of fertiliser nitrogen applied to winter wheat in temperate climates have shown that nitrogen (N) applied early, at tillering for…”
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The partitioning of fertilizer-N between soil and crop: comparison of ammonium and nitrate applications by Recous, S. (Station d'Agronomie INRA, Laon (France)), Machet, J.M, Mary, B

“…Field experiments were carried out in 1987 on winter wheat crops grown on three types of soil. ¹⁵N-labelled urea, ¹⁵NH₄NO₃ or ¹⁵NH₄NO₃ (80 kg N ha⁻¹) was…”
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Long term response of water and nitrogen fluxes to Good Agricultural Practices at field and catchment scales by Beaudoin, N., Venet, E., Maucorps, J., Vandenberghe, C., Pugeaux, N., Viennot, P., Gourcy, L., Brayer, C., Machet, J.M., Couturier, A., Billy, C., Vigour, N., Hulin, G., Dorel, G., Mary, B.

“…Facing the nitrate pollution problem, the European Union has encouraged a code of “Good Agricultural Practices” (GAP) in order to recover a good chemical and…”
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Relationship between the amount of reduced nitrogen accumulated in winter wheat shoots and the activity of nitrate reductase measured in situ by Vouillot, M.O., Machet, J.M., Meynard, J.M.

“…Nitrate reductase activity measured in shoots of winter wheat ( Triticum aestivum cv. Apollo and Soissons) was assessed as an indicator of the nitrate…”
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A review of tillage effects on crop residue management, seedbed conditions and seedling establishment by Guérif, J, Richard, G, Dürr, C, Machet, J.M, Recous, S, Roger-Estrade, J

“…There is considerable discussion about the influence of soil management techniques on soil erosion, water use and conservation, and more recently carbon…”
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Determination of a Critical Nitrogen Dilution Curve for Winter Wheat Crops by Justes, E., Mary, B., Meynard, J.-M., Machet, J.-M., Thelier-Huche, L.

“…A set of N-fertilization field experiments was used to determine the 'critical nitrogen concentration', i.e, the minimal concentration of total N in shoots…”
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Integrated Control of Nitrate Uptake by Crop Growth Rate and Soil Nitrate Availability under Field Conditions by Devienne-Barret, F., Justes, E., Machet, J.M., Mary, B.

“…There is still disagreement about whether crop growth rate or soil nitrate concentration control nitrogen absorption by crops under field conditions. The…”
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Calculation of nitrogen mineralization and leaching in fallow soil using a simple dynamic model by Mary, B., Beaudoin, N., Justes, E., Machet, J. M.

“…Summary Simple models describing nitrogen processes are required both to estimate nitrogen mineralization in field conditions and to predict nitrate leaching…”
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Short-term immobilisation and crop uptake of fertiliser nitrogen applied to winter wheat : effect of date of application in spring by Recous, Sylvie, Machet, J.M.

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A review of tillage effects on crop residue management, seebed conditions and seedling establishment by Guerif, Jérôme, Richard, Guy, Dürr, Carolyne, Machet, J.M., Recous, Sylvie, Roger-Estrade, J.

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The fate of labelled 15 N urea and ammonium nitrate applied to a winter wheat crop by Recous, Sylvie, Machet, J.M., Mary, Bruno

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The fate of labelled 15N urea and ammonium nitrate applied to a winter wheat crop. 2. Plant uptake and N efficiency by Recous, S. (Station d'Agronomie INRA, Laon (France)), Machet, J.M, Mary, B

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