Author Results for "Janssen, B."

Janssen, B.H.
Oenema, O.
Giller, K.E.
Ahiabor, B.D.K.
Akinnifesi, F.K.
see all »
Ezui, K.S.
Franke, A.C.
Guiking, F.C.T.
Janssen, B.
Makumba, W.

Showing 1 - 20 results of 40 for search '"Janssen, B."', query time: 0.14s Refine Results
  1. 1
    Een orienterend onderzoek naar de geschiktheid van mais voor de bepaling van het sufficiency quotient (SQ)
    External research report biblioteca
    WUR NL


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  2. 2
    A double pot technique for rapid soil testing
    External research report biblioteca
    WUR NL


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  3. 3
    Onderzoek naar de vruchtbaarheid van enkele terrasgronden langs de Surinamerivier
    External research report biblioteca
    WUR NL


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  4. 4
    The significance of the fallow year in the dry-farming system of the Great Konya Basin, Turkey.
    Article/Letter to editor biblioteca
    WUR NL


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  5. 5
    Methodologies for design, analysis and interpretation of fertilizer tests performed in the CATALIST program
    External research report biblioteca
    WUR NL


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  6. 6
    Do long-term experiments provide the key to sustainable soil productivity?
    Article in monograph or in proceedings biblioteca
    WUR NL


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  7. 7
    Simple models and concepts as tools for the study of sustained soil productivity in long-term experiments. II. Crop nutrient equivalents, balanced supplies of available nutrients, and NPK triangles
    Article/Letter to editor biblioteca
    WUR NL


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  8. 8
    Simple models and concepts as tools for the study of sustained soil productivity in long-term experiments. I. New soil organic matter and residual effect of P from fertilizers and farmyard manure in Kabete, Kenya
    Article/Letter to editor biblioteca
    WUR NL


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  9. 9
    Soil fertility in the Great Konya Basin, Turkey
    Doctoral thesis biblioteca
    WUR NL


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  10. 10
    Global Economics of Nutrient Cycling
    Article in monograph or in proceedings biblioteca
    WUR NL


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  11. 11
    Global Economics of Nutrient Cycling
    Article/Letter to editor biblioteca
    WUR NL


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  12. 12
    Modelling the response of crops to fertilizers.
    Part of book or chapter of book biblioteca
    WUR NL


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  13. 13
    Cowdung Slurry as Organic Manure for Fodder Crops in Kilifi, coast Province Kenya
    External research report biblioteca
    WUR NL


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  14. 14
    The influence of soil P, pH and texture on the uptake of P from soil and fertilizer by upland rice in the shifting cultivation of S.W. Côte d'Ivoire.
    Article/Letter to editor biblioteca
    WUR NL


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  15. 15
    Optimum NPK management over extended cropping periods in the shifting cultivation system of south-west Cóte d'Ivoire.
    Article/Letter to editor biblioteca
    WUR NL


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  16. 16
    Mechanized annual cropping on low fertility acid soils in the humid tropics. A case study of the Zanderij soils in Suriname.
    Book editorial biblioteca
    WUR NL


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  17. 17
    Laboratory and greenhouse assessment of plant availability of organic N in animal manure
    Article/Letter to editor biblioteca
    WUR NL


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  18. 18
    Spatial rooting patterns of gliricidia, pigeon pea and maize intercrops and effect on profile soil N and P distribution in southern Malawi
    Article/Letter to editor biblioteca
    WUR NL


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  19. 19
    Soil use and management strategy for raising food and cash output in Rwanda
    Article/Letter to editor biblioteca
    WUR NL


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  20. 20
    Non-overwintering cover crops: a significant source of nitrogen
    Article/Letter to editor biblioteca
    WUR NL


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