Showing 1 - 20 results of 34 for search 'Friesen, Dennis K.', query time: 0.07s Refine Results
  1. 1
    Nutrient cycling
    by Friesen, Dennis K.
    Published 1994
    Book Chapter biblioteca
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  2. 2
    Improving the value of maize as livestock feed to enhance the livelihoods of maize-livestock farmers in East Africa
    by Friesen, Dennis K.
    Published 2009-12-01
    Presentation biblioteca
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  3. 3
    Development and diffusion of integrated Striga control practices for small-scale farmers in western Kenya
    by Friesen, Dennis K.
    Published 2001
    Report biblioteca
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  4. 4
    Culticore : sustainable crop rotation and ley farming systems for the acid-soil savannas
    by Friesen, Dennis K.
    Published 2016-02-29T17:11:37Z
    biblioteca
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  5. 5
    Soil fertility dynamics in crop rotation/agropastoral systems ("culti-core" and satellite experiments at Carimagua and Matazul)
    by Friesen, Dennis K.
    Published 2016-02-29T17:11:34Z
    biblioteca
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  6. 6
    Plant adaptation to phosphorus: Limited tropical soils
    Book Chapter biblioteca
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  7. 7
    Liming and lime-phosphorus-zinc interactions in two Nigerian Ultisols: I. Interactions in the soil
    Journal Article biblioteca
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  8. 8
    Opportunities for germplasm selection to influence phosphorus acquisition from low-phosphorus soils
    Journal Article biblioteca
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  9. 9
    Indicadores de sostenibilidad : parámetros edafoclimáticos y diagnóstico del perfil cultural
    by Amézquita Collazos, Edgar, Friesen, Dennis K., Scovino Sanz, JI
    Published 2016-02-29T17:11:34Z
    biblioteca
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  10. 10
    Effects of improved pastures and phosphorus inputs on phosphorus transformations in a Colombian oxisol
    by Oberson, Astrid, Friesen, Dennis K., Tiessen, H., Moir, JO
    Published 2016-02-29T17:11:49Z
    biblioteca
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  11. 11
    Sustainability indicators: edaphoclimatic parameters and diagnosis of the cultural profile
    biblioteca
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  12. 12
    Indicadores de sostenibilidad: parámetros edafoclimáticos y diagnóstico del perfil cultural
    biblioteca
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  13. 13
    A cautionary note about the use of the CENTURY soil-organic-matter model for ecosystems on highly-weathered tropical low-P soils
    by Gijsman, A.J., Oberson, Astrid, Tiessen, H., Friesen, Dennis K.
    Published 2016-02-29T17:11:27Z
    biblioteca
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  14. 14
    Sequential phosphorus extraction of a 33P-labeled oxisol under contrasting agricultural systems
    Journal Article biblioteca
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  15. 15
    Phosphorus transformations in an oxisol under contrasting agricultural systems: the role of the microbial biomass
    Conference Paper biblioteca
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  16. 16
    Relationship between the performance of parental inbred lines and hybrids for food-feed traits in maize (Zea mays L.) in Ethiopia
    biblioteca
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  17. 17
    Phosphorus transformations in an oxisol under contrasting land-use systems: The role of the soil microbial biomass
    biblioteca
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  18. 18
    Dinámicas de nitrógeno en monocultivos y cultivos en rotación en oxisoles de los Llanos Orientales de Colombia
    by Friesen, Dennis K., Thomas, Richard J., Rivera, M., Asakawa, N., Bowen, W.
    Published 2015-01-28T14:18:07Z
    biblioteca
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  19. 19
    Destinos de fósforo aplicado como fertilizante en oxisoles de los Llanos Orientales de Colombia: fraccionamiento secuencial
    biblioteca
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  20. 20
    Opportunities for increasing the efficiency of phosphorus use in tropical agroecosystems
    Brief biblioteca
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