Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Nico de Ridder"'
Publikováno v:
Frontiers in Sustainable Food Systems, Vol 5 (2021)
Poor soil fertility is a major problem constraining crop productivity in smallholder farms of sub-Saharan Africa due to inadequate nutrient replenishment. Differential management of nutrients creates areas of accumulation and depletion of nutrients w
Externí odkaz:
https://doaj.org/article/c7b9f8e50594435bbf01c4c0276e0b33
Autor:
Peter Ebanyat, Nico de Ridder, Robert J. Delve, Mateete A. Bekunda, Ken E. Giller, Andre de Jager
Publikováno v:
Population and Environment, 31(6), 474-506
Population and Environment
Population and Environment 31 (2010) 6
Population and Environment
Population and Environment 31 (2010) 6
Smallholder farming systems in sub-Saharan Africa have undergone changes in land use, productivity and sustainability. Understanding of the drivers that have led to changes in land use in these systems and factors that influence the systems’ sustai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3546a057d8c38b95d63e4932e3bad0ee
https://doi.org/10.1007/s11111-010-0104-2
https://doi.org/10.1007/s11111-010-0104-2
Autor:
Ken E. Giller, Mark T. van Wijk, Nico de Ridder, Cesare Pacini, Mario Herrero, Pablo Tittonell, Mariana C. Rufino
Publikováno v:
Agricultural Systems 102 (2009) 1-3
Agricultural Systems, 102(1-3), 89-101
Agricultural Systems
Agricultural Systems, 102(1-3), 89-101
Agricultural Systems
African smallholder farming systems are complex, dynamic systems with many interacting biophysical subcomponents. In these systems the major inputs and outputs are managed by human agency - the farmers. To analyse potential developmental pathways of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4325ee8d5f25c4815a5855c51f20473
https://doi.org/10.1016/j.agsy.2009.07.004
https://doi.org/10.1016/j.agsy.2009.07.004
Publikováno v:
Plant and Soil, 292(1-2), 119-135
Plant and Soil 292 (2007) 1-2
Plant and Soil 292 (2007) 1-2
Nitrogen (N) deficiency is a major constraint to the productivity of the African smallholder farming systems. Grain, green manure and forage legumes have the potential to improve the soil N fertility of smallholder farming systems through biological
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5389265da14df17625559c5b55bbcc8
https://doi.org/10.1007/s11104-007-9207-7
https://doi.org/10.1007/s11104-007-9207-7
Publikováno v:
Agricultural and Forest Meteorology 141 (2006)
Agricultural and Forest Meteorology, 141, 235-243
Agricultural and Forest Meteorology, 141, 235-243
Quantification of frost damage risk is important in planning the development of new orchard areas and for decision-making on design and installation of frost control systems. The objective of this study was to develop a comprehensive method to quanti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2e072dd87cfda580d5562dde799eae7
https://doi.org/10.1016/j.agrformet.2006.10.011
https://doi.org/10.1016/j.agrformet.2006.10.011
Autor:
Nico de Ridder, Lars Hein
Publikováno v:
Global Change Biology. 12:751-758
The impact of human management, in particular livestock grazing, on the vegetation cover of the Sahel is still debated. In a range of studies, satellite images have been used to analyze the development of the Sahelian vegetation cover over time. Thes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c9f6686bb8f218dada6d5df04df119d
https://doi.org/10.1111/j.1365-2486.2006.01135.x
https://doi.org/10.1111/j.1365-2486.2006.01135.x
Publikováno v:
Agricultural Systems, 88(1), 8-27
Agricultural Systems 88 (2006) 1
Agricultural Systems 88 (2006) 1
We discuss the temporal and spatial dynamics of nutrient resources and water within cropping and livestock systems, their interactions and those with other resources such as labour. Short-term dynamics (within season) revolve around nutrient availabi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec091f59b99d623b4fe275f6780f445b
https://doi.org/10.1016/j.agsy.2005.06.016
https://doi.org/10.1016/j.agsy.2005.06.016
Publikováno v:
Agricultural Water Management, 72(2), 109-130
Agricultural Water Management 72 (2005) 2
Agricultural Water Management 72 (2005) 2
Measurements of surface runoff from uniform slopes of different lengths in West Africa have shown that longer slopes tend to have less runoff per unit of length than short slopes. The main reason for this scale effect is that once the rain stops, wat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8acfd6c3ddf372e33a26f31ded5b63ad
https://doi.org/10.1016/j.agwat.2004.09.007
https://doi.org/10.1016/j.agwat.2004.09.007
Publikováno v:
Agricultural Systems, 80(2), 109-131
Agricultural Systems 80 (2004) 2
Agricultural Systems 80 (2004) 2
Als prinzip des Ackerbaues muss angesehen werden, dass der Boden in vollem Massen wieder erhalten muss was ihm genommen wird. It should be borne in mind that as a principle of arable farming, what is taken from the soil should be returned to it in fu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74abb5e32759efc0758d4c1489e55fbb
https://doi.org/10.1016/j.agsy.2003.06.004
https://doi.org/10.1016/j.agsy.2003.06.004
Autor:
Jelte van Andel, Leo Stroosnijder, Lalit Kumar, Max Rietkerk, Andrew K. Skidmore, Herbert H. T. Prins, Johan van de Koppel, Nico de Ridder, John W. Hearne, Frank van Langevelde
Publikováno v:
Ecological Modelling 149 (2002)
Ecological modelling, 149(1), 143-152. Elsevier
Ecological Modelling, 149(1-2):PII S0304-3800(01)00520-8, 143-152. Elsevier
Ecological Modelling, 149, 143-152
Ecological Modelling, 149, 143. Elsevier
Ecological modelling, 149(1), 143-152. Elsevier
Ecological Modelling, 149(1-2):PII S0304-3800(01)00520-8, 143-152. Elsevier
Ecological Modelling, 149, 143-152
Ecological Modelling, 149, 143. Elsevier
In the Sahel, poor soil quality and rainfall levels have a great influence on pasture production and hence on secondary output. In areas where rainfall is the limiting factor for primary production, recovery of primary and secondary production after
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5d2412bd67a3eac708ad70dc52b6cf1
https://doi.org/10.1016/s0304-3800(01)00520-8
https://doi.org/10.1016/s0304-3800(01)00520-8