Numerous studies have been published during the past two decades that use simulation models to assess crop yield gaps (quantified as the difference between potential and actual farm yields), impact of climate change on future crop yields, and land-use change. However, there is a wide range in qua...
Grassini, Patricio
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Bussel, Lenny G. J. van
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Wart, Justin van
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Wolf, Joost
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Claessens, Lieven
,
Yang, Haishun
,
Boogaard, H.
,
Groot, Hugo de
,
Ittersum, Martin K. van
,
Cassman, Kenneth G.
,
[How good is good enough? Data requirements for reliable crop yield simulations and yield-gap analysis]
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How good is good enough? Data requirements for reliable crop yield simulations and yield-gap analysis
Accurate estimation of yield gaps is only possible for locations where high quality local data are available, which are, however, lacking in many regions of the world. The challenge is how yield gap estimates based on location-specific input data can be used to obtain yield gap estimates for larg...
Bussel, Lenny G. J. van
,
Grassini, Patricio
,
Wart, Justin van
,
Wolf, Joost
,
Claessens, Lieven
,
Yang, Haishun
,
Boogaard, H.
,
Groot, Hugo de
,
Saito, Kazuki
,
Cassman, Kenneth G.
,
Ittersum, Martin K. van
,
[From field to atlas: Upscaling of location-specific yield gap estimates]
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From field to atlas: Upscaling of location-specific yield gap estimates
In 2018, an experiment was run at the IOP farm in Tanzania. Four nutrient management treatments were combined factorial with two tillage options. The results show that the lowest maize yield was obtained under conventional tillage without fertilizer application, and the highest with reduced tilla...
Mtakwa, Peter
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Brentrup, Frank
,
Assey, Peter
,
Loon, Marloes P. van
,
Hijbeek, Renske
,
Berge, Hein F.M. ten
,
Ittersum, Martin K. van
,
[D1940: Results from the Fertilizer demonstration experiment with maize at IOP Farm in Iringa, Tanzania in 2018]
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D1940: Results from the Fertilizer demonstration experiment with maize at IOP Farm in Iringa, Tanzania in 2018
Reducing greenhouse gas (GHG) emissions and increasing soil or biomass carbon stocks are the main agricultural pathways to mitigate climate change. Scientific and policy attention has recently turned to evaluating the potential of practices that can increase soil carbon sequestration. Forty perce...
Hijbeek, Renske
,
Loon, Marloes P. van
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Wollenberg, Eva K.
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White, Julianna M.
,
Ittersum, Martin K. van
,
[Fertiliser use and soil carbon sequestration: Key messages for climate change mitigation strategies]
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Fertiliser use and soil carbon sequestration: Key messages for climate change mitigation strategies
Greenhouse gas emissions from fertilizer usage in sub-Saharan Africa are currently low due to low application rates of nitrogen fertilizers. As African countries begin to implement their Nationally Determined Contributions to the Paris Agreement, there is an opportunity to improve crop productivi...
Richards, Meryl
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Ittersum, Martin K. van
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Mamo, Tekalign
,
Stirling, Clare M.
,
Vanlauwe, Bernard
,
Zougmoré, Robert B.
,
[Engrais et développement sobre en carbone en Afrique subsaharienne]
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[Fertilizers and low emission development in sub-Saharan Africa]
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Fertilizers and low emission development in sub-Saharan Africa
Nutrient limitation is a major constraint in crop production in sub-Saharan Africa (SSA). Here, we propose a generic and simple equilibrium model to estimate minimum input requirements of nitrogen, phosphorus and potassium for target yields in cereal crops under highly efficient management. The m...
Berge, Hein F.M. ten
,
Hijbeek, Renske
,
Loon, Marloes P. van
,
Rurinda, Jairos
,
Tesfaye, Kinde
,
Zingore, Shamie
,
Craufurd, Peter Q.
,
Heerwaarden, Joost van
,
Brentrup, Frank
,
Schröder, Jaap J.
,
Boogaard, Hendrik L.
,
Groot, Hugo L.E. de
,
Ittersum, Martin K. van
,
[Maize crop nutrient input requirements for food security in sub-Saharan Africa]
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Maize crop nutrient input requirements for food security in sub-Saharan Africa
Current initiatives to store carbon in soils as a measure to mitigate climate change are gaining momentum. Agriculture plays an important role in soil carbon initiatives, as almost 40% of the world’s soils are currently used as cropland and grassland. Thus, a major research and policy question is...
Hijbeek, Renske
,
Loon, Marloes P. van
,
Ittersum, Martin K. van
,
[Fertiliser use and soil carbon sequestration: trade-offs and opportunities]
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Fertiliser use and soil carbon sequestration: trade-offs and opportunities