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Modelling the dynamics of agricultural development at farm and regional level

Bontkes, Tjark Struif; Keulen, Herman van - In: Agricultural Systems 76 (2003) 1, pp. 379-396

Persistent link: https://www.econbiz.de/10005373559

Modeling biomass, nitrogen and water dynamics in rice-wheat rotations

Jing, Qi; Keulen, Herman van; Hengsdijk, Huib - In: Agricultural Systems 103 (2010) 7, pp. 433-443

Rice-wheat cropping systems occupy between 24 and 26Â Mha in Asia. A main feature of RW rotations is the alternation of aerobic and anaerobic soil conditions. This alternation of flooded and non-flooded soil conditions is conducive to N emissions, especially with the current high N rates in RW...

Persistent link: https://www.econbiz.de/10008870780

Sustainable resource management and policy options for rice ecosystems

Roetter, Reimund; van Keulen, Herman; Hengsdijk, Huib; … - In: Agricultural Systems 94 (2007) 3, pp. 763-765

Persistent link: https://www.econbiz.de/10005373749

Feed resources, livestock production and soil carbon dynamics in Teghane, Northern Highlands of Ethiopia

Abegaz, Assefa; van Keulen, Herman; Oosting, Simon J. - In: Agricultural Systems 94 (2007) 2, pp. 391-404

Persistent link: https://www.econbiz.de/10005216386

Heterogeneity and diversity in less-favoured areas

van Keulen, Herman - In: Agricultural Systems 88 (2006) 1, pp. 1-7

Persistent link: https://www.econbiz.de/10005216397

Revisiting a `cure against land hunger': soil fertility management and farming systems dynamics in the West African Sahel

de Ridder, Nico; Breman, Henk; van Keulen, Herman; … - In: Agricultural Systems 80 (2004) 2, pp. 109-131

Persistent link: https://www.econbiz.de/10005508365

Resource use dynamics and interactions in the tropics: Scaling up in space and time

Giller, Ken E.; Rowe, Ed C.; de Ridder, Nico; van … - In: Agricultural Systems 88 (2006) 1, pp. 8-27

Persistent link: https://www.econbiz.de/10005387759

Quantitative analyses of natural resource management options at different scales

van Keulen, Herman - In: Agricultural Systems 94 (2007) 3, pp. 768-783

Persistent link: https://www.econbiz.de/10005387859

Poverty and biodiversity trade-offs in rural development: A case study for Pujiang county, China

Hengsdijk, Huib; Guanghuo, Wang; den Berg, Marrit M. Van; … - In: Agricultural Systems 94 (2007) 3, pp. 851-861

Persistent link: https://www.econbiz.de/10005387941

Sustainable land use and food security in developing countries: DLV's approach to policy support

van Keulen, Herman; Kuyvenhoven, Arie; Ruben, Ruerd - In: Agricultural Systems 58 (1998) 3, pp. 285-307

Persistent link: https://www.econbiz.de/10005387943