This paper describes a complex, dynamic simulation model that has been developed for the analysis of integrated weed management programmes for the control of annual barnyardgrass (Echinochloa crus-galli) in rice farming systems in the Philippines. Users of the model may simulate any feasible...

This paper has been published in a peer-reviewed journal as: Kragt, M.E., Pannell, D.J., Robertson, M.J. & Thamo, T. (2012) Assessing costs of soil carbon sequestration by crop-livestock farmers in Western Australia, Agricultural Systems, 112: 27-37. DOI: 10.1016/j.agsy.2012.06.005

Interviews and mail-out/mail-back surveys were conducted in 1992 with 38 conventional and 41 sustainable North Dakota farmers. The results emphasize the differences and similarities of these two types of farmers. Sustainable farms had more diverse cropping practices and were more likely to raise...

This paper has been published in a peer-reviewed conference as: Kragt, M.E., Mugera, A. & Kolikow, S. (2013) An interdisciplinary framework of limits and barriers to agricultural climate change adaptation. In: Piantadosi, J., Anderssen, R.S. & Boland J. (Eds) MODSIM2013, 20th International...

The farm-level economics of conservation agriculture (zero tillage, mulching and crop rotation)are described, reviewed and modelled. The economics are defined broadly to include not just shortterm financial benefits and costs, but also the whole-farm management context, constraints on key...