Subsistence agriculture in Northern Namibia has been unable to feed the population due to outdated agricultural techniques and erratic rainfall patterns. However, a novel Conservation Agriculture (CA) technique has been developed and introduced in Namibia which significantly boosts yields and stabilises them against droughts and floods. However, at the end of 2011 only 800 farmers had adopted the method and so there is an urgent need for up-scaling. The purpose of this study was to understand adoption of CA by studying farmers' socio-psychological motivation and decision making processes, and general aiding and hindering factors in order to inform NGO's and government on what to consider in up-scaling CA. The study was based on the Theory of Planned Behaviour (Ajzen, 1991) and a Decision Making Process Model that was derived from Verbeke (2000) and Oehlmer et al. (1998). Fieldwork consisted of 20 interviews with CA farmers, non-CA farmers, extension officers, regional counsellors and tractor owners and was carried out in the North Central Regions of Namibia from January to March 2013. Purposive sampling and semi-structured interviews were employed and this was augmented with participant observations (Bernard, 2006). Transcribed interviews were coded both inductively and deductively and analysis was done by structuring themes along the theoretical background. Keywords: Namibia, conservation agriculture, theory of planned behaviour, farmer decision making, adoption, ripping, subsistence.