Agrobiodiversity is widely recognized as essential for smallholder agriculture, particularly for enhancing resilience to disruptions which are increasingly frequent and intense. However, whether agricultural policies support or hinder agrobiodiversity in these systems remains debated. A deeper understanding of how policies intersect with other change drivers and local practices is crucial to improving decision-making. Using a case study from northwest Morocco, this research explores the complex interplay between public policies and other factors affecting local agrobiodiversity management. This study is based on the analysis of semi-structured interviews conducted with 48 farmers documenting the changes in their farm and agrobiodiversity management system, and comparing it with that of their parents, as well as the perceived drivers of these changes. The results of this analysis were cross-checked with literature on agricultural policies. Our results show that major changes in agrobiodiversity management systems occurred at three levels: (i) seeds and varieties of annual crops; (ii) farming activities (i.e., crop species and livestock); and (iii) associated agricultural practices from plot to landscape. Public policies were found to be important drivers of these changes but interacted with other drivers such as climate change, rural exodus and other societal and economic shifts. Nevertheless, our research also highlights the persistence of local practices and motivations that sustain agrobiodiversity despite strong pressures, particularly through culinary practices, crop rotation, and agroforestry. This study underscores the complex, context-specific interactions that shape local agrobiodiversity management systems. It discusses the implications of changes in agrobiodiversity management systems on the resilience of farm livelihoods, and emphasizes the need to recognize local distinctiveness in adapting these systems to global change.