The potential of collective incentives for agri-environmental policy is investigated through the lens of behavioral economics. The first chapter compares results from lab and lab-in-field experiments on two types of subsidy schemes within the framework of a threshold public good game. The second chapter presents a case study analysis of data from a collective agri-environmental scheme (cAES) that essentially constitutes an applied version of the threshold public good with the conditional subsidy framework. The third chapter comprises a more detailed econometric analysis of the cAES data at the individual farm level. The fourth chapter discusses the role of collective farmer organizations in the implementation of cAES. The fifth chapter prop...