From a background of public administration, I could comment from a generalist points of view based on my experience working in humanitarian, development (nexus) and academic fields.
For PPP to function, it needs to be based on a common ground. It means, with common understanding across sector -- the public sector, agriculture sector, and the private sector -- on the basic, also on the outcome to be achieved through PPP.
It may sound easy, but very often a diversity of understanding exist and it could hinder the result of partnership and reduce the its impact.
For instance, strengthening the 'resilience' and being 'accountable towards populations' are an increasingly shared agenda. Yet, these terms hide a variety of definitions, understanding, use, and interpretations. As a case in point, no less than 63 different definitions of 'resilience' have been identified across the humanitarian sector according to a research conducted by the Geneva Centre for Education and Research in Humanitarian Action. At the operational level, this can create confusion and miscommunication. From a policy-making and implementation perspectives, using the same word to refer to different concepts and realities, practitioners send blurred messages to decision makers.
Mme Joy Muller