The document discusses public-private partnerships (PPPs) for irrigation development and assesses models in Ghana and Tanzania. It finds that while PPPs are intended to bring private financing and expertise to irrigation, there is little knowledge about how well local populations fare under these arrangements. It analyzes a case study of Kilombero Plantation Ltd (KPL) in Tanzania, a joint venture between a private firm and government authority. The partnership has faced challenges including land rights issues and difficulty aligning profit and development goals between parties. Key challenges identified in ensuring PPPs benefit farmers include competing water uses, access to markets and training, and building trust between groups.