The document discusses four current approaches in agricultural extension:
1. Decentralized decision making and bottom-up planning through Panchayati Raj institutions.
2. Farming system approach which takes a holistic view of the farm as an interconnected system.
3. Farming situation based extension which develops recommendations specific to different crop situations through farmer participation.
4. Category management systems for retail merchandising which use data-driven planning and forecasting to optimize product assortments.