TECHNOLOGICAL ADVANCES AND IMPROVEMENT IN WATER USE EFFICIENCY FOR IRRIGATION
By R.D. Singh Director National Institute of Hydrology
INTRODUCTION
INTRODUCTION (contd…)
OBJECTIVES
IRRIGATION EFFICIENCY
IRRIGATION EFFICIENCY (contd…) Canal conveyance eff. (ec) expresses the efficiency of water transport determined by soil types and irrigation system such as lined or unlined canals, operation and maintenance of water distribution structures along irrigation canals etc. Field application eff. (ea) determined by the irrigation methods used at farm level Overall irrigation scheme efficiency (eo) eo = ea *ec
MAJOR ISSUES CONCERNING WATER USE EFFICIENCY
MAJOR ISSUES CONCERNING WATER USE EFFICIENCY (2)
SCOPE FOR IMPROVING IRRIGATION EFFICIENCY
OPTIONS FOR IMPROVING IRRIGATION WATER USE EFFCIENCY
(I)Improvement in water conveyance, application & management
(II) Watershed Management Programmes
(III) Tanks Management
(IV) Conjunctive Use of Water
(V) IMPROVED IRRIGATION METHODS
(VI) On-Farm Irrigation Scheduling Based on Soil Moisture Monitoring
(VII) System of Rice Intensification (SRI)
(VIII) Laser Aided Precision Land Leveling
(IX) Mulching
(X) Deficit Irrigation Practices
(XI) Virtual Water Trade
(XII) Reducing Wastage along the Food Chain