TECHNOLOGICAL ADVANCES AND IMPROVEMENT IN WATER USE

EFFICIENCY FOR IRRIGATION

ByR.D. Singh

DirectorNational Institute of Hydrology

Roorkee

INTRODUCTION

INTRODUCTION (contd…)

OBJECTIVES

IRRIGATION EFFICIENCY

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

IRRIGATION EFFICIENCY (contd…)

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