Irrigation: artificial watering of soil for the purpose of plant production;

Irrigation methods, systems and projects: furrow irrigation, overhead irrigation, subsurface

irrigation, trickle irrigation, etc.;

Cultivation under irrigation;

Plant response to irrigation;

For: drainage, see P11

irrigation equipment, see N20

soil conservation, see P36

soil permeability, see P33

soil reclamation, see P36

soil-water relationship, see P33

water conservation and management, see P10

water quality, see P10

water supply, see P10