Physiological plant disorders in general (including forest trees and aquatic plants), nutritional

disorders, genetic disorders in useful plants; deficiency diseases;

Injuries to useful plants (but not forest trees) caused by atmospheric factors (such as heat, cold,

flooding, wind), fire, equipment and other physical agents;

Materials, methods and programmes for prevention and control of plant disorders and plant injuries;

Phytotoxicity, toxic effects of substances poisonous to plants;

Plant hardiness; resistance to climate, extreme conditions.

For: breeding for resistance to climate, extreme conditions, see F30

damage to plant products, see J11

forest fire control, see K70

forest injuries and protection, see K70

weed competition, see H60