Grading characters

Pattern of assessment

Grade allotted

1) Tolerance

APTI

9.0 - 12.0

+

12.1 - 15.0

++

15.1 - 18.0

+++

18.1 - 21.0

++++

21.1 - 24.0

++++

2) Biological and socio-economic

Plant habit

Small

-

Medium

+

Large

++

Canopy structure

Sparse/irregular/globular

-

Spreading crown/open/semi-dense

+

Spreading dense

++

Type of plant

Deciduous

-

Evergreen

+

3) Laminar structure

Size

Small

-

Medium

+

Large

++

Texture

Smooth

-

Coriaceous

+

Hardiness

Delineate

-

Hardy

+

Economic value

Less than three uses

-

Three or four uses

+

Five or more uses

+ +