GUIDE for DETERMINING SIMILARITY INDEX (Range Condition)

GUIDE FOR DETERMINING SIMILARITY INDEX (Range Condition)

Sedimentary Plains – 11 to 14 Inch Precipitation Zone

ECOLOGICAL SITES / Loamy
(Lo) / Clayey
(Cy) / Thin Loamy
(TLo) / Thin Clayey
(TCy) / Shallow
(Sw) / Overflow
(Ov) / Subirrigated
(Sb)
Plant Types:
GRASSES AND GRASSLIKES / % / lbs/acre / % / lbs/ acre / % / lbs/ acre / % / lbs/ acre / % / lbs/ acre / % / lbs/ acre / % / lbs/ acre
Basin wildrye / 40 / 1000 / 35 / 1400
Baltic rush / 5 / 125 / 5 / 200
Bearded wheatgrass / 10 / 250 / 10 / 400
Bluebunch wheatgrass / 40 / 600 / 40 / 576 / 50 / 600 / 40 / 480 / 50 / 500
Green needlegrass / 15 / 225 / 20 / 288 / 20 / 240 / 20 / 240 / 10 / 100 / 25 / 625
Reedgrass spp. / 30 / 1200
Needleandthread / 10 / 150 / 15 / 180 / 10 / 120 / 10 / 100
Plains muhly / 5 / 75 / 5 / 72 / 5 / 60 / 5 / 60 / 5 / 50
Prairie cordgrass / 10 / 250 / 20 / 800
Prairie sandreed / 5 / 50
Slender wheatgrass / 10 / 250 / 10 / 400
Tall sedges / 10 / 400
Tufted hairgrass / 15 / 600
Western or thickspike wheatgrass / 10 / 150 / 30 / 432 / 10 / 120 / 20 / 240 / 10 / 100 / 15 / 375 / 5 / 200
Other native grasses & grasslikes / 10 / 150 / 10 / 144 / 10 / 120 / 10 / 120 / 10 / 100 / 10 / 250 / 10 / 400
Maximum Grasses Allowed / 85 / 1275 / 80 / 1152 / 80 / 960 / 80 / 960 / 70 / 700 / 85 / 2125 / 85 / 3400
FORBS:
Maximum Forbs Allowed* / 10* / 150 / 10* / 144 / 10* / 120 / 10* / 120 / 10* / 100 / 5* / 125 / 5* / 200
SHRUBS:
Fringed sagewort / 1 / 15 / 1 / 14 / 2 / 24 / 2 / 24 / 5 / 50 / 1 / 25
Gardner saltbush / 5 / 72 / 5 / 60 / 10 / 120
Rose / 1 / 15 / 1 / 14 / 2 / 24 / 2 / 24 / 5 / 50 / 1 / 25 / 5 / 200
Rubber rabbitbrush / 1 / 14 / 2 / 24 / 2 / 24 / 5 / 50
Sagebrush spp. / 1 / 15 / 10 / 144 / 2 / 24 / 2 / 24 / 5 / 50 / 5 / 125
Snowberry / 1 / 15 / 1 / 14 / 2 / 24 / 2 / 24 / 5 / 50 / 5 / 125 / 5 / 200
Willow / 5 / 200
Winterfat / 5 / 75 / 5 / 72 / 10 / 120 / 10 / 120 / 5 / 50
Other shrubs / 5 / 75 / 5 / 72 / 10 / 120 / 10 / 120 / 20 / 200 / 10 / 250 / 10 / 400
Maximum Shrubs Allowed / 5 / 75 / 10 / 144 / 10 / 120 / 10 / 120 / 20 / 200 / 10 / 250 / 10 / 400
Total Production @ 12 inches / 100 / 1500 / 100 / 1440 / 100 / 1200 / 100 / 1200 / 100 / 1000 / 100 / 2500 / 100 / 4000
* 2% Limit on each Native Forb