Laserfiche WebLink
6 <br /> rating in the 1988 sampling. Crested wheatgress , more <br /> widely used in grass seedings than any other species in the <br /> West for the past 50 years has had its best performance <br /> over the longtime periods on soils other than sand. <br /> Crested wheatgrass comprised 11 . 7 per cent of the cover <br /> and 10 per cent of the biomass in the ' 85 RA. For the <br /> ' 86 FA Crested wheatgrass formed only 1 . 7 per cent of the <br /> cover and one per cent of the biomass . Intermediate wheat- <br /> grass (pubescent is included here) grows in rangeland <br /> seedings in zones receiving 17 or more inches of annual <br /> precipitation with most of this distributed during the <br /> cool season. In the mine location area with less than 14 <br /> inches of primarily warm season precipitation, it is to <br /> be expected that Intermediate wheatgrass will be under <br /> severe handicaps to take an important place in forming a <br /> lasting plant cover . In the ' 85 RA it formed 20 per cent <br /> of the cover and 10 per cent of the biomass . With these val- <br /> ues it can be decided that these grasses can be depended <br /> upon for a part in short term soil protection. The <br /> younger RA planted in 1986 had a poor showing of these <br /> wheatgrasses . Only a trace of the cover and biomass were <br /> produced by these grasses . <br /> With ratings this low it is logical to recommend <br /> that these wheatgrasses need not be included in the seeding <br /> mixture . <br />