Koford 301 CynomyS ludovicianus October 12, 1955 Nr. Dover, Weld G., Gls. cover if high population C.l. here. Grass not vigorous & not apparently more in part of pasture where no C.l. // Idea: intro- duced falx (Kochia, Salsolea) may have greatly altered food supply & total effect of prairie sage (effect on diet? dead dieaway produced?). October 13, 1955 Harmer & Weld Gls., Gls. With Willard Brown, Range Conservationist, Soil Cons. Serv., Ft. Collins, visited Wellington reserve, CPER, Nov. 10 (ash emerald) colonies. At Wellington colony Brown agreed that evidence indicated C.l. drilling brush & keeping it low, both Chrysothamnus & Atriplex. //Bril. Brown thought Atriplex on C.l. towns might well indicate letup in grazing intensity rather than downward trend. He said that Bout. groe. dies when covered, as wind blown soil makes native range poorer on un- tilled land adjacent to ploughed. Muckl. town, he regards as an overgrazed site, coming in when Bda. depleted. He agrees that Bgr. was on slopes & lighter soils compared with Bda. or lower & heavier soils. Sheep, he says, prefer Bda. Bgr. - Bda. to Acm. so that latter may be in high age the utilization heavy. In gen'l he knows of no C.l. towns range above fair condition. // Brown considered CPER colony to be "prairie upland" in "fair con- dition." (Bgr. probably greens superabundant than Bda.). Possibly C.l. increase wilderness by increasing bare ground. Noted several spots where C.l. now cutting areas of Bda. close to a under ground surface, the whole having scratched up appearance, & grass cut (1" tall) easily scraped off with fingers, leaving few stalks showing on bare ground. Much of Bda. still