The original vegetation of the high plains type consisted mainly of buffalo grass (Buchloë dactyloides), and blue grama (Bouteloua gracilis), but in places little bluestem (Schizachyrium scoparium), wire grass (Aristida spp.), and side oats grama (Bouteloua curtipendula) occur. Other plants such as scurf pea (Psoralea tenuiflora), partridge pea (Chamaecrista fasiculata), blazing star (Liatris spp.), day flower (Commelina erecta), bush morning glory (Ipomoea leptophylla) and gumweed (Grindelia squarrosa), appear on more shallow soils. In the wallows or sinks, smartweed (Polygonum spp.), ironweed (Vernonia spp.), door weed (Polygonum aviculare) and snow-on-the-mountain (Euphorbia marginata) are found. Cultivated fields support russian thistle (Salsola kali), sunflower (Helianthus spp.), cockle burr (Xanthum strumarium), lambs quarter (Chenopodium album), bindweed (Convolvulus arvensis), ragweed (Artemisia spp.) and grassbur (Cenchrus carolinianus). Cholla (Opuntia imbricata) and prickly pear (Opuntia phaeacantha) cacti have appeared as a result of close grazing on some pastureland of the type.
The growing season extends from 180 to 190 days. The average annual rainfall runs from 17-24 inches. High summer temperatures of 112 degrees have been recorded at Hooker, with a mean annual temperature of 55.7 degrees.
Topographically these "high plains" are in a stage of extreme youth and drainage channels have not developed. Under the natural grass cover, most of the rainfall was absorbed in this soil or flowed a short distance into one of the sinks, where is evaporated or percolated downward to the ground water level. Geologically, the material supporting this type consists of an apron of debris extending eastward from the Rocky Mountains, having been deposited during Tertiary times.
The soils are generally fertile, having developed under a grass cover and comparatively low rainfall. Nitrogen content is high and very little leaching has taken place.
The following outline incident of cropping in Cimarron county illustrates what happened throughout the entire Shortgrass - High Plains Game Type. Many settlers left the country between 1908-1912. There were crop failures between 1912-1920. The years between 1920-1923 were so dry that there was barely sufficient feed for livestock. In 1926 there was a bumper crop, in 1927 a complete failure and, since then, about three or four fair crops and the rest poor or failures. Since 1932 the area has suffered much from extreme drouth, dust storms, crop failures and low prices.
Around 50 percent of the Shortgrass - High Plains Game Type is under cultivation. The following table shows these percentages for the three principal counties of the type:
Cimarron Texas Beaver |
28.9 61.3 50.8 |
10.9 5.1 3.9 |
60.2 33.6 45.3 |
Plate XXX - Abandoned farmstead on Short Grass-High Plains Game Type. Serves as headquarters for a large covey of scaled quail.
Plate XXXI - Russian thistle collected against barbed wire. Scaled quail utilize these for fall cover.
Plate XXXII - Showing absence of winter game cover along highway in Short Grass-High Plains Game Type, Texas County.
Plate XXXIII - The beginning of recovery of Short Grass-High Plains Game Type, denuded by wind erosion. Note abundance of young sprouts of Russian thistle.
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