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<br />002310 <br /> <br />should be limited, however, so that not <br />more than about half the weed growth <br />will be taken. Limited use during the <br />winter may be permitted, but grazing <br />sho,uld at no time be suffieient to destroy <br />the eover of annual weeds and such <br />gTasses as are present. The annual- <br />weeds type is largely on classes III, <br />IV, and VI and is either abandoned <br />cultivated land or grassland that is so <br />depleted that it is not possible to deter- <br />mine the type. It is the most severely <br />depleted range type, but at the same <br />time it is the most productive of the <br />depleted types. Grass could be rees- <br />tablished on most of it. <br /> <br /> <br /> <br />H7-588 <br />Figure 9.-Shorl-gras8 J'allge in good condilion. Much of the depleted range of the county <br />once had similar cover. <br /> <br />The half-shrub and annual-weeds <br />types arc subject to similar manage- <br />ment for proper use. The half-shrub <br />type is for the most part degenerated <br />grassland. It is most likely to oeeur <br />on shallow and gravelly soils of class <br />VI. These areas should, be given <br />periodie rests during the growing sea- <br />son. The amount of grazing should be <br />restricted to such a degree that the <br />grass which is present may have an <br />opportunity to regain vigor and vitality <br />and to increase in, arnount. The an- <br />mml-weeds type is almost entirely <br />depleted grassland, but as a rule <br />occurs on better sites than the half- <br />shrub, usually on class III, IV, and VI <br />lands. Grazing should be restricted to <br />permit grasses to increase. The chief <br />forage produced at present is Russian <br />thistles, which have a rather low forage <br />value. These weeds are relatively pal- <br />atable early in the season and generally <br />can be grazed from about May 20 to <br />July 10 wi thout damage to the grass <br />that is present. This may also help <br />to eliminate competition for the few <br />grass plants that arc present. Grazing <br /> <br />REGRASSING CUL'l'IVATED LAND AND <br />DENUDED GRASSLAND <br /> <br />Large areas of eroded land, now in <br />cultivation ,or formerly cultivated must <br />be returned to grass in order to insure <br />permanent stabilization and economic <br />returns. There is also much land in <br />the eOl'nty that has never been culti- <br />vated, but because of wind erosion, <br />originating from nearby cultivated land, <br /> <br />Western and Southeastern Baca County SoU Conservation Districts, Colorado <br /> <br />21 <br />