Effects of different systems and intensities of grazing upon the native vegetation at the Northern Great Plains Field Station effectsofdiffere1170sarv Year: 1923 Fig. Unit in the 30-AcreIPasture Closed to Grazing in 1918. Note the plants of Artemisia frigida, which arc about normal in size and number. The top of the frame in each case marks the divisi< n between the closed units and those ne\ er grazed. October, 1921. Fig. 2.—Unit in the 30-Acre Pasture Closed to Grazing in 1919. Note the plants of A rttmisia frigida, which are about normal in size but somewhal thicker on the groun

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Effects of different systems and intensities of grazing upon the native vegetation at the Northern Great Plains Field Station effectsofdiffere1170sarv Year: 1923 Fig. Unit in the 30-AcreIPasture Closed to Grazing in 1918. Note the plants of Artemisia frigida, which arc about normal in size and number. The top of the frame in each case marks the divisi< n between the closed units and those ne\ er grazed. October, 1921. Fig. 2.—Unit in the 30-Acre Pasture Closed to Grazing in 1919. Note the plants of A rttmisia frigida, which are about normal in size but somewhal thicker on the ground than those shown in Figure 1. October, 1921.

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