Effects of different systems and Effects of different systems and intensities of grazing upon the native vegetation at the Northern Great Plains Field Station effectsofdiffere1170sarv Year: 1923 i:#-; Fig. I.—Unit in the 30-Acre Pasture Closed to Grazing in I920. Note the planl j of ArU misia frigida, which are taller and more numerous than in the mm in L918and 1919. Oct ber, L921. Fig. 2.—Unit in the 30-Acre Pasture Closed to Grazing in 1921. Note the plants of A rlcmisia frigiia, which are much larger, coarser, and thicker on the ground than in the units closed during the previous seasons

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Effects of different systems and Effects of different systems and intensities of grazing upon the native vegetation at the Northern Great Plains Field Station effectsofdiffere1170sarv Year: 1923 i:#-; Fig. I.—Unit in the 30-Acre Pasture Closed to Grazing in I920. Note the planl j of ArU misia frigida, which are taller and more numerous than in the mm in L918and 1919. Oct ber, L921. Fig. 2.—Unit in the 30-Acre Pasture Closed to Grazing in 1921. Note the plants of A rlcmisia frigiia, which are much larger, coarser, and thicker on the ground than in the units closed during the previous seasons. October, 1921.

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