. Effects of different systems and intensities of grazing upon the native vegetation at the Northern Great Plains Field Station . Fig. 10.—Diagram showing the average quantity of vegetation produced bv different species and groups of plants at the end of 30-day periods for the period from 1917 to 1921, inclusive. The lines represent the green weight of the vegetation in grams per square-meter quadrant. fairly uniform growth throughout the season. This is one of the reasons why it is such a valuable grass for grazing. Both Stipa and other grasses also produce fairly uniform lines, but their pro
. Effects of different systems and intensities of grazing upon the native vegetation at the Northern Great Plains Field Station . Fig. 10.—Diagram showing the average quantity of vegetation produced bv different species and groups of plants at the end of 30-day periods for the period from 1917 to 1921, inclusive. The lines represent the green weight of the vegetation in grams per square-meter quadrant. fairly uniform growth throughout the season. This is one of the reasons why it is such a valuable grass for grazing. Both Stipa and other grasses also produce fairly uniform lines, but their production is very ligjit toward the close of the season. In the case of the two species of Carex there is a pronounced abundant early growth. C. -fUifolia is one of the earliest plants to mature. It sheds its seeds usually late in May and does not make much growth after that time. C. heliophila is not quite as early in maturing and makes more growth later in the season. The two species are shown together, but beginning in 1919 they were separated for the above reasons. In the
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectforagep, bookyear1923
