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Synopsis: Meadows of rush, sedge and grass were managed to produce two crops in the same growing season. Irrigation stimulated regrowth and produced 300 to 600 pounds of dry matter per acre. N with irrigation added 9 pounds dry matter per pound N. N also increased hay yields the following year. P had no effect on regrowth or on hay yields the following year. Advancing the date of hay harvest increased regrowth yields without decreasing hay yields.
2 Research Agronomist, Crops Research Division, ARS, USDA, Burns, Oregon.
Received for publication August 10, 1962.
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