. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 465 & •^smi^ „ _.„„... ,„, „ •> Contribution from the Bureau of Biological Survey E. W. NELSON, Chief. JPJV&WU Washington, D. C. February 23, 1917 PROPAGATION OF WILD-DUCK FOODS. By W. L. McAtee, Assistant Biologist. CONTENTS. Introduction 1 Wild rice 4 Wild celery 9 Pondweeds 13 Enemies of wild rice, wild celery, and pond- weeds 20 The arrowheads 21 Delta potato 21 Wapato 24 Chufa 28 Wild millet 32 The waterlily group 35 Banana waterlily 36 INT
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 465 & •^smi^ „ _.„„... ,„, „ •> Contribution from the Bureau of Biological Survey E. W. NELSON, Chief. JPJV&WU Washington, D. C. February 23, 1917 PROPAGATION OF WILD-DUCK FOODS. By W. L. McAtee, Assistant Biologist. CONTENTS. Introduction 1 Wild rice 4 Wild celery 9 Pondweeds 13 Enemies of wild rice, wild celery, and pond- weeds 20 The arrowheads 21 Delta potato 21 Wapato 24 Chufa 28 Wild millet 32 The waterlily group 35 Banana waterlily 36 INTRODUCTION. Information concerning the propagation of valuable wild-duck foods is constantly requested by State game commissions, game pro- tective associations, and sportsmen's clubs, and by individuals inter- ested in the protection, preservation, and propagation of waterfowl. The Biological Survey has endeavored to meet the demand by issu- ing three publications1 on the more important food plants of wild ducks, by correspondence relating to local problems, and in certain cases by special examination and report. The bulletins thus far published have contained accounts of the value, nature, range, and methods of propagation of 19 groups of plants comprising more than 60 species. The present bulletin is a revision of the first two of these publica- tions and. discusses the following plants suitable for wild-duck food: Wild rice, wild celery, pondweeds, arrowheads (especially delta iBiol. Surv. Circ. No. 81, Sept. 9, 1911; and TJ. S. Dept. Agr. Bulls. No. 58, Feb. 7, 1914, and No. 205, May 20, 1915. Note.—This bulletin is for general distribution among persons and organizations in- terested in the protection, preservation, and propagation of waterfowl. It supersedes Biological Survey Circular No. 81, dealing with wild rice, wild celery, and pondweeds; and Department Bulletin No. 58, dealing with delta potato, wapato, chufa, wild millet, and banana Plea
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