. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BULLETIN No. 981 Contribution from the Bureau of Plant Industry WM. A. TAYLOR, Chief. J&r^'j'i. Washington, D. C. PROFESSIONAL PAPER December 21, 1921 SUDAN GRASS AND RELATED PLANTS. By H. N. Vinall, Agronomist, and R. E. Getty, Assistant Agrostologist, Office of Forage-Crop Investigations. CONTENTS. Introduction into the United States 1 Description and botanical relationships 3 Distribution and importance of Sudan grass in Africa 1G Sudan grass in other countries 17 Soil relations 17 Climatic adaptations 18 Relati
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BULLETIN No. 981 Contribution from the Bureau of Plant Industry WM. A. TAYLOR, Chief. J&r^'j'i. Washington, D. C. PROFESSIONAL PAPER December 21, 1921 SUDAN GRASS AND RELATED PLANTS. By H. N. Vinall, Agronomist, and R. E. Getty, Assistant Agrostologist, Office of Forage-Crop Investigations. CONTENTS. Introduction into the United States 1 Description and botanical relationships 3 Distribution and importance of Sudan grass in Africa 1G Sudan grass in other countries 17 Soil relations 17 Climatic adaptations 18 Relative importance of the crop 21 Hay production 26 Date of seeding 27 Method of seeding 28 Page. Rate of seeding 33 Harvesting 34 Sudan grass and legume mixtures 37 Utilization of Sudan grass 41 Seed production 52 Diseases of Sudan grass 63 Insect enemies of Sudan grass 63 Weeds 64 Summary 64 Literature cited 67 INTRODUCTION INTO THE UNITED STATES. Sudan grass was introduced into the United States from Africa in 1909, through the efforts of C. V. Piper, Agrostologist in Charge of the Office of Forage-Crop Investigations, Bureau of Plant Industry, United States Department of Agriculture. Eight ounces of seed were obtained in the original importation (fig. 1), and a portion of this was planted that year at the forage-crop field station at Chillicothe, From this small beginning has come practically all of the 1 Many of the data here recorded were contributed by the following members of the staff of the Office of Forage-Crop Investigations, who personally conducted the experiments at the points indicated: R. W. Edwards, at Chillicothe, Tex. (resigned Feb. 25, 1918); A. B. Cron, at Amarillo, Tex.; Roland McKee, at Chico, Calif.; Samuel Garver, at Redfield, S. Dak.; and H. R. Reed, at Bard, Calif. Acknowledgment is made of their assistance and of the cooperation of the agronomists of the State Agricultural Experiment Stations and the superintendents of the field stations of the Uni
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