Date of this Version
The beginning of a disease of Boateloua curtipendula, first observed in 1937 but occurring in alarming proportions in 1939, is of much interest. The fact that this grass has increased greatly during the past six years, from a rank of seventh or eighth among dominants of true prairie to one of the two or three most important species, adds unusual economic interest. Moreover, side-oats grama not only has very wide distribution and is being grown abundantly in grass nurseries of the Soil Conservation Service but also it is one of the most drought-resistant among the best grasses for rejuvenating depleted pastures and reseeding abandoned lands. For these reasons, although the cause of the disease has not been determined, a rather complete account of its occurrence and increase seems warranted.