From these results, the following conclusions are drawn. For the propagation 

 of high-bush blueberry by softwood cuttings, a mixture of sphagnum peat and 

 sand in equal parts is to be preferred to sand as the rooting medium. If cuttings 

 are to be used untreated, they should be taken not later than two to three weeks 

 before the first berries ripen. Whether taken then or later, and especially if 

 taken later, up to the time that the first berries ripen, the rooting of cuttings is 

 sufficiently hastened by root-inducing substances to warrant their use. Indole- 

 butyric acid, applied b\' solution-immersion or powder-dip, is effective with 

 cuttings taken early, less so or not at all with those taken later. Indolepropionic 

 acid, used only in the last experiment, is certainly to be preferred for cuttings 

 taken relatively late. 



Literature Cited 



1. Bailey, John S., Franklin, Henry J., artd Kelley, Joseph L. Blueberry culture 

 in Massachusetts. Mass. Agr. Expt. Sta. Bui. 358, 20 pp. 1941. 



2. Chandler, F. B., and Mason, I. C. The effect of growth substances on the 

 rooting of blueberry cuttings. Science 92:2375:35. 1940. 



3. Doran, William L. The propagation of some trees and shrubs by cuttings. 

 .Mass. Agr. Expt. Sta. Bui. 382, 56 pp. 1941. 



4. Hitchcock, A. E., and Zimmerman, P. W. Comparative activity of root- 

 inducing substances and methods for treating cuttings. Boyce Thompson 

 Inst. Contrib. 10:461-480. 1939. 



5. Johnston, Stanley. The influence of certain hormone-like substances on the 

 rooting of hardwood blueberry cuttings. Mich. Agr. Expt. Sta. Quart. Bui. 

 21:4:255-258. May 1939. 



6. O'Rourke, F. L. The effect of indolebutyric acid in talc on rooting of 

 softwood cuttings of blueberries. Amer. Soc. Hort. Sci. Proc. 42:369-370. 

 1943. 



3M-2-44. 



