cuttings were given the same kind of sawdust packed treatment that had 

 resulted in some survival. 



The same technique did not result in equal success in securing survival 

 in later seasons, however. Also there has been further mortality in those 

 plants surviving the first winter in the field. Of those kept over winter from 

 the seasons of 1957 and 1958. none have survived to date. The reasons for 

 this are somewhat obscure, but it seems evident that the temperature dropped 

 too low in the storage area at some time during these two winters. At 



Table 5. Survival of Cuttings — Sugar Maple in Nursery Row 



as of June 5, 1959 



From 1954 Rooting From 1955 Rooting From 1956 Rooting 

 Tree No. and 1955 Planting and 1956 Planting and 1957 Planting 



No. 3 1 



No. 4 4 



No. 5 



Y.T. (No. 9) 11 



L.D. (No. 8) 14 



Totals 30 3 



Total of all surviving 36 



present the survival score stands as given in Table 5. These are all vigor- 

 ous and growmg well. This is not a very impressive total from the thous- 

 ands of cuttmgs that have been rooted, but it shows that it can be done! 

 At this point, a few comments and suggestions may be in order, to serve 

 as a guide to those who may wish to propagate woody plants by these 

 methods or to improve upon them. One chief problem is the pot-bound 

 condition of the potted cuttings at the time of placing them in the nursery 

 row. it takes a long time for side roots to become established and such 

 plants are not anchored as well as they should be. Another is that they 

 seem to require a winter temperature slightly above 32 °F., but which 

 does not fall below that point. Perhaps the solution to both problems would 

 be to transplant the rooted cuttings directlv to a cutting bed which will later 

 be held in refrigeration at 32° to 34° F. until the end of the winter period. 



Experiments on Cuttings of Hazel-Filbert Hybrids 

 and Young Apple Stock 



To explore the potential applications of the methods found effective in 

 rooting maple to other woody species, tests were made on a limited number 

 of cuttings from apple stock and from hybrids of hazel-filbert. These were 

 taken from young trees at the Horticultural Farm. Experiments were made 

 on the effects of growth regulators with both kinds of cuttings and on the 

 effect of taking cuttings from different positions on the plant (lateral vs 

 terminal) with Mains robusta No. 5 in 1955 and 1956. The cuttings were 



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