PROPAGATION OF WHITE PINE 9 



The following treatments, all for 5 hours, were ineffective or injurious: mono- 

 basic potassium phosphate 0.5 or 1.0 percent solution; potassium ferricyanide 0.1, 

 0.5 or 1.0 percent solution; manganous sulfate 0.5 or 1.0 percent solution. 



Table 4. 



-Response of Cuttings from Different Trees to 

 Certain Root-Inducing Treatments.* 



Dates of Taking Cuttings, Tree Xunibers. and Treatments** 



Percentage Rooting 



First 

 Tree 



Second 

 Tree 



Third 

 Tree 



January 6, Trees, 2, 3, 4: 



Check... 9 



IB 200 mg./l., 5 hr ....._ 57 25 



xNA 50 mg./l., 5 hr..... 25 25 



January 12, Trees t, 8, 11: 



Check 13 13 



IB 200 mg./l, 5 hr 13 53 



NA 100 mg./l., 5 hr 19 19 



Hormodin No. 3., 19 22 



IB 200 mg./l., 5 hr., followed by Hormodin No. 3 6 50 



February 2, Trees, 6, 8, 8: 



Check....... 8 



IB 200 mg./l., 5 hr 7 20 



IB 200 mg./l., 5 hr., followed by Hormodin No. 1 20 27 



IB 200 mg./l., 5 hr., followed by Hormodin No. 3...... 60 33 



NA 100 mg./l., 5 hr., followed b>- Hormodin No. 2.... 24 



NA 50 mg. 1., 5 hr., followed b\- Hormodin No. 3 53 



March 2, Trees 10, 11, 12: 



Check 7 



IB 200 mg./l., 5 hr. _ 7 



IB 200 mg./l., 5 hr., followed b\- Hormodin No. 2. 62 



IB 200 mg./l., 5 hr., followed b\- Hormodin No. 3. 53 



March. 6, Trees 8, 11, 13: 



Check 10 



IB 200 mg./l., 5 hr 25 60 



NA 100 mg./l., 5 hr 20 67 



IB 100 mg. and NA 50 mg./l., 5 hr..... 32 15 



Hormodin No. 3.... 34 45 



IB 100 mg. and NA 50 mg./l., 5 hr., followed by 



Fermate-Hormodin No. 2 16 60 



NA 100 mg./l., 5 hr., followed by Fermate- 



Hormodin No. 2 . 16 44 



*Rooting medium was sand on March 6, old sand-sphagnum peat on the other dates. 

 **See Footnote 5, p. 4. 



9 



34 

 25 





 56 

 38 



25 

 50 





 13 



7 



13 

 13 

 20 





 11 

 14 











43 



7 



20 



56 



16 



16 



Rooting Media 



The rooting medium used here was about five inches in depth, usually placed 

 over a la> er of crushed rock in a greenhouse bench for drainage. Mixtures desig- 



