22 N. H. AGR. EXPERIMENT STATION. [Bulletin 163 



The Japanese variety Wickson which, where it can be grown is a fine market 

 plum, with us has not proved sufficiently hardy; both its wood and fruit buds 

 have winter killed. We would suggest that it be tried out in locations with 

 more altitude and better air drainage, such as would be recommended for 

 peaches. 



It has been demonstrated that the variety Burbank is self-sterile, and that 

 it is necessary to have some other free flowering variety, such as Red June, 

 Chabot or Abundance, close to it in order that a first-class crop maybe produced. 



Variety Test of Small Fruits. 



A number of varieties of currants, gooseberries, blackberries and raspberries 

 have been set for determining the hardiness, prolificacy, and general market 

 qualities of the varieties for the State. They have not come into bearing and 

 consequently there is no report at this time. 



Plant Breeding. 



Work on the lines of carnation breeding have been suspended during the 

 lasi two years; the writer has, however, been careful to propagate by cuttings 

 the various hybrid carnations as mentioned in report of 1910. So the work 

 may be continued and completed in 1912-13. 



Tomato Culture Under Glass. 



This work has been continued for the last two years with a view to ascer- 

 taining the most satisfactory and profitable varieties to raise under glass in 

 New Hampshire. Varieties: Comet, Sutton A-l, the Rochford and Sutton 

 Winter Beauty were the varieties grown the last season and seeds procured for 

 further investigations for season 1913. 



EXPERIMENTS UNDER ADAMS FUND. 



Fruit Bud Formation Project. 



The work under this project has been continued as reported in the last 

 biennial report and a bulletin, No. 153, has been published in the meantime 

 by Prof. B. S. Pickett. The same plan of the experiment continues, consisting 

 in the comparison of various cultivation and fertilizer treatments in an orchard 

 consisting of approximately 300 trees. 



No results of marked value were reported previous to 1910, but since that 

 time very marked differences have appeared in the various plots, amongst the 

 most striking of which are the following: 



The rate of wood growth in plots cultivated every other year was approxi- 

 mately double that of plots not cultivated, and in plots which were cultivated 

 every year the rate of wood growth was about double that of plots cultivated 

 every other year. The growing season has varied this to some extent. No 

 marked difference was shown in rate of wood growth between plots cultivated 

 but not fertilized, and plots which were both cultivated and fertilized. The 

 total crop from this orchard for the season 1912 will be approximately 550 



