28 



N. H. AGR. EXPERIMENT STATION. 



[Bulletin 151 



could be made for the commencement of this work, 

 great value to the fruit industry of the state. 



Such a test would be of 



EXPERIMENTS UNDER ADAMS FUND. 

 Fruit Bud Formation Project. 



All the work arranged for under this project has been carried out exactly 

 as outlined throughout the entire season and the results have been striking 

 and thoroughly satisfactory. The general plan of this experiment consists 

 in the comparison of various cultivation and fertilizer treatments, in an apple 

 orchard consisting of some three hundred trees. The experiment has now 

 been in progress for three seasons. No results of marked value could be 

 observed previous to 1910, but during the present season, very marked differ- 

 ences have appeared in the various plots, among 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 double that of plots cultivated every 

 other year. No marked difference was shown in rate of wood growth between 

 plots cultivated, but unfertilized, and plots which were both cultivated and ferti- 

 lized. At the date of writing the records on the crop have not been completed. 

 A careful estimation of the amount of blossoms made by three separate exami- 

 nations of the individual trees throughout the orchard (a better index probably 

 than a record of the number of fruits produced so far as a study of fruit bud 

 formation is concerned) indicated the relative number of fruit buds formed 

 in the various plots. The differences were as follows: 



Plot 



Fertilizer 



Cover Crop 



Culture 



Per cent of 

 full liloom 



I 



II 



III 



IV 



V 



VI 



VII 



VIII 



IX 



X 



XI 



XI'o 



XP 



XI" 



XP 



None. 

 None. 

 None. 

 None. 



None In sod. 



None. . . _ Culture odd years. . . 



In sod even years 

 None Alternate with II. . . 



None Culture till Sept. 15. 



None Crimson clover July 10. . 



Normal amounts N. K. P Crimson clover July 10. . 



Normal amounts N. K. P Crimson clover July 10. . 



Excess P Crimson clover July 10. . 



Excess N Crimson clover July 10. . 



Excess K Crimson clover July 10. . 



Lime cross plot Crimson clover July 10. . 



Excess K and Lime Crimson clover July 10. . . Culture till July 10 



Excess N and Lime Crimson clover July 10. . . Culture till July 10 



Excess P and Lime Crimson Hover July 10. . . Culture till July 10 



Normal and Lime Crimson clover July 10. . . Culture till July 10 



Culture till July 10. . 

 Culture till July 10. 

 Culture till July 10. . 

 Culture till July 10 

 Culture till July 10 

 Culture till July 10 

 Culture till July 10 



9.1 



38.6 



57.0 



42.7 



59.1 



43.1 



53.4 



39.1 



44.5 



62.7 



57.6 



77.6 



52.25 



39.0 



56.8 



