1922.] PUBLIC DOCUMENT — No. 31. 15a 



Tlie whole orchard was plowed and harrowed repeatedly last 

 spring in preparation for starting the experiment, which 

 probably accounts for the fact that while fertilizers had a 

 definite effect on the cover crop, none could be observed on 

 the trees themselves. 



Project 8. "Test of cover crops for apple orchards." 



Professor Shaw and Mr. French. 



The crops used have been red clover, buckwheat, timothy, 

 redtop, weeds, and rape, although the latter crop made but a 

 poor stand. Individual tree records are being taken. No 

 report on this project has as yet been made, and probably none 

 €an be made in the near future. 



Project 15. "Orchard fertilization." 



Professor Shaw and Assistant Professor Gaskill. 



This orchard was assigned to the Department of Pomology in 

 the spring of 1921. Previously it has been carried on as an 

 agricultural project, with reports made at more or less frequent 

 intervals in the annual reports of the Experiment Station, the 

 last of these reports being in 1914. All records of this orchard 

 have been summarized, and are now nearly ready for publica- 

 tion. The plan of fertilization was changed this last spring 

 to one supplying approximately equal amounts of nitrogen 

 and phosphoric acid to all the fertilized plots, but carrying on 

 the differential potash treatment as formerly. 



Project 16. "Test of different amounts of nitrate of soda." 

 Professor Shaw and Assistant Professor Drain. 



This investigation was started in the spring of 1921, utilizing 

 certain areas in the College orchard. Nitrate of soda is applied 

 at the rate of 5, 10 and 15 pounds per tree. Since the effect 

 of the nitrate on fruit production is secured in part through its 

 effect on wood production, it will be several years before the 

 results will be worthv of record. 



