26 N. H. AGR. EXPERIMENT STATION. [Bulletin 151 



importance of this is due to the fact that it shows that potassium can be 

 eliminated from the grass fertilizers for clay soils and without affecting the 

 yields. 



During the past year observations have been made to determine the effects 

 of tillage on the soil potash. The moisture content of the soils on the cultivated 

 and uncultivated plots remained the same throughout the growing season. 

 Also the water soluble material extracted from the soils from the cultivated 

 and uncultivated plots was the same. So far as any observations could be 

 made on the plots in question, the growth of the crop, amount of soil moisture, 

 amount of water soluble soil, organic and inorganic extracts, were independent 

 of the cultivation. This will be continued another season. 



Cooperative experiments as such are not being carried on by the Chemistry 

 Department. On the other hand observations are being made on different 

 soils on farms in different localities. Most of these are made on newly seeded 

 grass fields. Plots in about thirty-five different places are now under obser- 

 vation. 



During the last biennial period the department has cooperated with other 

 stations in working up data for new methods for determining nitrogen and 

 potassium. 



It has been the custom of the department to make the analyses for the 

 feeding stuffs and fertilizer inspection during the summer months and to depend 

 upon student help. The large increase in the amount of this sort of work 

 makes this method no longer satisfactory. In order to do this work justice 

 new arrangements must be made, so that the work may be commenced earlier 

 and the results published at least before the sales of feeding stuffs and fertili- 

 zers begin for the succeeding season. 



REPORT OF THE DEPARTMENT OF 

 HORTICULTURE. 



B. S. PICKETT. 



ORGANIZATION. 



The experimental work of the Department of Horticulture has been carried 

 on during the past two years under the immediate supervision of the head of 

 the department, assisted by men in the several branches of pomology, oleri- 

 culture and floriculture. The following changes have been made in the staff: 



In February, 1910, W. H. Wolff, M. S., Pennsylvania State College, suc- 

 ceeded Mr. W. H. Wicks as assistant in pomology, Mr. Wicks having accepted 

 a position as professor of horticulture in the University of Idaho. 



In July, 1909, T. G. Bunting, B. S. A., Ontario Agricultural College, was 

 appointed assistant in olericulture. After a year of very satisfactory service, 

 Mr. Bunting resigned to accept a position with the Canadian government; 

 and was replaced on September 1, 1910, by J. J. Gardner, B. S., Massachusetts 

 Agricultural College. 



