NEW HAMPSHIRE. 147 



NEW HAMPSHIRE. 



New Hampshire College Agricultural Experiment Station, Durham. 



Department of New Hampshire College of Agriculture and Mechanic Arts. 



W. D. GiBBS, D. Sc, Acting Director. 



Among the changes during the year at the New Hampshire Station 

 were the resignation of W. H. Pew, as animal husbandman, F. W. 

 Morse, as chemist, and of several assistants. Since the close of the 

 year E. D. Sanderson has resigned as director, taking effect January 

 1, 1910. In April, 1909, C. W. Stone was placed in charge of the col- 

 lege farm and herd previously managed by the agronomist and ani- 

 mal husbandman. A new insectary of original design was constructed 

 for entomological work. This consists of a permanent wooden work 

 room and a rearing room with cement floor and pits, screen sides, and 

 a double canvas roof. This arrangement secures more nearly natural 

 conditions for life history studies than in the usual glass house. The 

 work of the station was along the same lines as indicated in the last 

 report. 



The Adams fund projects were carried forward during the year. 

 The department of chemistry made a study of soil potash and its 

 behavior toward growing crops, which indicated that for heavy clay 

 loams application of potash fertilizers are unnecessary for grass 

 culture. The composition of the crop was not aflfected by the potas- 

 sium supplied. The same facts appeared to hold for the lighter loam 

 soils overlying clay or hardpan. The action of soils, and particularly 

 of clay, on lime and chemical fertilizers appeared to be a reduction 

 of their solubilities. The action of the organic matter toward the 

 soluble mineral salts was found to be like that of clay except in a 

 less degree. 



In the horticultural department the studies of heredity in vegetables, 

 especially squashes and tomatoes, progressed actively in accordance 

 with the outline. The work on the cause and means of control of 

 fruit bud formation on the apple was carried on S3'stematically in an 

 orchard of 8^ acres. So far the work has been preparatory and in- 

 cludes the effects of different kinds of culture and cover crops and 

 the use of fertilizers in different combinations. 



The entomologist continued his investigations upon the relation 

 of temperature to the transformations and mortalit}" of insects. The 

 project on the codling moth was completed and the published report* 

 gives for the first time a detailed account of the life history of the 

 pest in New England and establishes definitely such vital points as 

 the place of oviposition and the time of hatching eggs. 



"New Hampshire Sta. Rpts. 1907-8. 



