Nov., 1910.] ANNUAL REPORTS. 21 



V. PUBLICATIONS. 



The publications issued by the department in bulletin or circular during the 

 past two years are as follows: 



Soil Studies, Bulletin, school series, May, 1908. 



- < d Testing, Bulletin, school series, January, 1909. 



Variety Tests of Oats, Bulletin. Number 145, regular series, December, 1909. 



Alfalfa in New Hampshire, Circular No. 9, June, 1910. 



Breeding and Selection of Corn, Circular No. 10, October, 1910. 



Results of Seed Tests, Bulletin No. 14S, regular series, September, 1910. 



The last named publication gives the results of 238 seed examinations made 

 during the year under the provisions of the new state Pure Seed Law. The 

 agronomist of the station has been appointed the agent of the secretary of the 

 State Board of Agriculture, who has charge of the administration of the law, 

 and has been instructed to make the official tests and publish the results annu- 

 ally as a regular bulletin of the Experiment Station. 



REPORT OF THE DEPARTMENT OF BOTANY. 



CHARLES BROOKS. 



The work of the department has continued as outlined in earlier reports. 

 Most of the time of its staff has been given to the study of plant disea- 

 Investigatious have been made to determine the nature of these diseases and 

 experiments carried on to find methods of control. 



The department has recently been given charge of one wing of the college 

 greenhouse and is now able to carry on investigations to much better advan- 

 tage than formerly. 



Fungicides and Spraying. 



The interest in spraying has increased enormously in New Hampshire 

 within the past few years and there has been an urgent demand for fuller 

 information in regard to safeness and efficiency of fungicides. Bordeaux 

 mixture has proven very efficient in controlling diseases, but has often pro- 

 duced serious injury on foliage and fruit. It would mean a great saving to 

 the people of the state if the various fungicides could be tested under New- 

 Hampshire conditions and accurate data obtained as to their value. Informa- 

 tion of this sort when brought within reach of those interested, should prevent 

 much of the loss in the state resulting from the use of inefficient and uns 

 materials. The department has been endeavoring to obtain such information. 

 In the summer of 1909 spraying experiments were made on the control of 

 scab and leaf spot in two Mcintosh orchards in Deerfield, N. II. The past 

 summer similar experiments have been conducted in the Baldwin orchards of 

 A. K. Marsh and George E. Gowen of Stratham, N. H. The self-boiled, 

 commercial and home-made lime-sulfurs have been tested alone and combined 

 with various insecticides. They have given practically no injury under con- 

 ditions that resulted in serious damage from Bordeaux. In 1908 and 1909 they 

 held the diseases in check as well as Bordeaux, but the work of the past season 



