1916.1 PUBLIC DOCUMENT — No. 31. 23a 



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THE CRANBERRY SUBSTATION, WAREHAM. 



The general lines of work in the cranberry substation during 

 the past year have been similar to those previously in progress. 

 Experiments with different fertilizer materials and different fer- 

 tilizer combinations, the study of the life histories and habits of 

 insects and their relations to the crop, and methods of destroy- 

 ing those that are injurious, experiments in co-operation with 

 the United States Department of Agriculture in methods of 

 treatment for the prevention of disease, methods of frost pro- 

 tection, weather observations and frost warnings, a study of 

 methods of preparing the crop for market, and storage experi- 

 ments have been the main lines of work. Particular emphasis 

 has been placed this year on a study of the conditions and 

 methods of handling and storage as affecting keeping quality. 

 Results which seem likely to prove of great value have been 

 obtained, but it has been impossible to complete this work in 

 season for the inclusion of the usual bulletin giving the results 

 of the cranberry investigations in this report. The bulletin 

 covering the operations of the year 1915 will be included in the 

 report published in January, 1917. The bulletin as a separate, 

 however, will be distributed as soon as it can be published. 



The cranberry crop on the station bog in 1915 was seriously 

 reduced by the ravages of the tip worm. The fruit, however, 

 was of good quality, the fruit worm did relatively little injury, 

 and the prices realized for the fruit were quite satisfactory. The 

 following tables show in detail both expenditures and returns. 

 The salary of Dr. Franklin is not included in the tables of ex- 

 penditures. These are divided in such a manner as to show 

 ordinary expenditures which would be involved in the manage- 

 ment of a cranberry bog on a commercial basis, and the ex- 

 penditures for the experimental work. 



