54 Experiment Station Bulletin 345 



Also in 1940, visits were made to a number of localities in the state 

 where Calasoma sycophanta, an important predator of the gypsy moth, 

 had been reported in numbers. Observations indicated that this insect 

 was building up in abundance throughout most of the area generally in- 

 fested by the gypsy moth. 



In the fall of 1940 the department cooperated with the Federal 

 Bureau of Entomology and Plant Quarantine in scouting several counties 

 to determine the extent of European corn borer infestation. The results 

 of this survey indicated a decrease in infestation in Hillsboro, Strafford, 

 Merrimack, and Rockingham counties. At the same time, there was a 

 definite trend toward increase in Sullivan and Grafton counties. In gen- 

 eral, the borer was less abundant in 1940 than in the previous year, with 

 an average of 51.4 borers per 100 plants in 1939 and 34 per 100 plants in 

 1940. 



Because apple maggot infestations fluctuate with succeeding years 

 this project has been inactive during the period of this report, but the 

 department is continually on the alert for any evidence of new develop- 

 ments. (W. C. O'Kane, J. C. Conklin) 



NUTRITION — VITAMINS — METABOLISM 



Because of the Lend-Lease Act and other events incident to and 

 preceding our country's declaration of war, a national emergency in 

 human nutrition became evident in the latter part of the year 1941. 

 Nation-wide sectional meetings of the Agricultural Experiment Station 

 representatives were arranged to provide an opportunity to discuss and 

 consider plans for participation in a comprehensive study. 



The northeastern sectional conference was held in New York City 

 on January 2 and 3, 1942. Within a month members of our home econo- 

 mics and agricultural and biological chemistry departments had organized 

 and sufficiently developed an outline dealing with factors of nutrition 

 related to New Hampshire grown fruits and vegetables to receive au- 

 thorization from Washington to pursue the plans with federal funds. 



Factors Affecting Nutritive Value of 



New Hampshire Grown Fruits and Vegetables 



Under the above title definite investigations have been started parti- 

 cularly in relation to blueberries and squash. Both are well known and 

 important food products grown in New Hampshire about which little 

 information is available concerning their contribution to the newer phases 

 of human nutrition. Preliminary analyses of the ascorbic acid and caro- 

 tene content of these and some other fruits and vegetables are now in 

 process of analysis. (Wil.ma D. Brewer, S. R. Shimer, H. A. Davis, 

 T. Levcowich) 



Adequacy of Diets of New Hampshire Families 



Approximately six hundred completed dietary survey questionnaires 

 have been obtained. These were prepared to investigate the nutritional 

 status and food habits of New Hampshire families during the late winter 

 and early spring months, and also to study the possible relationships be- 



