p. T. Blood, a long-time associate 

 of Prince, and G. P. Percival in Agri- 

 cultural and Biological Chemistry were 

 co-authors with Prince on numerous 

 publications. Blood's specialty, how- 

 ever, was potatoes. For several years 

 he evaluated potato varieties for yield 

 and attributes when processed as po- 

 tato chips. He and L. T. Kardos deter- 

 mined that carbon dioxide, used as a 

 sprout inhibitor during storage, did 

 not affect potato cooking quality, but 

 lengthened the marketing period into 

 May or June. Kardos studied the influ- 

 ence of soil type on release of potassium 

 and on persistence of legume stands, 

 and investigated tillage as a means of 

 developing a deeper and larger root 

 system for legumes to improve their 

 persistence under drought conditions. 

 L. J. Higgins' variety trials of oats and 

 corn indicated to farmers the disease- 

 resistant varieties of oats and were a 

 factor in their changing from pure lines 

 to hybrid varieties of corn for grain 

 and silage. 



Beginning in 1952 and serving for 

 four years, R. L. Donahue was depart- 

 ment head. In 1956 A. B. Prince, who 

 was appointed to the faculty in 1954, 

 became head. 



Animal Husbandry 



As one contribution to the war effort, 

 several scientists in the Agricultural 

 Experiment Station and the Engineer- 

 ing Experiment Station cooperated on 

 a project concerning the utilization of 

 wood waste. In one segment of the 

 project, Ritzman made a preliminary 

 evaluation of wood yeast protein as a 

 feed for livestock since wood yeast is a 

 concentrated source of protein and B 

 vitamins. The material showed prom- 

 ise, but apparently he never deter- 

 mined whether it would efficiently 

 promote growth or milk production. 



A second wartime contribution 



by Ritzman was "Calories in Wartime" 

 (Station Circular No. 62), a summary 

 of suggestions for meeting emergency 

 conditions in feeding livestock, based 

 primarily on research conducted by 

 the Station over a period of 24 years. 

 Professor Ritzman served the Univer- 

 sity from 1915 to 1945. His portrait, 

 painted by J. W. Hatch in 1959, hangs 

 in Ritzman Laboratory. 



Dairy Husbandry 



H. A. Keener came to the university in 

 1941 and until 1945 held a joint ap- 

 pointment in both Animal Husbandry 

 and Dairy Husbandry. In 1945, the 

 Animal Nutrition Laboratory became 

 part of the nutrition research unit of 

 the Dairy Department which now 

 consisted of K. S. Morrow, head, H. C. 

 Moore, Keener and N. F. Colovos. 



In 1944 Keener, G. P. Percival and 

 Morrow reported on a disease condi- 

 tion which had been attacking cattle in 

 several areas of Carroll County for many 

 years. The disease was characterized 

 by depressed appetite, rough hair coat, 

 muscular incoordination, retarded 

 growth and decreased milk flow. The 

 condition was found to be due to a 

 deficiency of cobalt. When fed cobalt 

 sulphate, animals responded quickly. 

 Soon after, they observed the defi- 

 ciency in sheep and goats and again 

 the response to feeding cobalt was 

 spectacular. On recommendation to 

 feed manufacturers that cobalt 

 sulphate (two grams/ton of feed] be 

 added to dairy and livestock rations, 

 the deficiency was virtually eliminated 

 in New Hampshire in a few months. In 

 later research, they determined that 

 the deficiency occurred only in rumi- 

 nants, that apparently cobalt was es- 

 sential for production of some uniden- 

 tified nutritional factor in the rumen, 

 and that cobalt content of forage could 

 be reduced to the deficiency level when 



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