Results to (late show that the timothy-fed animals have a very good 

 record of reproduction performance ; that for the ladino-hrome-fed animals 

 the record is not nearly as good- The significance of this fact is not known. 

 The work on this project was carried out in cooperation with K. C. 

 Beeson and E. j. Thacker of U. S. Plant, Soil, and Nutrition Laboratory, 

 Ithaca. Xcw York. 



H. A. Keener, F. E. Allen*. K. S. Morrow. 

 H. A- Davis, G. P. Percival, C. H. Boyxtox 



OTHER ACTIVE PROJECTS 



Influence of Herd Management on Milk Production 



K. S. Morrow 



Relation of Seminal Fluid Fructose Levels to 

 Factors Affecting Breeding Efficiency 



C. H. BOYXTOX 



Relationship Between the Diet of Dairy Animals, the Digestibility 

 and Utilization of Protein and Energy, the Synthesis of Some of 

 the B Vitamins, and the Activity of the Flora of the Digestive Tract 



N. F. CoLovos 



Entomology 



Control of Apple Insects 



In the control of plum curculio and red-handed leafroller on apple, 

 ^lethoxychlor was inferior to Dieldrin. In codling moth control, Methoxy- 

 chlor was superior to Dieldrin. 



In comparative tests against European red mite on apples, Ovotran, 

 Orthotran. and Genite 883 were superior to Neotran. Aramite emulsion and 

 Genite 883 emulsion failed to give satisfactory control at one pint per 100 

 gallons, but gave good control when used at Ij/j pints per 100 gallons. 



J. G. CoxKLix. R. L. Blickle, W. J. Morse 



Control of Lice and Mites on Poultry 



The northern feather mite was successfully controlled by treating the 

 Ijirds with 10 percent Aramite dust or with 10 percent Xeotran dust. 

 Application was made by means of a bulb-type pufi^ duster. A single treat- 

 ment with Xeotran freed the birds from mites in four days. Aramite- 

 treated birds became free of mites within ten days after application. 



The common poultry mite was controlled with dusts and sprays of 

 Aramite and with sprays of Genite 923. The miticides were applied to the 

 normal hiding places of the mites. 



Poultry lice were controlled with 0.5 percent DDT dust, using dusting 

 boxes, thus allowing the birds to treat themselves. Litter from the poultry 

 house was placed in bushel vegetable boxes to a depth of approximately 

 3 inches and a 3 percent DDT dust added to give a final 0.5 percent DDT 

 mixture. All birds in the experimental pen dusted themselves within three 



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