19181 FIELD CROPS. 235 



Results secured in cooperative variety tests of oats grown on clay and sandy 



Varieties. 



Weight 



per 



tonde 



(4 



bushels). 



Clay soil: 



Sejr 



Schlanstcdt 



Stjerne 



Gul Naisgaard... 



Gulhvid Tystofte 



Ligowo 



Sandy soil: 



Graa 



Stjerne 



Guldregns 



Gul Nsesgaard 



Schlaustedt 



Sejr 



Gulhvid Tystolte 



Jiigovro 



Lbs. 



144 



138 

 137 

 140 

 140 

 143 



109 

 126 

 135 

 124 

 125 

 131 

 127 

 132 



The chemical composition of the different varieties is also given. 



Harvesting, picking, thrashing-, and storing peanuts, H. C. Thompson 

 {U. S. Dept. Agr., Office Sec. Circ. 81 {1917), pp. 6, figs, .i).— Methods which 

 have proved successful are presented for harvesting, picking, and thrashing 

 peanuts and for storing the product on the farm or in warehouses. 



The potato, A. W. Gilbert, M. F. Babes, and D. Dean {New York: The Mac- 

 millan Co., 1911, pp. XII +318, pis. 16, figs. 29).— A. book intended to give brief 

 practical suggestions on the growing, breeding, and marketing of potatoes for 

 both the farmer and the student. The chapters relating to breeding and varie- 

 ties occupy a large proportion of the book, as these subjects are regarded as 

 having received less attention in potato literature than cultural methods. 



The application of correlation formulas to the problem of varietal differ- 

 ences in disease resistance. — Data from the Vermont experiments with po- 

 tatoes, J. A. Harris {Amer. Nat., 51 {1917), No. 604, PP- 23S-2U)-—A. number 

 of constants showing the relative correlation of disease resistance in potatoes 

 to variety are reported. These figures were obtained by the author in con- 

 nection with other studies involving a review of numerous experiments con- 

 ducted by the Vermont Experiment Station in comparing varieties for suscepti- 

 bility to early blight (Alternaria solani) (E. S. R., 31. p. 64.S), tuber rot (E. S. 

 R., 17, p. 1078), and Phytophthora infestans (E. S. R., 29, p. 550). 



The author maintains that the correlation coellicients presented justify much 

 more definite conclusions than were drawn without such statistical analysis 

 and, hence, demonstrate the usefulness of the biometric method in the pre- 

 liminary s.tages of disease-resistance experiments, in which large numbers of 

 varieties are being tested, and in which the mass of data is confusing. He 

 concludes that the most careful individual analysis is not only desirable but 

 e.ssential, and that the statistical method should be supplemental. 



Cooperative potato spraying, 1916, G. P. Clinton and F. E. Rogers {Con- 

 nectictit State Stn. Rpt. 1916, pt. 5, pp. 355-364)- — Spraying experiments con- 

 ducted by the station and the New Haven County Farm Bureau in cooperation 

 with farmers within the county to test the relative value of Bordeaux mixture 

 and Pyrox in spraying Green Mountain potatoes for blight are reported. The 

 estimated cost, yields, and gain or loss per acre for each treatment are shown 

 in tabular form, and the conclusion is reached that homemade Bordeaux 



