EXPERIMENT STATION BUL/LETINS. 



549 



produced in 1919, a favorable year, by each variety, together with notes 

 on maturity. In 1917, a very unfavorable year, few soy beans matured 

 in this state. 



SOY BEAN VARIETY TEST— 1919. 



Planted June 8th, harvested September 4th. 



Results corrected according to checks in pounds per acre on 12% moisture basis. 



Variety. 



Manchu 



Ito San 



Early Brov.'n 



Black Eyebrow 



Medium" Green 



Mongol 



Virginia 



Wilson 5 



Ilollybrook 



Wisconsin Black 



Wilson 



Michigan Favorite Cow Pea 



Ogemaw 



Mammoth Yellow 



Pounds per acre. 

 Air Dry Ilay. 



5107 

 4931 

 4760 

 4688 

 4370 



4351 

 4212 

 4193 

 4065 

 3698 



3475 

 2108 

 1561 

 1270 



Maturity. 



Pods forming. 

 Seeds well formed. 

 Seeds well formed. 

 Seeds well formed. 

 Seeds just forming. 



Seed just forming. 

 Pods just forming. 

 Pods just forming. 

 Pods forming. 

 Seed nearly mature. 



Just past bloom. 

 No pods. 

 Mature. 

 No pods. 



During the past season (1919) five variety tests* were conducted in 

 four different counties. The results of these tests correspond very 

 closely with results at the Station. In each test one of the following 

 varieties : the Ito San, Black Eyebrow, or Early Brown, ranked first. 

 The Manchu was not included. In each test the Mammoth Yellow ranked 

 last. The following table gives the yields in tons i)er acre of air-dry 

 hay produced by each variety : 



ADAPTATION. 



Soy beans will grow on all types of well-drained soils of sufficiently 

 long season such as are adapted to the production of corn for grain. 

 They do best on soil well supplied with lime, but will make considerable 

 growth on soils that are somewhat acid which makes them adapted to 

 sandy soils. In case the soil is very acid a large growth should not be 

 expected. Soy beans frequently make considerable growth on light, 

 sandy soils that are so deficient in organic matter that alfalfa and red 

 or June clover do not catch. 



♦Sectional variety teste conducted by Prof. J. F. Cox, E. K. Chamberlin, and C. R. Megee. 



