EXPERIMENT STATION REPORTS. 293 



DATE OF SEEDING ROSEN RYE. 



This test includes plantings beginning September 16, 1918, continuing 

 at five day intervals until November 21st. Spring plantings have also 

 been made on April 9, April 22, and May 13. The results have not been 

 calculated, but the indications are that seedings made previous to October 

 15, gave much greater yields. Seedings made in late October and November 

 gave comparatively light yields and the spring seedings failed to give a 

 crop. 



EARLY AMBER PLANT-ROWS. 



Variety tests indicate that the Early Amber is best suited for Michigan. 

 Plant selections were made of this variety in an endeavor to find better 

 strains of sweet sorghums to increase. 



SUNFLOWER PLANT-ROWS. 



Sunflowers are attracting considerable interest for ensilage purposes, 

 and during the war period was looked to as a possible source of oil suited 

 for paint purposes. 



The variety series of 1918 showed that all varieties tested were mixtures 

 and most of them susceptible to rust. Selections were made that were 

 somewhat resistant to rust for use in the plant-row series of 1919. 



ANNUAL SWEET CLOVER. 



An annual form of sweet clover, originated in the breeding work at 

 the Iowa Experiment Station, is being increased. 



TIMOTHY TESTS. 



The lots of timothy seed originating from the selfing of four superior 

 strains, produced from the breeding work of past years, were placed in 

 a yield test last fall. The checks and edges are commercial seed. 



TIMOTHY SELFING. 



The four plants that proved to be the highest producers in the clonal 

 series were divided and transplanted into separate patches in 1917. These 

 were surrounded by rye in 1918 and again in 1919 to protect the strains 

 from crossing. 



VETCHES. 



Selection work is being tried with spring vetch that came from Svaloef, 

 Sweden. 



WHEAT YIELDS. 



There are forty-four plats in the 1919 wheat variety series. The varieties 

 are mainly the new strains produced by the breeding work of previous 

 years, including several other varieties. The series to be planted this fall 

 will be considerably larger. 



