g6 Bulletin 243. 



area were affected by leaf spot (Cercospora beticola). This part is desig- 

 nated " no rotation plat." A piece of land adjoining had not grown 

 sugar-beets previously but was sown this year and is designated " rotation 

 plat." 



The soil is a rich loam and had been well fitted. It was replowed 

 and fertilized at the rate of 1,000 pounds per acre of a mixture contain- 

 ing four per cent, nitrogen, five per cent, phosphoric acid, and ten per 

 cent, potash. The nitrogen was obtained from nitrate of soda and partly 

 from high-grade dried blood, the phosphoric acid from acid phosphate 

 12 to 14 per cent, available and the potash from muriate of potash. In 

 addition, air-slaked lime was applied at the rate of 1,500 pounds per acre. 

 The fertilizers and lime were well harrowed in. The seed-bed was in 

 excellent tilth. 



The variety of sugar-beet was Kleinwanzlebener, seed grown by 

 E. H. Morrison, Fairfield, Washington, and sent out by Department of 

 Agriculture. 



The seed was sown at a depth of one-half to three-fourths inches and 

 at the rate of 12 pounds per acre. The plants were thinned to between 

 six and eight inches asunder and the rows were 27 inches apart. 



Harvesting of sugar-beets was begun September 13, 1904, and con- 

 tinued weekly until November i, 1904. All analyses of sugar-beets in 

 1904 were made by the United States Department of .Agriculture, Division 

 of Chemistry. All calculations are based on 50 feet of row. 



In the tables that follow the results are given in condensed form for 

 both the early and the late sown crops. In spite of the fact that many 

 of the plats of the early-sown mangels were on " no rotation " area and 

 were badly attacked by leaf-spot and the yield correspondingly reduced, 

 the results are strongly in favor of early sowing. The actual percentage 

 gain in dry matter was 60 per cent. 



