92 



Bulletin 243. 



rows varied in length between 60 and 70 feet. They were 27 inches apart. 

 The plats were a little over one-hundredth of an acre in area. 



The original plan comprised ten sections, the first, fourth, seventh 

 and tenth being mangels which were used as a check, the remainder being 

 devoted to other roots. The roots under trial were mangels, half-sugar 

 mangels, rutabagas, carrots, parsnips, cabbages, hybrid turnips, common 

 turnips and kohlrabi. 



A rectangular piece of land being chosen, it was divided lengthwise 

 and half of it was sown early in May, the remainder being sown the mid- 

 dle of June, with the object to ascertain the influence of early and late 

 sowing. On the " no rotation early sown " area the mangels were at- 

 tacked by leaf-spot while young, with disastrous effect, see pp. 56, 58. 

 The elevation is 836 feet above sea level. In 1904, there were 71 clear 

 days, 115 partly cloudy and 180 cloudy days. It rained on 166 days. 

 The total rainfall was 30.04 inches. This is 4.33 inches below normal. 

 The total snowfall (unmelted) was 75.8 inches. The prevailing direction 

 of the wind was northwest. The winter of 1903-4 was unusually severe, 

 and the spring was late. At Ithaca the ground was frozen to a depth of 



five feet or more ; this, 

 with a deficiency in tem- 

 perature from January ist 

 to April 30th, rendered 

 spring work late. The 

 temperature during May 

 was above normal, but 

 during every other month 

 it was below normal, the 

 annual deficiency being 29° 

 F. A killing frost occurred 

 as late as INIay 12 and 

 corn was injured by a 

 frost on September 22-23. 

 The land was man- 

 ured at the rate of about 

 10 tons per acre, and 

 jilowed about eight inches 

 deep as early as possible 

 in the spring. The land 

 was harrowed four times, 



Fig. 21.— Yellow Globe mangel. Typkal^of this as SOOn as plowed, with 



shape. Like the preceding it yieldslloxv,\biUlis ^|^g sprino"-tooth harrow. 

 well adapted to shallow soils. Upper row early /' ^ 



sown; lower row late sown. Squares six inches. As it had been well tilled 



