2 BULLETIN 1014, U. S. DEPARTMENT OF AGRICULTURE. 
In two series of experiments conducted by the Ohio Agricultural 
Experiment Station from 1883 to 1889, inclusive, and from 1908 to 
1913, inclusive, the average yields from the different dates of seeding — 
were as shown in Table 1. From 1885 to 1889 dates of ripening 
were recorded. The number of days to maturity is obtained from 
the recorded dates of seeding and ripening. 
TaBLE 1.—Results of the date-of-seeding experiments with corn at the Ohio Agricultural 
Experiment Station in the 7-year period from 1883 to 1889, inclusive, and in the 
6-year period from 1908 to 1913, vnclusive. 
Series I.—1883 to 1889, inclusive. Series II.—1908 to 1913, inclusive. 
Growth Yield Yield 
Date of seeding. to per Date of seeding. per 
maturity.| acre. 2 wope acre. 
Days. | Bushels Bushels 
SAPEL26 0 2852.5- scsi ase | a 126 @O2,4c| CADES24 CO.29 52 sec cB ace eee eee 63.9 
MAY 2b Ol0-2 Seo cee eee a 121 Gola SMay-4 tol Oe sae see ee eee 68. 5 
May TSiCOMG Sa See eee eee | b 118 DYOSGR May V4stonld ae nee eee rene 67.4 
Mave22it0w6 2s ne oer ea eee eee e119 @62.:49| Miaye2 51602025 =). se eae ee 54.9 
JUNC tO) oe ee eee | e115 Gi535 Omen) 21COlO eee ea eee 44.3 
(iat Ria ee ane ee esa. | d 116 d 51.5 ies ; 
4 
a Average of the records for five years. c Average of the records for three years. 
b Average of the records for four years. d Average of the records for two years. 
In experiments reported by the Indiana Agricultural Experiment 
Station for the years 1892, 1893, and 1894, the number of days 
from seeding to maturity decreased as the date of seeding was ad- 
vanced at intervals of 10 days from May 6 to June 15. The averages 
of the results for the three years show that corn when sown on May 6 
required 125 days from seeding to maturity; when sown on May 16, 
120 days; and when sown May 24 to 26, 114 days. When sown 
June 4 and 5 it required 111 days, and when sown June 14 and 15 
only 104 days. The average yields from experiments conducted 
during seven years (1888-1896)! were 46.7 bushels per acre? when 
sown May 1, 42 bushels when sown May 8 to 11, 39.5 bushels when 
sown May 15 and 16, 41.3 bushels when sown May 5 21 to 22, and 
38.6 bushels when sown May 28 to 30. 
The Illinois Agricultural Experiment Station during 1891, 1892, and 
1893 conducted experiments in which seedings were made at weekly 
intervals from April 25 to June 3. The average results from the 
experiments during these three years showed that corn sown April 
25 and 26 required 136 days from seeding to mature; May 2 to 7, 
131 days; May 13 to 16, 131 days; May 20.to 27, 122 days; and June 
1 to 3, 118 days. The maximum height of stalks was attained in 
the seedings made from May 10 to June 1. In experiments covering 
eight years (1888 to 1895) the maximum yields were obtained from 
the seedings of May 4 to 18. Seedings made in April and those 
made later than May 18 produced smaller average yields. © 
$$ 
1 No yields were reported for 1891 and 1895. 2 Average of six years 
