2 BULLETIN 1014, TJ. 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, inclusive. 



Series I.— 1883 to 1889, inclusive. 



Series II.— 1908 to 1913, inclusive. 



Date of seeding. 



Growth 



to 

 maturity. 



Yield 

 per 



Date of seeding. 



Yield 

 per 

 acre. 



Apr. 26 to 28. 

 May 2 to 6. . . 

 May 13 to 16. 

 May 22 to 26. 

 June 2 to 5. .. 

 June 14 



Days. 

 a 126 

 a 121 

 »118 

 cll9 

 "115 

 <U16 



Bushels. 



. «62.4 

 a 61.1 

 6 70.9 

 "62.4 

 a 53.0 

 <*51.5 



Apr. 24 to 29. 

 May 4 to 10.. 

 May 14 to 17. 

 May 25 to 28. 

 June 2 to 6. .. 



Bushels. 

 63.9 

 68.5 

 67.4 

 54.9 

 44.3 



a Average of the records for five years. 

 6 Average of the records for four years. 



c Average of the records for three 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 2 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 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 



