76 The Bulletin 



acre eacli, the size being 108.9 feet by 20 feet, with space between plats 

 for two extra rows, the rows nearest the plats having four-foot space at 

 the ends of the plats. There are two series of sixteen plats each in this 

 field, Avith driveway or turn row between. 



In the case of all plats on this farm there is a four-foot extra space 

 at the ends. 



Field A. — These plats were used for fertilizer experiments with cot- 

 ton in ] 903-4-6-9; for fertilizer experiments with corn in 1905-7; for 

 general crop of oats without fertilizer in the fall and spring of 1908; 

 and for fertilizer experiments with peas in the summer of 1908. In 

 case of each of the three crops the same plan or system of fertilization 

 was followed. 



Field B. — These plats were used for fertilizer experiments with corn 

 in 1903, 1904, 1906, and 1908 ; for fertilizer experiments with cotton 

 in 1905 and 1907 ; for a general crop of oats without fertilizer in the fall 

 and spring of 1909, and for fertilizer experiments with peas in the sum- 

 mer of 1909. 



Field C. — These plats were used for fertilizer exj^eriments with peas 

 in 1904, 1905, 1906, and 1907, a grain crop without fertilization pre- 

 ceding the pea crop in each year except 1904; for fertilizer experiments 

 with cotton in 1908; and for fertilizer experiments with corn in 1909. 



No catch crops for the improvement of the soil were grown on these 

 fields during the year 1903-09, but since that time rotations have been 

 arranged for each field in which they have found a place at frequent 

 intervals. 



The results of seven years' experiments with cotton, are contained in 

 Table VIII. 



