90 Nebraska Agricultural Exp. Station, Research Bui. 13 
Table 47 — Extent to ivhich experiment station bulletins 
report the methods of investigation 
Per cent bulletins* reporting method 
details for 
Variety 
Fertilizer 
Cultural 
Pot 
tests 
tests 
tests 
tests 
Per cent 
Per cent 
Per cent 
Per cent 
Years' duration of tests 
71 
25 
3 
55 
Size of plats 
29 
21 
2 
Shape of plats 
23 
8 
1 
Number of duplicates averaged . . . 
13 
3 
1 
25 
Distribution of duplicates 
8 
3 
10 
Use of check plats 
8 
11 
1 
20 
Number of check plats 
5 
14 
1 
20 
Distribution of check plats 
3 
5 
5 
Uniformity of conditions 
41 , 
21 
2 
40 
Size of pots 
55 
Capacity of pots 
45 
Maturity of crop in pots 
1 ! 
45 
*The total number of bulletins reviewed were: variety tests, 253; fer- 
tilizer tests, 146; cultural tests, 52; pot tests, 20. 
