Ξ TILLAGE. rar 
occur they should be eradicated. For five 
years Prof. G. E. Morrow conducted a series of 
experiments at the Illinois experiment station 
upon the influence of frequency of cultivation 
upon the corn crop. The average results for . 
the five years ending 1593 are as follows:* 
Kind of cultivation. Yield in bushels. 
Not cultivated; scraped with hoe (two plats)....68.3 
Shallow, ordinarily frequent...................+- 70.3 
Deep, ordinarily frequent ..............-..--+--- 66.7 
Shallow etreqMen tess fois cians t'os).- See es 12.8 
Deep, Trequeninsn.. τ cose ra ct ae eles ee 64.5 
The general results thus favor frequent shal- 
low cultivation, though the increased yield will 
warrant the employment of but little extra 
time over that of ordinary frequency. 
At Purdue University we ordinarily plan for 
at least five cultivations during the season. 
At the Kansas experiment station quite a 
number of plats of corn have been submitted 
to frequent cultivation tests. The average re- 
sults of three years’ trials, as given by Prof. C. 
©, Georgeson, are as follows.+ 
Times cultivated during season. | 1. ES 
Times cultivated. Yield in 
1891. 1892. | 1893, | bushels. 
Twice a week ...... 9 11 14 | 40.3 
Once a week ....... 6 6 ἦι 41.3 
Once in two weeks. 4 3 | 4 40.9 
* Bulletin No. 31, March, 1894, Illinois agricultural experi- 
ment station, p. 355. 
+ Bulletin 45, December, 1893, Kansas agricultural experi- 
ment station, p. 131. 
