Missouri Corn Growers'' Association. 



349 



At the Illinois Station several years ago plots were culti- 

 vated from three to five times during the season in comparison 

 with plots cultivated about three times as much. The average 

 results for five years were as follows: 



FREQUENCY OF CULTIVATION FOR CORN. 

 ILLINOIS EXPERIMENT STATION. (1) 

 (Average 5 years.) 



Amount and kind of cultivation. 



Yield in bushels 

 per acre. 



Shallow, ordinary 



Deep, ordinary 



Shallow, frequent 



Deep, frequent 



Average, frequent 

 Average, ordinary 



70.3 

 66.7 

 72.8 

 64.5 



68.6 



68.5 



Similar experiments have been conducted at the New Hamp- 

 shire Station with the following results: 



Shallow cultivation 14 times, 80.6 bushels; shallow culti- 

 vation 5 times, 79.1 bushels. 



At the Kansas Station corn was cultivated from three to 

 seventeen times during the season for two years. The results 

 are presented in the following table: 



FREQUENCY OF CULTIVATION FOR CORN. 



KANSAS EXPERIMENT STATION. (2) 



(Average 2 years.) 



Cultivation. 



Yield in bushels 

 per acre. 



Once in 4 weelts (2 cultivations) . . . . 

 Once in 3 weeks, (3 cultivations) . . . . 

 Once in 2 weeks (4 cultivations) . . . . 



Once a week (7 cultivations) 



Twice a week (13 cultivations) 



Three times a week (17 cultivations) 



16.9 

 24.0 

 25.2 



27.8 

 27.2 

 24.8 



We may, therefore, conclude that while the plants are small 

 and the field comparatively fallow, cultivation conserves mois- 

 ture as in any fallow soil. After the plants are large enough to 

 shade the ground considerably and to protect it from winds 



(1) Illinois Experiment Station, Bulletin 131, 1894. 



(2) Kansas E.xperiment Station, Bulletin 45, 1893. 



