180 



CORN CROPS 



as on heavy or cold clay soils, there is not sufficient stimu- 

 lus early in the life of the plant to start the tillers. 



RATE OF PLANTING ON DIFFERENT SOILS 



126. On good soils it is generally recognized that plant- 

 ing should be thicker than on poor soils. This is shown by 

 data obtained by the Illinois station.' In a series of tests 

 on different soils, corn was planted in hills at various dis- 

 tances apart and two or three stalks per hill. Grouping 

 the data so as to include all fields yielding more than 50 

 bushels per acre in one class, and all yielding less than 50 

 bushels in the other class, the following results are obtained : 



TABLE XLIII 



Rate of Planting and Yield on Soils producing More or 

 Less than 50 Bushels per Acre 



On productive soil the yield was increased by the thicker 

 planting ; but on the poorer soil two kernels per hill 

 evidently furnished the maximum stand, as no further 

 increase was secured by three kernels per hill. Data 

 from the Indiana station show that in dry seasons the 



> lU. Agr. Exp. Sta., Bui. 1S6: 366-377. 1908. 



