PBEPABATION AND PL ANTING 



177 



The rate of planting is partly regulated by the size of 

 plant. Plants in the Gulf States are about twice as large 

 as in the Northern States, due in part to climate and also 

 to' the longer growing season. 



It has been shown, however, that for a given place the 

 rate of seeding within wide limits does not have a marked 

 effect on yield. An experiment regarding this point was 

 conducted by the Illinois Agricultural Experiment Station.^ 



Fig. 51. — A Southern method of planting on poor soils. Rows wide 

 apart, and a crop of peanuts between. For soil improvement cowpeas 

 are sometimes grown between. 



For three years corn was planted at rates varying from 

 5,940 to 47,520 kernels per acre. The maximum yield 

 was obtained with 11,573 kernels per acre, though almost 

 as good yields resulted when 15,840 or 23,760 kernels were 



I lU. Agr. Exp. Sta., Bui. 13 : 410. 



