8 BULLETIN' 188, U. S. DEPARTMENT OF AGRICULTUEE. 



Table IV shows that there was a marked decrease in the number 

 of stalks per plant where the plants were crowded. From the yields 

 obtained on these plats, particularly those shown in Table II, it 

 appears that this reduction of tillering is advantageous from the 

 standpoint of crop returns. As shown in Table IV, a large number 

 of the stalks found on Ma^^ 15 failed to mature heads. The produc- 

 tion of nonbearing stalks or tillers uses soil moisture without any 

 compensatory results. This being true, it seems desirable to reduce 



Fig. 3.— Close-spaced milo plants, showing almost total freedom from tillers and the resulting 

 high uniformity. ( Photographed June 4, 1913. ) 



the number of stalks per plant, and it appears that this can be readily 

 done by crowding the plants withm the row, as is shown in figures 

 3, 4, 5, and 6. 



EFFECT OF SPACING ON MATURITY. 



One of the most important requirements for the successful pro- 

 duction of grain sorghum in the San Antonio region is earh' and 

 uniform maturity. This is necessary, in order that the crop may 

 escape the ravages of the sorghum midge. 



