134 



SOUTHERN FIELD CROPS 



Around the edges of this breeding-plot, plant the best 

 ears not used in the breeding-plot, these " general-crop 

 rows " serving partially to exclude pollen of inferior plants 

 and of other varieties. If practicable, let this breeding-plot 



FIG. 72. DIAGRAM SHOWING ARRANGEMENT OF Rows IN CORN 

 BREEDING-PLOT. 



Dotted lines represent detasseled parts of each row, from which seed 

 corn is selected ; continuous lines represent parts of each row not d.etas- 

 eled ; the best ears (1, 2, 3, etc.) are planted near the center of the plot. 



be at least a quarter or half of a mile from any other field 

 of corn, and preferably separated from any other corn by 

 woodland. 



