Smithsonian Report, 1940. — Carter 



Plate 6 



1 . A Test of Curly Top Resistant Beets. 



The dark strips are U. S. No. I resistant variety which yielded 13. G tons per acre. The light strips are a 

 susceptible European variety and yielded 2.5 tons per acre. 



2. STRIP PRUNING OFTEA PLANTS TO LOCALIZE I NFESTA I K 



4 



GS. 



The recently pruned strip is in the center of the picture; the unpruned plants in the background and right 



foreground. 



