262 Auxins in Agriculture 



variety of species has been tested and found to respond to such treat- 

 ment (Leopold and Guernsey, 1953). Many other methods and the 

 results obtained have been carefully reviewed by Kruyt (1954). 



Field experiments using auxin and low temperature treatments 

 have yielded large increases in pea and tomato crops, though the gains 

 may not be consistent from year to year (Leopold et al, 1953). 



In conclusion, the use of auxins to modify flowering, either by 

 spray treatments or by seed treatments, is not yet sufficiently well 

 understood for field use. Appropriate advances in physiological under- 

 standing of the role of auxin in flower initiation may ultimately make 

 such auxin treatments practicable. 



