2o6 PLANT GROWTH SUBSTANCES 



i6. , and Tandon, R. K., Minn. Farm & Home Set'., V:6 (1948). 



17. Elder, W. C, Res. Rep. $th Ann. N. Cent. Weed Cont. Conf., Sect. Ill 



(1948). 



18. , and Davies, Frank F., ibtd.. Sect. Ill, No. 80 (1948). 



19. Erickson, L. C, Seely, C. I., and Klages, K. H., /. Am. Soc. Agron., 



40:659 (1948). 



20. Foster, J. Roe, Res. Rep. ^th Ann. N. Cent. Weed Cont. Conf., Sect. Ill, 



No. 25 (1948). 



21. Friesen, H. a., ibid.. Sect. Ill, No. 29 (1948). 



22. FuELLEMAN, R. F. and Slife, F. W., ibid.. Sect. Ill, No. 64 & 65 (1948). 



23. GoDBouT, Eugene, ibid.. Sect. Ill, No. 15 (1948). 



24. Goodwin, H. F., Slife, W., and Fuelleman, R. F., ibid.. Sect. Ill, No. 9 



(1948). 



25. Helgeson, E. a., Blanchard, K. L., and Sibbitt, L. D., Bimonthly 



Bull, N. Da\. Agr. Exp. Sta., X: 166 (1948). 



26. HoLDEN, C. A., Jr., Brooks, J. S., and Elder, W. C, Res. Rep. ^th Ann. N. 



Cent. Weed Cont. Conf., Sect. Ill, No. 67 (1948). 



27. Jugenheimer, R. W., Slife, F. W., and Fuelleman, R. F., ibid., Sect. 



Ill, No. 68 (1948). 



28. Kelly, Sally, Am. J. Botany, 35:810 (1948). 



29. Klosterman, H. J. and Clagett, C. D., Bimonthly Bull., N. Da/{. Agr. 



Exp. Sta., XI:96 (1949). 



30. Lee, Oliver, C, Proc. $th Ann. Meet. N. Cent. Weed Cont. Conf., 18 



(1948). 



31. , Res. Rep. ^th Ann. N. Cent. Weed. Cont. Conf, Sect. Ill, No. 73 



(1948). 



32. Leggett, H. W., ibtd.. Sect. Ill, No. 21 (1948). 



33. Leng, E. R. and Slife, F. M., ibid.. Sect. VIII, No. 7 (1948). 



34. Marth, p. C. and Davis, F. F., Botan. Gaz., 106:463 (1945). 



35. Marth, P. C, Toole, V. K., and Toole, E. H., /. Am. Soc. Agron., 



39:426 (1947). 



36. , ibid., 39:780 (1947). 



37. Miller, John H., Unpublished data, U.S.D.A., University Farm, St. 



Paul (1948). 



38. Mitchell, John W. and Linder, R. J., Res. Rep. ^th Ann. N. Cent. Weed 



Cont. Conf, Sect. VIII, No. 9 (1948). 



39. Norman, A. G., J. Am. Soc. Agron., 40:111 (1948). 



40. Paatela, Juhani, Valtion Maatalouskpetoiminnan Jtdl^nsuja, 131 (1949). 



41. RossMAN, E. C. and Staniforth, D. W., Flant Physiol., 24:60 (1949). 



42. Sexsmith, J. J., Res. Rep. $th Ann. N. Cent. Weed Cont. Conf, Sect. Ill, 



No. 33 (1948). 



43. Shafer, N. E. and Wolfe, H., ibid.. Sect. Ill, No. 77 (1948). 



44. Shaw, W. C. and Willard, C. J., ibid., Sect. Ill, No. 7 (1948). 



45. Tandon, R. K., Agron. J., 41:213 (1949). 



46. Viehmeyer, Glenn, Res. Rep. ^th Ann. N. Cent. Weed Cont. Conf, Sect. 



Ill, 78 (1948). 



47. Weaver, R. J. and De Rose, H. R., Botan. Gaz., 107:509 (1946). 



48. Willard, C. J. and Shaw, W. C, Ohio Agr. Exp. Sta., Farm & Home 



Res. Bull., 255:188 (1948). 



