CULTURAL PRACTICES 



191 



percent. Wilson (19) of the Alabama Station has tested a number of 

 seed-treating materials on Spanish and runner peanut seed. He reported 

 that stands were improved by each of several materials used. However, 

 some of them gave better results than others. He found that the response 

 to seed treatment of Spanish and runners was about the same. 



Results at the Alabama Station (table 24) show the effect of various 

 seed disinfectants on emergence of machine-shelled Spanish and runner 

 peanuts over a period of 5 years. Treatments with 2 percent Ceresan and 

 DuBay 1452-F (IJ^ ounces of the latter to 100 pounds of seed) were two 

 of the best. These results are similar to those obtained at the Georgia 



Table Z4. — Effect of Various Seed Disinfectants upon Emergence of Machine- 

 Shelled Spanish and Runner Peanuts, Main Station, Auburn, Alabama 



Disinfectant 



Rate of application per 



100 pounds of shelled 



seed 



Average number of 

 plants from 100 seeds 



Spanish 



Runner 



Ounces 



Percent 



Percent 



None 



Merc-0-Dust. . .. 



Dow9B .. 



Yellow Cuprocide. 



Spergon 



Arasan 



Phygon 



Ceresan, 2 percent 

 DuBay 1452-F... 



3 



3 

 4 

 4 

 3 

 2 

 4 



48 

 69 



65 

 66 

 71 

 62 

 78 

 86 



58 

 67 

 71 

 73 

 79 

 83 

 80 

 87 

 85 



Coastal Plain Experiment Station (9) where 2 percent Ceresan, Arasan, 

 Spergon, U. S. R. No. 604 and Dow 9B were found to be of value in the 

 order named. DuBay 1452-F used at the rate of 3 ounces per 100 pounds 

 of seed at the Georgia Coastal Plain Station was toxic to the peanut 

 seed. 



The North Carolina Experiment Station (15) obtained quite satis- 

 factory results from seed treatment of machine-shelled seed. In some 

 cases the percentage of emergence from treated seed has been more than 

 twice that of untreated seed. Some results from seed treatment obtained 

 by the North Carolina Station are reported in table 25. This Station has 

 also conducted tests with Virginia Bunch and Spanish peanuts, in which 

 hand-shelled, machine-shelled and unshelled seed of these two varieties 

 were treated with Arasan. The results of a representative field experi- 

 ment involving this treatment are given in table 26. 



It will be noted that treating machine-shelled peanuts with New 



