FORMALIN TREATMENT FOR OAT SMUT 



" ; 



seed drill. The - - - na thickly in rows fourteen inches 



apart and with a uniform depth of two inch-- As the plants 

 appeared they were thinned out so as to si s part 



in the rows except in the 1 — 10 Treatment where the plants 

 averaged eight inches apart, owing to lack of germination. 

 May 11th. and again on May 22d. the height in millinv I - 

 determined on 500 plants in each lot. At harvest time the 

 height of the plants was determined in inches. 



Table III. Effect of Formalin Treatments ox Yield. 



Treatment 



Ami of Seed 

 per Acre 



Wt. of Entire 

 Plant 



Cleaned Grain 

 Bu. per Acre 



Note: The above plots were 1/40 acre in size. The seed 

 thoroughly dried before seeding, being seeded at the rate of TO lbs. 

 per acre -with a garden drill. The drill rows were four inches a 

 and the grain seeded at a depth of two inches. 



As a result of these field I sts Gfoff concludes that under 

 practical field culture the yield of grain is not appreciably 

 fected by treating with a solution as strong as one pint of 

 formalin to 36 gallons of water. 



Clinton 12 1895-1898, after comparing the relative value of 

 hot water, formalin, copper sulphate, potassium sulphate, and 

 ceres pulver. concludes that hot water and formalin proved most 

 efficient. 



Table IV. Thf Effect of Formalix ox the Percentage of Smvt. 



Treatment 



Smutted 



Per cent 

 Snv. 



Formalin, 1 lb. to 25 ga water. 



Formalin, 1 lb. to 50 gal. water. 

 Formalin. 1 lb. to 100 gal. water. 

 Untreated — check plot 



N " a smutted panicle 

 21 smutted on plot 



out of 4 12.7 



out of 4 11.0 



For general use the author recommends the sprinkling method 

 with formalin having a strength one pound to 40 to 50 gallons 



