134 



plat experiments must, then, be afterwards put to the tests of larger 

 areas. However, small-plat work gives valuable indications as to earli- 

 ness, character, and quality of varieties. [In the experiments reported 

 in this bulletin], the full size of plat was 20 feet long hy 3 feet wide. 

 * * * The fall i^lat was nineteen hills; where a less number came 

 to maturity, in calculating the yield per acre, the plat has, in all in- 

 stances, been reduced to a perfect stand. The possibility of misleading 

 results in yields so calculated is patent to all." 



Wisconsin Station, Bulletin No. 23, April, 1890 (pp. 11). 



Prevention of apple scab, E. S. Goff (illustrated). — This con- 

 tains a brief, illustrated account of the apple-scab fungus {Fusicladium 

 dendriticuni. Fckl.), and details of experiments in the use of fungicides for 

 this disease, conducted by the author and Mr. A. L. Hatch, of Ithaca, Wis- 

 consin, in CO operation with this Department. These experiments are 

 also reported in Bulletin l^o. 11 of the Section of Vegetable Pathology 

 of this Department, pp. 22-29. As the result the author is confident 

 that damages from apple scab may be almost entirely prevented at a 

 slight cost by spraying the trees once in two or three weeks during the 

 summerwithammoniacalcarbonateof copper, of a strength not to exceed 

 1^ ounces of the carbonate and 1 quart of ammonia to 100 quarts of 

 water. 



