New York AcricutruraL ExprerRIMENT STATION. 207 
It is worthy of note that in every section the row treated with 
paris green alone outyielded the adjacent row treated with paris 
green in lime water, the average difference being at the rate of 
12 bushels, 16 pounds per acre. This difference is so small that 
it is not safe to base a conclusion upon it, but it suggests that the 
lime may have been detrimental. Of course there is no reason to. 
believe that the lime injured the foliage. As a matter of fact 
there was no evidence of any injury, but it is possible that the 
lime counteracted the fungicidal action of the paris green. As 
there was no tendency to paris green injury in the experiment 
no benefit from the lime could be expected. Had the conditions 
been such as to induce paris green injury the results of the experi- 
ment would undoubtedly have been in favor of the lime. We 
would not discourage the use of lime with paris green when the 
choice lies between using the paris green alone and using it in 
lime water. However, we believe that the best method of all is 
to use the paris green always with bordeaux mixture. 
That paris green possesses some value as a fungicide is not a 
new idea. As early as 1891 Goff'? at the Wisconsin Station 
Showed that apple scab may be materially checked by spraying 
with paris green in lime water. In experiments made by Lode- 
man’*® in 1892 paris green used alone reduced the injury from 
scab on King apples 17.7 per ct. and on Baldwins 7 per ct. The 
use of paris green and land plaster as a preventive of potato 
blight was suggested as early as 1886.1° However, little or no 
attention was given the matter. The superior merits of bordeaux 
mixture as a fungicide have so overshadowed those of paris green 
that the fungicidal properties of the latter have been lost sight 
of completely. Time and again the statement has been made that 
paris green is not a fungicide. Ags recently as 1903, Jones and 
Morse” in discussing the results of a potato spraying experiment 
at the Vermont Station concluded that, “ Neither paris green nor 
bug death used alone have any value in checking late blight.” 
In the experiment here at Geneva the results were so striking 
that there can be no doubt that paris green materially checked the 
Goff, E. 8. U.S. Dept. Agr. Rep. for 1891, p. 364; and Wis. Exp. Sta. 
Rep. 9: 264. > 
1®Lodeman, E. G. Cornell Exp. Sta. Bul. 48: 272. 
2B. F. J. in Country Gentlemen for May 27, 1886, p. 405; see also Lode- 
man, Spraying Plants, p. 98. 
2 Jones, L. R. and Morse, W. J. Vt. Exp. Sta. Rep. 16: 160. 
