New York AGRICULTURAL EXPERIMENT STATION. 271 
EXPERIMENT III.— EFFECTS OF BORDEAUX MIXTURE CONTAINING AN 
EXCESS OF LIME. 
(a) As to injury. In this experiment four plats were sprayed 
with one part of copper sulphate to one of lime, a slight excess 
of the latter, since an equal weight of lime is not needed to 
neutralize the copper sulphate; and four plats were sprayed 
with one part of copper sulphate and two parts of lime, more 
than double the quantity of lime needed. There were five trees 
in each of the sprayed plats and the same number in the control 
plat. Table VI gives the detailed results. 
TABLE VI—Errects or BorpEAUX MIXTURE CONTAINING AN EXCESS OF 






LIME. 
| FRUIT. 
PLAT No. Strength of mixture. ae cms ere cree Soe ——. 
. Injured. Uninjured. Injured. 
C.S. Lime Water Lbs. ozs. Lbs. ozs. Per ct. 
(Bun 1 =a | —50 182 12 9343 8 6.1 
Lo 4 SS Sos 2 —=2 —-50 111 0 2099 3 5.0 
Soke oc Ee ae 3 —3 —50 209 5 2445 12 7.8 
2 Ee ee a, ae 4 —4 —50 aow Ss 1530 9 16.4 
Ais AS oye ee Check Trace 4 2509 Oa! en eeeeer, eee te 
(he SF. big ee er 1 ——7 —50 bare © hs} 2301 5 1.9 
Toa mace its eae ee re 2 ——4. —50 1074) 12 2485 6 4.1 
iol el ee 3 —6 —50 311 0 2617 9 10.6 
he Pei, aA te ant a alae eae 4 =———15 —50 £7 ORD 1487 2 LOST 






The figures in this table show plainly that an excess of lime 
- not only does not prevent bordeaux injury, but does not materi- 
ally lessen it. The slight differences in favor of the excess of 
lime are not out of the range of fortuitous variation as the 
figures stand. I have called attention to the fact that in Plat 1 
a Rhode Island Greening tree gave an abnormally large percent- 
age, 22 per ct., and that in Plat 9 a Rhode Island Greening tree 
gave an abnormally low percentage, 2.5 per ct. If we elim- 
inate these trees, two out of the 45 in the experiment, the per- 
centages in the results read for Plats Nos. 1, 2, 3 and 4: 4.,°5,, 
Peewancd 10.4 per-ct.;-and for: Plats’Nos.''6,°7, 8, and 97 1.9)" 4.1; 
10.60 and 17.2 per ct. With this reading, which it seems to 
me is more nearly correct than that given in the table, the excess 
of lime does not even decrease the amount of injury. 7 
These. results are corroborated everywhere in practice. In 
the letters” published in the preceding pages of this bulletin 
attention has been called to a number of cases in which double, 
® See letters, pp. 223-228, ae Batic | cae 
feast iaeeel BER HAS 
