26 
(2) RESULT OF EXPERIMENTS IN VINEYARD 6. 
First treatment (April 27).—Plats 2, 4,10, and 14 were sprayed at 
this time. The work on these plats was designed to obtain informa- 
tion upon questions 4 and 5 set forth at the beginning of the article. 
The condition of the vines, weather, ete., was in every respect the same 
as described under treatment 1 in Vineyard 1. 
Second treatment (May 13 ).—AlII plants treated on April 27 were again 
sprayed. No injury whatever followed the first application. The con- 
dition of the vines with respect to growth was the same as noted under 
second treatment in Vineyard 1. 
Third treatment (May 25).—Plats 2, 4, 10, and 14 were again sprayed. 
The average number of shoots at this time was 40; average length, 19 
inches; average size of leaves, 34 by 45 inches. Most of the vineyard 
yas in bloom, but these vines were a little backward, not more than 
half the flowers being open. 
Fourth treatment (June 9).—In addition to plats 2,4,10, and 14, Nos. 
6 and 8 were treated at this time. This, as already pointed out, was 
to test the effect of Bordeaux mixture, full and half strength, applied 
when the berries were the size of bird shot. No injury whatever had 
resulted to foliage, fruit, or wood from previous treatments. In order 
to obtain information as to the prevalence of rot, each vine was care- 
fully examined, the result being as follows: 
TABLE 9.—Showing the number of vines having their foliage affected with black rot on 
June 9. (No rot on fruit. ) 





_No. of 
Plat. Kind of treatment. Tne ne 
rot. 
Le (No “treatment: «02 o-oo 2ssot ec sh. cte eek sees aes se ae ean wean eee eee | 3 
2= | Bordeaux mixture tullistrenc thy eanlye. essen eee eee ee eee eee lowed SeReeeee 
3'> |. Noi treatment << Soc Sans sei bo i tame nes Hoos ena esa aes Ce ea 2 
4. | ‘Bordeaux: mixture, half strength, (Carlye- = 22-2. =e oe ee ee eee | eae eee 
5? “No treatment. .- 222 232% ais are sara tate al he ie ee ee eee ee ane Oe ete Sr ap 1 
6 | Bordeaux mixture, fall strength, late: ---2.. 2 oo. 32- 4-5 see os eee 2 ee eee 
ae Nortreatment:::. 1.023 Pe Sashes eee nae ote aac cetera Bey aera ae ola te ere eee “2 
S$! | Bordeaux, mixture; half/strength? lates-2--s-62 sees ee ee eee ae 
9) | “No ‘treatment. ..:% <5 2.6 20e dees oooaomes Se se Se ire a Soe ee ee ee eckson 
10 | Bordeaux mixture, full strength, early; 4 sprayings-----.-.------- RE SEE im conic: 
Ly) No. treatment: 2.2552 > sec .k ace its ee oe Seb oe Senet See ces Peas See eee 3 
12 | Bordeaux mixture, full streugth, carly; Sisprayiness--- 29s eee ase eee eee 
13) 3) Noe: treatment. <2. 52.22 226.2ce nes cise nesta ns oe ee eee ee eee ae eee eee 2 
14° | Bordeaux mixture, half strensth, early; 4 sprayim es. 24-2 22 <= sos. ea eee 
15: 3) No. treatment .2.,0/-,coclajn + sc)biee (a <leporcid namie leihas oa stole Belen nea ee ebiers A eee eer 
16) | Bordeaux mixture, half strength, early; 3 sprayim@s-------22---=---- = See 2--| soe eee 


From the foregoing it appears that 13 of the untreated vines were. 
affected with black rot on June 9, while only 1 of the treated showed 
the disease. This one received its first spraying on the day the obser- 
vations were made. The total number of clusters and the average 
number per vine are shown in the accompanying table. 
