: 51 
the Japan seedlings but this was the only place where disease of any 
kind was observed. An examination of the stocks revealed the fact 
that thirty-six of the untreated ones were affected with leaf-blight; 
three sprayed with Bordeaux mixture showed the disease and seven 
treated with the ammoniacal solution had their leaves slightly spotted. 
T. n stocks from each block were again measured, the results being as 
set forth in Table 21: 
TABLE 21.—Showing average height of original stocks, length of new growth, and average 
number of new shoots in each block on June 16. 




| Average Average | 7 
; height of length of Mea aaA 
Treatment. Stocks. original | Ve = | | 
stocks. | growth. : 
| Inches. | Inches. | Inches. 
intrested’ 2.<.-5 Wo 25s Japan pear seedlings ---.--.--- ee ae sy 5.21 | 24 
i eae eee French pear seedlings ...--.-..-.--- 5. 09 4.91 22 
rg eee ee ee ee Mahaleb cherry stocks-.----.--.----- 8.18 3. 81 3.6 
i) es eee ETSI EV) FD 2: ee ae 8.31 4.51 3.5 
RE ee Se Jepple Heed p so = 2 ee §. 01 4. 83 2.3 
ee eee oe ome St Mariana plam siecks ..-..-----=--- 13. 74 4.13 10. 2 
Bordeaux mixture ---------- | Japan pear seedlings ----..-..-.---- $5 Si! 5. 68 25 
eee French pear seedlings ----....----- 5. 09 4. 64 22 
1) Vite | Mahaleb cherry stocks --.--..------ 8.18 4. 64 3.9 
ee as ee eee PSST ro a ee We 5d 4.02 | 3.5 
Se eee eee Apple seedlings. --......-...-.-..-- 6.01 6.30 | 2.3 
7h cma So eee Sepa ens Mariana plum Hacks <= 3. S082 | 13.74 4.13 9.7 
Ammoniacal solution-.....-. Japan pear seedlings -.--..---...-- 5:51 6. 63 27 
TO eee eee | French pear seedlings Ea BP ed RE ent 5.09 4.13 23 
Wie Se ee ee a oa Mahaleb cherry stocks ------....-. 8.18 4. 65 4.0 
Was oS: 3S = - - a) GED AGRE oo a ee 8.31 5.45 4.0 
Was 2 =e se eee Son | nie SepMIIngS oo os 2. 2 oe 6.01 5.13 2.3 
i Le eg ee ee ee Mariana plum stocks..-......-...-- 13. 74 3.98 10.0 
a sulphide. ........ Cn Lo 6. 01 5. 52 1.9 


Fifth treatment (July 3).—The only change worthy of note which took 
place between the time of the fourth and fifth treatments was the marked 
increase of leaf-blight on many of the blocks. The French pear seed- 
lings were considerably affected, the disease being worse on the un- 
treated. No leaf-blight had appeared on the quince, cherry, and plum 
stocks. The apples, however, were showing powdery mildew. 
The time having arrived for budding the stock, the work was begun 
on July 17th and finished on the 18th. Each block was budded with 
three varieties in order to obtain a test of the treatments on suscepti- 
ble, moderately susceptible, and resistant trees. In the following table 
is given a detailed account of the budding: 
