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~ x . , . é 1 jars 
568 Report OF THE HoRTICULTURIST OF THE Age 
TABE HE: . f 
Series A.—Sor. AND SEED SPRAYED AT PLANTING TIME. i, 






STATION, EXPERI- PERUVILLE EXPERI- AVERAGE OF ALL | 
MENTS. MENTS. - EXPERIMENTS. is 
Treated | Untreated | Treated. | Untreated.| Treated. | Untreated. 
a Copper sulphate ....; .* | * 55.0 69:9 | «ap a 
b Iron sulphate... ....| 42.7 63.8 89.5 86.2 66.1 75.0 — 
e Zinc sulphate ....... | 26.8 63.8 92.5} ~ 90.9 70.6 BL 
d Eau Celeste ......... eee We 58.3 92.9 93.2 77.0 BL Ursa 
e Bordeaux mixture .., 44.2 HOE he OT 0 94.3 75.4 79: Gui ae 
f Mercuric chloride...' 13.5 40.9 86.5 93.1 50.0 67.0 
g Ammoniacal solution 
of copper carbonate.) 37.8 40.6 9171 87.0 64.4 | 63.8 



S:rigs B 
.— SEED SoAKED BEFORE PLANTING. 



— 









STATION EXPERI- PERUVILLE EXPERI- AVERAGE OF ALL og 
MENTS, MENTS. EXPERIMENTS. 
| Treated | Untreated | Treated. | Untreated.) Treated. | Untreated. 
a Copper sulphate ....|  * Es 97.2 96.7 | C20 sa eee 
biIron sulphate ....... 1 BB L9 49.5 88.1 93.3 57.5 71.4 
¢ Zinc sulphate....... | 84.6 49.5 | $58.4 92.1 46.5 70.8 
d Kau Celeste ......... Rr det Ve Crna to PO Po ee ONG 
é Bordeaux mixture...) 22.9 34.9 93.1 97.5 58.0 §6.2 wel 
Ff Mercuric chloride...) 15.1 34.9 96.5 97.7 55.8 66.3 
g Ammoniacal solution : 
of copp: r carbonate. | * i 98.0 98.5 1. i eae oe ee te; 



On much of the ground used in the Peruville experiments + i 
every fungicide tested proved either utterly or practically useless 7) 
whether the seed was soaked or sprayed, so that when these 
_ results are included in the average results of all experiments the 
per cent. of injury from the scab is much higher and the apparent 
effect of the treatment is less marked than is the case with the ~ 
experiments on other soil. / TAN 
It will be noticed that at the Station the treatments apparently 
lessened the amount of the scab in every instance. The differ- — 
ence in the per cent. of scab, comparing the treated rows with 
corresponding untreated rows, is given in the following table. 
- . si 4 - 
ie ‘ 2 Er ¢ a 
ya Neen Coney 
So 
ee ie wy 
Bites Le _ 
> * ee me 


* Results were unfortunately vitiated. 4 
+ Treatment killed the seed. 
¢ A comparison with other untreated rows indicates that the soil of this experiment might — i 
have been less thoroughly infected than it was in the untreated rows with which it must be — ;: 
compared. AS 

