April, 1906.] Ascochyta pisi — Disease of Seed Peas. 
511 
the least on the sprayed crop. Though the sprayed rows and 
those tied up, produced, in general, more than the checks, the 
gain was scarcely sufficient to warrant such treatment merely 
to increase the quantity of peas. The object, however, of such 
treatment, is more for the purpose of growing uninfected seed 
peas in order that so great loss may not be experienced from a 
poof stand and to start a crop free from the disease. This, on 
soil free from the disease, ought to improve the situation. Al- 
though a test of the per cent, of germination of the 1905 seed has 
not yet been completed, the seed from tied up and from sprayed 
peas, was much freer from the fungus than that from the check 
lots. Notwithstanding the great care in spraying, the results 
are certainly not what they would be under more favorable 
conditions of weather. The almost daily rains rendered it im- 
possible to keep a coat of Bordeaux on the plants. 
TABLE II. 
Sprayed. 
Unsprayed 
%G.or 
L. in sp. 
in early 
planting. 
VARIETY. 
Tied 
up. 
Not 
t. up 
%G- 
or L. 
Sprayed 
late. 
Not sp 
lale. 
%G. 
or L. 
Not t. up 
uor sp. 1. 
! 
6^0 1 
Early 
pl.‘ 
Late 
pi. 
French June 
24.2 
25.9 
I 6.6 
12 6 
9.5 
t32.6 
14.7 
t29.1 
21.4 
*. . . . 
t21.0 
26.. 3 
20.3 
t29.5 
9.6 
8.2 
tl7.1 
19 9 
fl7.2 
21 6 
4.5 
t 6 0 
* No late planting made, t Gain. J Loss. 
The early training up of peas seems to be an important factor 
in securing healthy seed peas, since the fungus makes its first 
attacks near the ground and gradually works itself up the stem, 
branches and leaves. The height (on the plant) to which the 
fungus will attain in a given time, is therefore dependent, to a 
certain extent, upon how much of the vine lies upon the ground. 
Hosts.- — All the varieties of the common pea examined dur- 
ing the past year, were found to be affected with Ascochyta, 
though some much more seriously than others. 
The following is a list of those carefully examined: 
French June Very badly. 
Market Garden 
Admiral Badly. 
Dwarf Telephone. . . . Very badly. 
Telephone Badly. 
Prosperity Badly. 
American Wonder . . .Very badly. 
Advancer Badly. 
Alaska Slightly. 
So far as the writer is able to learn, no investigations have 
been made as to the susceptibility of varieties. Aside from the 
genus Pisum however, it has been found ta attack Medicago 
sativum", Cicer arietinum,''^ Phaseolus vulgaris'’^ and Vida vil- 
11 . Lagerheim. Bihang till K. Svenska Vet. — Akad. Handlingar. 1898. Bd. XXIV 
Aid. Ill, No. 4. 21p. 
12. Rostrup. “Tidskrift for Landrugets Planteavl" V, No. 14, Kjobenhavn 1898. 
13. Carruthers, Jour. Roy. Agr. Soc. Eng. Ser. 10 (1899) pts. 4, .678-688. 
