48 
Journal of Agricultural Research 
Vol. XXXI, No. 1 
Table XIX .—Results of cross inoculation of healthy pepper plants with cucurbit 
mosaic 
Date of 
inoculation 
Method of inoculation 
Location of 
plants 
Number 
of plants 
inocu¬ 
lated 
Number 
of plants 
mosaic 
Date 
observed 
May 8, 1920... 
Aphids from mosaic cucumber plant.. 
Greenhouse. 
6 
4 
May 15,1920 
Do_ 
Aphids from healthy cucumber plant 
(control). 
_do_ 
6 
0 
Do. 
May 18,1920... 
Aphids from mosaic cucumber plant.. 
.do_ 
6 
5 
May 27,1920 
Do_ 
Aphids from healthy cucumber plant 
(control). 
_do.. 
6 
0 
Do. 
May 28, 1920... 
Do.. 
Aphids from mosaic cucumber plant. _ 
_do_ 
8 
8 
June 10,1920 
Do. 
Aphids from healthy cucumber plant 
(control). 
_do_ 
8 
0 
July 19,1920. __ 
Aphids from mosaic cucumber plant. _ 
.do. 
4 
4 
Aug. 2,1920 
Do.. 
Aphids from healthy cucumber plant 
(control). 
_do_ 
4 
0 
Do. 
uly 20,1920.._ 
Do_ 
Aphids from mosaic cucumber plant.. 
Aphids from healthy cucumber plant 
(control). 
.do. 
7 
7 
July 28,1920 
Do. 
_do_ 
7 
0 
uly 23, 1920. __ 
Do 
Artificial___ 
.do. 
4 
3 
July 31,1920 
Control . __ 
.do__. 
4 
0 
Do/ 
July 24, 1920... 
Do 
Artificial__ 
.do. 
6 
2 
Aug. 2,1920 
Control_ _ 
_do... 
6 
0 
Do. 
July 29, 1920. __ 
Do 
Artificial 
Field.. 
19 
8 
Aug. 10,1920 
Do. 
Control__ _ 
_do__. 
9 
0 
Do 
Artificial___:. 
Greenhouse- 
6 
2 
Do. 
Dn 
Control 
_do. 
6 
0 
Do. 
Aug. 2, 1920.... 
Aphids from mosaic cucumber plant.. 
.do_ 
6 
6 
Aug. 10,1920 
Do.,. 
Aphids from healthy cucumber plant 
(control). 
.do_ 
6 
0 
Do. 
Aug. 4, 1920.... 
Aphids from mosaic cucumber plant.. 
.do_ 
6 
6 
Aug. 11,1920 
Do 
Aphids from healthy cucumber plant 
(control). 
Artificial ____ 
.do_ 
6 
0 
Do. 
Aug. 18, 1920... 
Dn 
_do_ 
8 
3 
Sept. 1,1920 
Control. _ 
.do. 
8 
0 
Do. 
Do 
Aphids from mosaic cucumber plant.. 
Aphids from healthy cucumber plant 
(control). 
.do.. 
8 
6 
Do. 
, Do_ 
_do.. 
8 
0 
Do. 
Sept. 2, 1920... 
Dn 
Artificial _ _ 
Field..:. 
18 
8 
Sept. 23,1920 
Control _ 
.do. 
18 
0 
Do. 
Aug. 10, 1922... 
Do 
Artificial _ 
...i.do. 
12 
5 
Aug. 22,1922 
Control_ _ 
.do_ 
8 
0 
Do. 
Aug. 14, 1922... 
Aphids from mosaic cucumber plant.. 
.do_ 
8 
8 
Aug. 24,1922 
Do. 
Aphids from healthy cucumber plant 
(control). <. 
_do_ 
8 
0 
Do. 
Table XX .—Results of cross inoculations from mosaic pepper to healthy cucumber 
plants 
Date of 
inoculation 
Method of inoculation 
Location 
Number 
of plants 
inocu¬ 
lated 
Number 
of plants 
mosaic 
Date 
observed 
Apr. 28,1920- 
Aphids from mosaic pepper plant. 
Greenhouse. 
18 
18 
May 15,1920 
Do.- 
Aphids from healthy pepper plant 
.do.. 
14 
0 
Do. 
July 8,1920- 
Do_ 
(control). 
Aphids from mosaic pepper plant. 
Aphids from healthy pepper plant 
Field_ 
.do. 
3 
3 
3 
0 
July 20,1920 
Do. 
July 19, 1920- 
(control). 
Aphids from mosaic pepper plant *_ 
.do_ 
6 
6 
Aug. 1,1920 
Do. 
Do_ 
Aphids from healthy pepper plant 
_do_ 
6 
0 
Mar. 26, 1922- 
(control). 
, Aphids from mosaic pepper plant. 
Greenhouse _ 
18 
13 
Apr. 7,1922 
Do_ 
Aphids from healthy pepper plant 
_do.._ 
10 
0 
Do. 
May 1, 1922... 
(control). 
Aphids from mosaic pepper plant- 
_do. 
28 
21 
May 10,1922 
Do. 
Aphids from healthy pepper plant 
(control). 
Artificial-_ 
.do_ 
14 
0 
Do. 
May 11,1922- 
Dn 
.do...... 
8 
4 
May 25,1922 
Cnntrnl _ 
.do. 
8 
0 
Do. 
June 10,1922.. 
Dn 
Artificial _ 
_do.. 
10 
5 
June 21,1922 
Cnntrnl _ _ _ 
.do. 
10 
0 
Do. 
Aug. 8, 1922 — 
Aphids from mosaic pepper plant °_ 
.do. 
4 
4 
Aug. 21,1922 
Do_ 
Aphids from healthy pepper plant 
_do_ 
4 
0 
Do. 
Apr. 15,1923— 
Dn 
(control). 
Artificial _ __ 
4 
2 
Apr. 25,1923 
Cnntrol _ 
.do_ 
4 
0 
Do. 
• Pepper plants found naturally infected in the field. 
