THE WILT DISEASE OF PIGEON-PEA. 
The moculations were made as in (b) above. 
(d) Indigo inoculated with Neocosmospora vasinfecta trom 
pigeon-ped. 
The culture used was that used to moculate pot V of Series V 
above. 
The plants were grown in pots containing soil to which the 
culture had been added several months previously and which had 
erown pigeon-pea in the interval. The soil was mixed with enough 
fresh soil to fill four pots. 
seed and two with Java seed, treated for 15 mmutes in strong sul- 
phuric acid. 
No. of plants and 
variety. 
Treatment. 
About 50 plants of | Inoculated with 
I. arrecta from | 
Java seed in 4. from I. sumat- 
pots. 
Ditto. 
About 100 plants of 
I. sumatrana in 6 
pots. 
Ditto. 
60 plants of I. 
arrecta from 
Java seed in 4 
pots. 
50 ditto. 
58 plants of I. 
arrecta from 
Natal seed in 4 
pots. 
About 100 ditto. 
11 plants of LI. 
arrecta in one of 
the control pots 
of the third ex- 
periment above. 
Neocosmospora 
rana. 
Not inoculated 
(control). 
Inoculated with 
Neocosmospora 
from I. suma- 
trana. 
Not inoculated 
(control). 
Inoculated with 
Neocosmospora 
from I. arrecta. 
Not inoculated 
(control). 
Inoculated with 
Neocosmospora 
from I. arrecta. 
Not inoculated 
(control). 
Inoculated with 
Neocosmospora 
from cotton. 
Date of sowing 
and inoculation. 
Result. 
Two were sown with untreated Sumatra 
Remarks. 
Sown and inocu- 
lated 21-8-07. 
Sown 21-8-07. 
Sown and inocu- 
lated 2-9-07. 
Sown 2-9-07. 
Sown and inocu- 
lated 17-4-08. 
Sown 17-4-08. 
Sown and 
inoculated 
17-4-08. 
Sown 17-4-08. 
Sown 17-4-08. 
Inoculated 
9-7-08. 
No deaths up to 
July, ’08. 
Ditto. 
No deaths up to 
March 28th, ’08. 
Ditto. 
No deaths up to 
March, ’09. 
Ditto. 
Ditto. 
Ditto. 
Ditto. 
Ditto. 
All the plants 
| in 1 pot were 
wounded by cut- 
ting down to the 
cambium — below 
| the ground level, 
| 8 weeks after 
| sowing. 
Ditto. 
Ditto in 2 pots. 
Ditto. 
