A peon Pest* f Fhaseclus Itmatus), Rangoon bean* 
4 Wl/< i* *«* fc* 
During the course of the Acclimatisation Experiments on 
beans, the progress of the same Tras and is seriously hampered 
Trith because of the pest* It 7ras noticed in the jfursery and 
in the block no *15 that the seedlings of the bean rare ~- 
Triltiug. On examination of the seedlings 9 * it Tras 
observed that the injury ras being done by a maggot like 
larvea/ and a fungus Rhizcctcnia. 
It cannot definitely be said Trhich attacks the seedlings 
t- ■ • ' ■ . 
first . TScrough axam of tlis siil and the seedlings indicated 
that the attack *as severe in those cases vhere rar and not 
thoroughly decayed manure ttus applied. ( This Tras put Just 
underneath the seedlings. ) 
The life history of the pest:~~~ 
v * V ’ 
Thb eggs are laid either on the decayed stem or in the soil. 
The tiny maggot comes out and begins its srork on the plant. 
The'larvae coamencesthe Irork from doirn the root and can be 
seen migrating up the stem and into the petioles* It is 
a soft creamy Trhite legless larva turning bro7. r n in its later 
moults* ( The simultaneous action cf the fungus and the maggot 
pull dcv:n the seedling to the grouud , the stem being ~~ 
exce^dlingly flaccid .Most of the rhizcctonia symptons can be 
-'i. ’• " i 
seen on the seedlings. 
A feTr of the seedlings vrsre lifted vith a lump cf soil * 
and put into a small earthen pot to ?rcrk it s life history. 
~ 1 1* 
The pet tt&s enclosed into a cage* The larval period covers 
10—15 days. They all formed brevru cleared cocoons wherever 
they TP9**e feedi^.g^f. 
The pupal period extends from 8—1C days. 
[f ‘vg . ,•/ , f ' 
: * 
