Page 13 - Lac culture operations - IINRG, Ranchi

.
By weight, 350-400 g of good quality broodlac (10_15 g per metre) is needed for
inoculation in October/ November on a medium sized tree of palas.
r lnoculate the pruned trees in october/ November and harvest broodrac after one
year in same month when crop is mature, permitting self colonisation jn
the month
of )une/ )uly.
' Harvest the excess broodrac iac from trees to earn some money in the month of
June/July.
. Leave small quantity of scattered lac (cheri- cheti) in October/ November (when

brood is harvested) and allow it to develop as encrustation to be collected as im_
mature (arl) lac, while pruning the trees in the month of March or April.
.
Remove twigs with dead insects from the host plant every year in the month of April
while pruning the trees.

(b) lmmature (ari)-lac set;
. Brood rate for inoculation: palas and ber.. 20-25 g/meIre shoot length.

' By weight 1.o o( 1.5 kg of broodrac is needed for inocuration of a medium sized
palas and 2.0 or 2.5 kg lor ber tree respectively.
' lnoculate in the month of october/ November and harvest in Apr from paras vee
and in May from ber trees.

Schleichera ol eosa (KUSU M)
' Divide the total trees into five groups (sets) with equal number of trees in each set
(Table 5).
o Take combined crop of aghani +
i.ethwi or iethwi + aghani every year on each set
but with partial harvesting after 5 month of inoculation.
,
- Harvest the crop completely after one year of inoculation and simultaneously prune
the tr€es.
' lnoculate one set of trees for raising aghani + jethwl at every six months interval or
iethwi + aghani crops in subsequent years.
' lnoculate the trees after 18 months of pruning depending on availability of shoot.
.
lnoculate the trees in the month of )anuary/ February for raising aghani + iethwi
crop and June/July for jethwi + aghani crop.
' To inoculate the trees, use the broodlac obtained from partial harvesting of another
set.
.
To estimate the requirement of broodlac per tree, calculate @ of 20 g for one metre
tender shoot length.
. Normally 4-8 kg of broodlac is required per tree for raising jac culture.