Page 9 - Lac culture operations - IINRG, Ranchi

2. lNocuLATloN: Tying of broodlac bundles (lac stick with mature female insect) on host
twigs for release of young lac larvae (crawlers).

WHEN . Normally in the month of )anuary/February and June/July Ior
iethwi and aghani
ctop of kusmi strain respectively.
ln the month of October/ November and )une/)uly lor baisakhi and katki crop ot
ran geen i strain, respectively.
To raise new crop of lac.
HOW Remove the leaves and unwanted portion of the shoot from broodlac.
Cut broodlac sticks Weferably 15 -20 cm. in length.
.lO
Weigh about 1 kg broodlac and divide into approximately into equal parts.
Prepare the bundles of broodlac (about 100 g by weight) and tie w;th plastic sutli
both the end by keeping a bit longer for tying on the shoots.
le the bundles of broodlac on the lower part of the pruning point parallel to shoots
where approximately 5-10 succulent shoots are available.
Use 50 mesh nylon netting bag (33 x 10 cm. or of convenient size) if available, to put
broodlac inside and then tie on shoots of the host tree, allowing lac insect crawlers to
come out and lac predators/ parasites to trapped inside.
One metre long broodlac is sufficient for 10 - 15 m.long inoculable shoots.
While inoculating kusum trees prefer to inoculate the trees with broodlac on outer
slde for aghani and inner side of the host crown, for raisin g iethwi crcp.

3. REMOVAL OF USED-UP BROODLAC STICKS (PHUN(/):

Used-up broodlac sticks after complete emergence of lac larvae from female cells is
called phunki.

WHY . To prevent access of the insect predators and parasitoids of lac insect to new lac
crop.
. To avoid wastage of lac after drying up oI phunki and prevent its falling on ground.
WHEN . Remove the phunkl as soon as emergence of lac crawlers is over.
. Normally swarming is completed within 3 weeks of inoculation.
How . Use small dauli or phunki removal hook mounted on top of a bamboo without
climbing on tree.

PEST MANAGEMENT (SPRAY OF PESTICIDES):
Insecticides: Cartap hydrochloride 50 SP (e.g. Caldan) for control ol Eublemma amabitis
and Pseudohypatopa pulverca or ethofenprox 10 E,C. (Nukil) for controj of Chrysopa
spp (Neuroptera), Eublemma amabilis and Pseudohypatopa pulverea (Lepidopteran).

Fungicide: Carbendazim 50% W P (e.g. Derosal or Bengard or Bavistin etc) for control
of fungi. Normally used during rainy season.
(Use pesticides only after observing incidence of insect predators)