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Post-harvest Management of Lac Predator, Pseudohypatopa Pulverea in Storage Condition

M. M. Rahman
Senior Scientific Officer
Lac Research Station, Chapainawabganj

D. Sarker
Senior Scientific Officer
Entomology Division, BARI, Gazipur

M.E. A. Pramanik
Scientific Officer
Lac Research Station, Chapainawabganj

S. N. Alam
Chief Scientific Officer
Entomology Division, BARI, Gazipur

Abstract/ Executive Summary:

The experiment was carried out in the laboratory of Lac Research Station, Kallyanpur Chapai Nawabgonj during November 2011 to February 2012 for testing the effectiveness of some management approaches against lac predator, Pseudohypatopa Pulverea in storage. For effective management of P. pulverea, aluminium phosphide fumigation @ one-fourth tablet /5kg of lac for 1 day reduced 100% predator population over control. Sun drying for 2 days was also found effective and reduced 99.35% predator population over control. The highest recovery of seed lac from stored lac ( 57.40%) was also obtained from aluminium phosphide fumigation @ one-fourth tablet /5kg of lac for 1 day.

Keywords: Lac, Eublemma amabilis, Pseudohypatopa pulverea, aluminium phosphide

Location: Lac Research Station, Chapai Nawabgonj

Start Date: 10-11-2011

End Date: 25-02-2012

Program Area: Pest Management

Commodity: Insects

Objectives:

To develop effective management option(s) against Pseudohypatopa pulverea in storage.

Methodology:

The experiment was carried out in the Laboratory for testing the effectiveness of some physical and chemical control approaches to keep the stick lac safe in storage at Lac Research Station, Kallyanpur Chapai Nawabgonj during November 2011 to February 2012 with 7 treatments and 3 replications following RCB design. Three sets of experiments (one set for 30 days, 2nd set for 60 days and 3rd set for 90 days) were conducted in the laboratory. In each set, the treatments were as follows: T₁ = Storage followed by sun drying of stick lac for 1 day; T₂ = Storage followed by sun drying of stick lac for 2 days ;T₃ = Storage of stick lac followed by treated with aluminium phosphide tablet @ one-fourth/5kg of lac for 1 day; T₄ = Storage of stick lac followed by treated with aluminium phosphide tablet @ one-fourth/5kg of lac for 2 days ; T₅= Storage of stick lac followed by treated with by neem leaf dust @ 5g/kg lac; T₆ = Storage of stick lac followed followed by y neem leaf dust @ 10g/kg lac; T₇= Storage of untreated stick lac.

Source of Information: Annual Report 2011-2012, Entomology Division, BARI, Gazipur

Article Link (Online Journal):

Funding Source:

1.	Budget: 45,000.00

Total Budget (Tk.) : 45,000.00

Achievement/Findings:

Aluminium phosphide fumigation @ one-fourth tablet /5kg of lac for 1 day reduced 100% predator (Pseudohypatopa pulverea) population over control. The highest recovery of seed lac from stored lac (57.40%) was also obtained from aluminium phosphide fumigation.

Knowledge Management: Report/Proceedings