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Development of an Integrated Pest Management (ipm) Approach for the Control of Insect Pests of Stored Wheat

A.K.M. Z. Rahman
Entomology Division, BARI, Gazipur

M. S. Ahmed
Entomology Division, BARI, Gazipur

D. Sarker
Entomology Division, BARI, Gazipur

S.N. Alam
Entomology Division, BARI, Gazipur

Abstract/ Executive Summary:

This study was carried out in the laboratory of Entomology Division, BARI during 2013-2014 to find out most effective management option against stored grain insect pests of wheat grain. Among the treatments, Aluminum phosphide (Phostoxin 57%) tablet @ 4 tablets/ton seed provided the highest protection (6.89%) of stored wheat pests followed by Pirimiphos methyl (Actellic 50EC) @ 10ml/1 of water (12.11 %). In 150g sample the lowest number of rice weevil (5.78), red flower beetle (1.00) and rice meal moth (0.22) were observed in Phostoxin 57% treatment followed by Actellic 50EC. Among the treatments, the highest percentage of germination (85.90%) was observed with Phostoxin 57% treated grain followed by Actellic 50 EC treated grain (82.97 %) while the lowest percentage of germination was observed in untreated control (51.60%).

Keywords: Development, Integrated pest management, Insects pests, Wheat

Location: Laboratory of Entomology Division, BARI

Start Date: 00-00-2013

End Date: 00-00-2014

Program Area: Pest Management

Commodity: Wheat

Objectives:

To find out the effective management option against stored grain insect pests of wheat grain.

Methodology:

This study was carried out in the laboratory of Entomology Division, BARr during 2013-2014. Wheat seeds were collected from Regional Wheat Research Center, BARI, Gazipur. Seven treatments were assigned in completely randomized design with three replications. The treatments were as follows: T₁: 50% seed + 50% dry sand; T₂: Neem seed powder @ IOg/Kg seed + Bracon hebetor @ I pairlKg seed; T₃: Bracon hebetor@ I pair/Kg seed; T₄: Pirimiphos-methyl (Actellic 50 EC) @ 10ml/ L of water; T₅: Alluminium phosphide 57% (Phostoxin) @ 4 tablets /ton seed; T6: Neem seed powder @ 10gIKg seed and T₇: Untreated control. For this study, 1.5kg of chickpea seeds were taken in plastic bag, which was then kept in gunny bag. The gunny bag was than kept in the laboratory under ambient temperature (24-32°C) and relative humidity (65-90%). Neem seed powder @ 109/kg seeds were mixed properly in respective treatment. Other treatments were applied as per designed. Stored grain insects source were available during the whole study period. Data on per cent infestation by number and weight, per cent germination were recorded. To estimate the percent infestation, samples were taken from each treatment at an interval of 90 days 120 days and 140 days of storage. At each sampling 150g seeds were taken from 3 different places of each bag (top, middle and bottom). From each sample 100 grains were counted and separated randomly. Out of 100 grains bored and unbored grains by number and weight were recorded and the per cent infestation by number and weight were computed. Number of adult rice weevil, rice meal moth and red flour beetle were counted per 150g of seed sample. Germination test was done by taking 25 wheat seeds at random from each treatment and replicated 3 times. The seeds were placed in Petri dishes having blotting paper at the bottom soaked with water. The seeds were incubated at room temperature and germination was estimated by direct count. Germination test was done at 120 days after storage.

Source of Information: Annual Research Report, Entomology Division, BARI,2013-2014

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Significantly the lowest number of rice weevil (5.78), red flower beetle (1.00) and rice meal moth (0.22) per 150g grain sample were observed in Phostoxin 57% treated grain followed by Actellic 50EC (7.56, 1.99 and 0.33 respectively). On the other hand no significant difference was observed among rest of the treatments in reducing number of stored grain insect pests of wheat while the highest number of rice weevil (21.56), red flour beetle (12.00) and rice meal moth (1.33) was observed per 150g grain sample .

Knowledge Management: Report/Proceedings