Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Efficacy of Different Botanical and Chemical Insecticides Against Rice Hispa (dicladispa Armigera)

P Roy
Department of Entomology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

MM Uddin
Department of Entomology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

KS Islam
Department of Entomology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

KR Das
Department of Entomology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

Abstract/ Executive Summary:

An experiment was carried out in the Entomology Field Laboratory of Bangladesh Agricultural University (BAU), Mymensingh to determine the efficacy of six botanicals and four chemical insecticides for controlling rice hispa, Dicladispa armigera during the period of July to December 2013. In conducting the experiment BR11 rice variety was selected where ten treatments namely six botanicals such as Neem oil, Mahogany oil, Mixture of Neem and Mahogany oil, Bishkatali leaf extract, Pitraj leaf extract and Mixture of Bishkatali and Pitraj leaf extract and four chemical insecticides Sevin 85SP, Advantage 20EC, Cup50EC, Kinalux 25EC were laid out in the Randomized Complete Block Design (RCBD). Overall leaf infestation by rice hispa and infestation by adults and grubs separately were recorded at different time intervals. In addition to these, overall effect of pest infestation on the grain yield of rice was also examined. Among the six botanicals, Neem oil was most effective in controlling rice hispa, as overall leaf infestation was 21.20% and the infestation by adults and grubs were 14.43% and12.57%. On the other hand, among chemical insecticides, maximum efficacy was found under the treatment of Sevin 85SP where minimum leaf infestation was 9.22%, infestation by adults and grubs were 5.88% and 5.00% respectively. In case of yield, Sevin 85SP (4.62 ton/ha) showed the best efficacy in comparison to other treatments. Therefore, application of Sevin 85SP (3.46ml/L) and Neem oil (2 ml/100 ml) were examined as the best options in controlling rice hispa. So, it could be recommended to use Sevin 85 SP and Neem oil for the management of rice hispa.

Keywords: Efficacy, Insecticides, Rice, Hispa, Neem oil,Mahogany oil, Pitraj leaf extract

Location: Entomology Field Laboratory of Bangladesh Agricultural University (BAU), Mymensingh

Start Date: 00-07-2013

End Date: 00-12-2013

Program Area: Pest Management

Commodity: Insecticide

Objectives:

The present research was condcuted with Neem oil, Mahogany oil, Pitraj & Bishkatali leaf extracts and their mixtures as well as four chemical insecticides.

Methodology:

The experiment on the efficacy of selected botanicals and chemical insecticides against rice hispa (Dicladispa armigera) was carried out in the Entomology Field Laboratory of Bangladesh Agricultural University (BAU), Mymensingh during July to December 2013. BR-11 rice variety was used as host plant. The entire experimental field was divided into 33 plots. Two adjacent unit plots were separated by 50 cm apart at both sides to facilitate different intercultural operations. Each experimental plot was 4m². At first the land was ploughed with a power tiller and kept open to sunlight. The land was then gradually ploughed and cross-ploughed several times with a power tiller to obtain good tilth. All weeds and stubbles were removed from the field during land preparation. The unit plots were prepared with the application of cow dung at the rate of 15 ton/ ha. The phosphate potassium and zinc fertilizers were applied in the experimental plots at the rate of 100, 70, 10 kg /ha respectively in the form of triple super phosphate, muriate of potash and zinc sulphate respectively. The entire amount of TSP, MoP and zinc sulphate were broadcast and incorporated into the soil during final land preparation. Urea used at the rate of 135 kg/ ha was applied as top dressing in three installments at 15, 30 and 50 days. The plant spacing was followed as 25×20 cm. All suitable agronomic practices were done for proper growth and development of the plants. The field trial comprised ten treatments viz Neem oil, Mahogany oil, Mixture of Neem & Mahogany oil, Bishkatali leaf extract, Pitraj leaf extract and lastly Mixture of Bishkatali & Pitraj leaf extract and four chemical insecticides namely Sevin 85SP, Advantage 20EC, Cup 50EC, Kinalux 25EC. Efficacy of the insecticides and the botanicals were determined in the field on the basis of percentage leaf infestation and effect on the yield. A standard dose was selected for applying in the field. Six concentrations (2%, 2%, 2%, 10%, 20% and 10%) for botanicals and four (3.46ml, 2.96ml, 2.96ml, and 2.47ml) for chemical insecticides were selected for each treatment. Ten treatments were laid out following the Randomized Complete Block Design (RCBD) and each treatment was replicated three times. Neem and Mahogany oil were collected from Dhaka. Bishkatali and Pitraj leaf extract was prepared by crushing the leaves using a hand blender in the Entomology Laboratory. The first spray was done at 30 DAT (Days after Transplanting). All ten treatments were sprayed three times at ten days interval with three replications in the field. Data were collected after ten days of each spraying. Data were analysed following ANOVA with the help of computer package MSTATC. The mean differences among the treatments were adjudged as per test with Duncan's Multiple Range Test (DMRT) and Least Significant Difference (LSD) when necessary (Gomez and Gomez, 1984).

Source of Information: Progressive Agriculture 28 (2): 64-72, 2017

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Among six botanicals, Neem oil was most effective in controlling rice hispa where the leaf infestation by adults and grubs were 14.43% and12.57%, respectively. On the other hand, three chemical insecticides tested maximum efficacy was found under the treatment of Sevin 85SP where minimum leaf infestation was 9.22%, infestation by adults and grubs were 5.88% and 5.00% respectively. In case of yield, Sevin 85SP (4.62 ton/ha) provided the best efficacy among all the treatments.

Knowledge Management: Journal