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Effects of Management Practices of Leaf Roller in Groundnut Using Chemical and Botanical Insecticide

M. A. Monim
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute,Rahmatpur, Barisal

A. S. M. A. Monim
Department of Agronomy, Ser-e-Bangla Agricultural University, Dhaka

M. A. Baset
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute

M. M. Rahman
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute

R. Begum
Soil Resource Development Institute, Jamalpur

Abstract/ Executive Summary:

Management of leaf roller of groundnut (Anarsia ephippias) using chemical insecticide Perfecthion 50EC, zetpowder, neem kernel extract, and neem oil and their integration was studied at Regional Agricultural Research Station, .Bangladesh Agricultural Research Institute, Rahmatpur, Barisal during rabi season of 2007-2008 and 2008-2009. The infestation of leaf roller was noticed during 1st week of March and the highest infestation of leaf roller was 48 per plant observed in the last week of April in 2008, 2009. Among the treatments as expected Perfecthion 50EC reduced the highest leaf roller (98.61%) with the highest BCR (5.36) followed by Neem kernel extract + Zet powder (25.93%), Neem oil + Zet powder (19.79%). Zet powder (19.23%) and Neem kernel extract (13.10%) recorded at 15 days after spray over the pre-treatment count. Neem kernel extract + Zetpowder gave the second highest BCR (3.71) followed by Zetpowder (3.32), Neem oil+Zetpowder (3.15) and Neem kernel extract (2.8).

Keywords: Management practices, Leaf Roller, Groundnut

Location: Oilseed Research Centre, Regional Agricultural Research station,Bangladesh Agricultural Research Institute (BARI),Rahmatpur, Barisal

Start Date: 00-11-2007

End Date: 00-03-2007

Program Area: Pest Management

Commodity: Ground nut

Objectives:

1. To find out the most effective plant materials with their integration for the management of Leaf roller of groundnut.

Methodology:

The experiment was conducted in the field of the Oilseed Research Centre, Regional Agricultural Research station, Bangladesh Agricultural Research Institute (BARI), Rahmatpur, Barisal during rabi seasons of 2007-2008 and 2008-2009.The experiment was laid out in a randomized complete block design (RCBD) with three replications. The unit plot size was 6 m X 4 m. Fertilizers were applied at the rate of 25-160-85-300-5-10 kg/ha of urea, triple supper phosphate, muriate of potash, gypsum, zinc sulphate and borax respectively, as recommended for Bangladesh. One half amount of urea and full dose of all other fertilizers were incorporated into the soil at the time of final land preparation. The remaining urea was top dressed in two equal installments at 35 and 65 days after sowing. During land preparation, cowdung was applied at 10 ton/ha. The seeds were sown at the spacing maintained for groundnut was 30 cm row to row and 15 cm seed to seed distances. The groundnut variety BARI chinabadam-7 were sown in 10 December, 07 and 08. Intercultural operations, such as irrigation was given twice, weeding and mulching were done as and when necessary. Six treatments namely, Zet powder @5g/l, Neem kernal extract(2.5%), neem kernal extract+ Zet powder, Neem oil 5ml/l +Zet powder, Perfecthion 50EC@ 2ml/l and untreated control were evaluated against hairy catterpillar of groundnut under field condition. Three hundred fifty gram (350g) neem seed kernal was crushed and added to 10 litre of water and kept over night and sieved with fine net. Then the solution was ready for spray. Four gram (4g) detergent powder (Zet powder) added to 1 litre of water stirring and sieved with fine net. Four (4) ml neem oil added to 1 litre of water with 4 g zet powder stirring and sieved then the solution was ready for spray. Botanicals and chamical insecticide were applied on February 20, 2008, 2009 at the vegetative and pod formation stage of the crop with the help of knapsack sprayer. Randomly 10 plants were selected per plot for counting Leaf roller of groundnut. Larvae of the leaf roller were counted on leaf and shoot of the plant before 5, 10 and 15 days after spray in all the treatments. The crop was harvested on 25-05-08, 09. Seed yield of different treatments were recorded. Recorded data were compiled and analyzed in the computer package programmee MSTAT-C for Randomized Complete Block Design (RCBD) and mean value were separated by Duncan’s Multiple Range Test (DMRT). Benefit cost ratios (BCR) of different treatments were also calculated.

Source of Information: J. Environ. Sci. & Natural Resources, 3(2): 77-79, 2010; ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Among the treatments as expected Perfecthion 50EC reduced the highest leaf roller (98.61%) with the highest BCR (5.36) followed by Neem kernel extract + Zet powder (25.93%), Neem oil + Zet powder (19.79%). Zet powder (19.23%) and Neem kernel extract (13.10%) recorded at 15 days after spray over the pre-treatment count. Neem kernel extract + Zetpowder gave the second highest BCR (3.71) followed by Zetpowder (3.32), Neem oil+Zetpowder (3.15) and Neem kernel extract (2.8).

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