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Management of Thrips in Groundnut Using Botanical and Chemical Controlling Agent

M.A. Monim
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Jamalpur

M.S. Rahaman
McDonald Bangladesh (Pvt.). Ltd. Dhaka

M.N. Haque
Agricultural Research Station, Bangladesh Agricultural Research Institute, Comilla;

G.M. Bari
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Jessore

N.A. Sultana
Oilseed Research centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur.

Abstract/ Executive Summary:

The experiment was carried out at the field of the Oilseed Research Centre, Regional Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Jamalpur, during December to May of 2009-2010 and 2010-2011 to save the crop, it is necessary to control the thrips adopting different control measures. Efficacy of different botanical and chemicals practices namely zet powder, biskatali dust extract, neem kernel extract, neem oil and two chemical insecticides Ripcord 10EC, Diazinon 60EC and their integration was designed against thrips (Scirtothrips dorsalis) of groundnut under natural field condition. It was found that the highest thrips (Scirtothrips dorsalis) was 290 per plant observed in the 2nd week of April in 2010, 2011. Among the treatments, Diazinon 60EC and Ripcord 10EC reduced the highest thrips population (99.58%) and (99.44% ) with the highest BCR (5.69 and 5.56) followed by Neem kernel extract + Zet powder (54.06%), Neem oil + Zet powder (48.62%) Neemkernel extract (2.5%) + Biskatali dust extract 53.83%), and Zet powder (46.82%) recorded at 15 days after spray over the pre-treatment count. Neem kernel extract + Zetpowder gave the second highest BCR (4.76) followed by, Neem oil +Zet powder (4.29), Neem kernel extract (2.5%) + Biskatali dust extract (3.88) and Zetpowder (3.32).

Keywords: Management, Practices, Thrips, Groundnut, Botanical and Chemical agent

Location: Oilseed Research Centre, Regional Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Jamalpur

Start Date: 00-12-2009

End Date: 00-05-2011

Program Area: Pest Management

Commodity: Ground nut

Objectives:

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

Methodology:

The experiment was conducted in the field of the Oilseed Research Centre, Regional Agricultural Research station, Bangladesh Agricultural Research Institute (BARI), Jamalpur during the month of December to May of 2009-2010 and 2010-2011. The experiment was laid out in a well-prepared land, following randomized complete block design (RCBD) with three replications. The unit plot size was 4m X 3m. 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-8 were sown in 10 December, 2009 and 2010. Intercultural operations, such as irrigation was given twice, weeding and mulching were done as and when necessary as per recommendation of Mondall and wahhab (2000). Seven treatments namely, Zet powder @5g/l, Neem kernal extract(2.5%) + Biskatali dust extract, neem kernal extract+ Zet powder, Neem oil 5ml/l +Zet powder, Diazinon 60EC@ 1ml/l, Ripcod 10EC@ 1ml/l and untreated control were evaluated against thrips of groundnut under field condition. Three hundred fifty gram (350g) neem seed kernel and five hundred grams (500g) biskatali dust were crushed and added to 10 litre of water and kept overnight 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 chemical insecticide were applied on March 10, 2010, 2011 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 thrips populations of groundnut. Both adult and nymph populations 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 25-05-10, 11. Seed yield of different treatments were recorded. Recorded data were compiled and analyzed in the computer package program 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. Agrofor. Environ. 8 (2): 39-41, 2014; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It was found that the highest thrips (Scirtothrips dorsalis) was 290 per plant observed in the 2nd week of April in 2010, 2011. Among the treatments, Diazinon 60EC and Ripcord 10EC reduced the highest thrips population (99.58%) and (99.44% ) with the highest BCR (5.69 and 5.56) followed by Neem kernel extract + Zet powder (54.06%), Neem oil + Zet powder (48.62%) Neemkernel extract (2.5%) + Biskatali dust extract 53.83%), and Zet powder (46.82%) recorded at 15 days after spray over the pre-treatment count. Neem kernel extract + Zetpowder gave the second highest BCR (4.76) followed by, Neem oil +Zet powder (4.29), Neem kernel extract (2.5%) + Biskatali dust extract (3.88) and Zetpowder (3.32).

Knowledge Management: Journal