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Response of Promising Mungbean Varieties / Entries Against Flower Thrips and Pod Borers (2017--2018)

MD. ALTAF HOSSAIN
Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

Abstract/ Executive Summary:

Response of promising varieties/entries of mungbean against flower thrips and pod borers were studied at Pulses Research Centre, Ishurdi, Pabna, Bangladesh during Kharif-I, 2018. Flower infestation, thrips population and pod borer infestation varied among the varieties/entries. The lowest flower infestation and thrips population was observed in BARI Mung-7 and the lowest pod borer infestation was observed in BMXK1 07007-4 but the highest yield (1382 kg/ha) was obtained from BINA Mung-5 followed by BMXK1 05008-2(1360 kg/ha).

Keywords: Mungbean, Flower thrips, Pod borers

Location: Pulses Research Centre, Ishurdi, Pabna

Start Date: 00-00-2018

End Date: 00-00-2018

Program Area: Pest Management

Commodity: Insects, Mungbean

Objectives:

The present study has been taken to finding out the more resistant mungbean varieties/entries against flower thrips and pod borers along with grain higher yield.

Methodology:

The experiment was conducted at Pulses Research Center, Ishurdi, Pabna, Bangladesh during Kharif-I 2018. Treatments were ten promising varieties/entries viz., BARI Mung-6, BARI Mung-7, BARI Mung-8, BINA Mung-5, BINA Mung-8, BMXK₁05008-2, BMXK₁07007-4, BMXK₁09012-1, BMXK₁ 08011-2 & MB 08. The experiment was laid out in randomized complete block design with three replications. The treatments (varieties/entries) were randomly allotted in each block. The unit plot size was 3m x 4m with a distance of 1m between the plots and 1.5m between the replications. The seeds of the respective varieties/entries were sown on April 05 in rows with the spacing of 30 cm. The unit plot contains 10 rows x 4m. The plant populations were maintained constant by keeping plant to plant distance 7 cm. Urea, triple super phosphate, muriate of potash and boric acid were applied @ 40-90-40-7.5 kg/ha during final land preparation. Post sowing flood irrigation was done to provide sufficient soil moisture for seed germination to get optimum plant population in all the treatments. The population data for thrips in flowers were collected at the peak flowering stage of the varieties/entries. Thrips population was assessed from 20 opened flowers which were randomly collected from two rows of each side of the plot avoiding border and central four rows. The collected flowers were immediately opened on the white paper board and counted the adult and immature thrips present in the flowers. Central four rows were kept undisturbed for recording yield data. At maturity, all pods were collected from 10 randomly selected plants from the central four rows of each plot and examined. The infested (bored) and total numbers of pods were counted and the percent pod infestation was calculated. The pods of central four rows of each plot comprising a 4.8m²(1.2 x 4m) area were harvested. The pods were then threshed; grains were cleaned and sun-dried. The grains obtained from each plot were converted into kg/ha.

The experimental data were analyzed by Genstat software. The percent infestation data were transformed by square root for statistical analysis. Mean comparisons for treatment parameters were compared using Duncan’s Multiple Range Test at a 5% level of significance.

Source of Information: Annual Research Report 2017-2018, Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Mungbean flower infestation and thrips population varied significantly among the varieties/entries. The lowest percentage of flower infestation (68.33%) was observed in BARI Mung-7 which was statistically identical to the entry MB-08. The rest of the varieties/entries received higher flower infestation which was more or less similar and the highest (95.00%) was in BMXK₁ 07007-4. Thrips population per infested flower also varied among the varieties/entries. The lowest thrips population (2.36/infested flower) was also observed in BARI Mung-7 which was statistically similar to BARI Mung-8, BMXK₁05008-2, BMXK₁07007-4 and BMXK₁09012-1. The highest thrips population (3.52/infested flower) was observed in BARI Mung-6 which was statistically similar to the rest of other varieties/entries. Effect of varieties/entries on pod borer infestation and yield of mungbean: Promising varieties/entries showed a significant effect on the receiving of pod borer infestation. BINA Mung-5 received the highest pod borer infestation (15.57%) and entry BMXK₁07007-4 received the lowest pod borer infestation (11.38%). Rest other entries received statistically similar pod infestation by pod borer. Yield varied significantly depending on the varieties/entries yield potentiality and the level of insect pest infestation. Significantly the highest yield (1382 kg/ha) was recorded from BINA Mung-5 which was statistically identical to the entry BMXK₁05008-2 (1360 kg/ha) followed by BMXK₁08011-2 and BARI Mung-6. The lowest yield (855 kg/ha) was obtained from BINA Mung-8. Flower infestation, thrips population and pod borer infestation varied among the varieties/entries. The lowest flower infestation and thrips population was observed in BARI Mung-7 and the lowest pod borer infestation was observed in BMXK1 07007-4 but the highest yield (1382 kg/ha) was obtained from BINA Mung-5 followed by BMXK1 05008-2 (1360 kg/ha).

Knowledge Management: Report/Proceedings