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Evaluation of Some Chickpea Mutants and Varieties Against Cutworm and Pod Borer at Two Locations of Bangladesh

M. H. Imam
Executive Officer
Janata Bank Limited, Charpara Branch, Mymensingh, Bangladesh

M. J. Alam
Entomology Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh, Bangladesh

M. M. Uddin
Associate Professor
Department of Entomology, Bangladesh Agricultural University, Mymensingh, Bangladesh

M. L. R. Mollah
Entomology Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh, Bangladesh

M. M. Kamal
MS Student
Department of Entomology, Bangladesh Agricultural University, Mymensingh, Bangladesh

Abstract/ Executive Summary:

Field trials on chickpea genotypes (P-70, CPC-830, BARI Chola-5 and Binasola-4) were conducted at two locations (Rajshahi and Jamalpur) of Bangladesh under pesticide free field conditions to find out their resistance or susceptibility against cutworm and pod borer infestation. The genotypes were different, considering physiomorphic characters at both the locations. The highest number of branch plant^-1 was observed on CPC-860 (9.01) and the lowest was on P-70 (8.51) at 35 days after sowing (DAS). The highest trichome density cm^-2 of pod shell was observed on CPC-860 (238.33) and the lowest was on Binasola-4 (185.16). Number of cut plant by cutworm did not vary significantly among the genotypes. However, the highest number of cut plant was observed on P-70 (8.33) and the lowest was on CPC-860 (7.33) and Binasola-4 (7.33) at 30 days after sowing. Total pods plant^-1 were not significantly different among the genotypes. The percentage of pod infestation varied significantly among the different genotypes. The highest percentage of pod infestation was observed on P-70 (10.91%) and the lowest was on CPC-860 (7.08%). Hundred seed weight and seed yield varied significantly among the genotypes. The highest 100 seed weight was observed in CPC-860 (26.56 g) in Jamalpur and the lowest was on Binasola-4 (12.93 g) in Rajshahi. Similarly, the highest seed yield was obtained from CPC-860 (1904 kg ha^-1) in Jamalpur and the lowest was from Binasola-4 (1552 kg ha^-1) Rajshahi. Positive and significant relationship of pod borer infestation with the number of branch plant^-1 was observed but negative relationship was found with the number of trichome on pod shells. Thus, the results clearly suggested that chickpea pod borer infestation increased with the increase of total branch plant^-1, while the higher number of trichome on pod shell reduced the pod borer infestation. However, CPC-860 was found as the best one against cutworm and pod borer infestation.

Keywords: Cutworm, Pod borer, Chickpea genotypes

Location: Rajshahi and Jamalpur district.

Start Date: 00-11-2011

End Date: 00-04-2012

Program Area: Pest Management

Non-commodity: Performance

Objectives:

1. To determine the possible variation of cutworm and pod borer infestation on some chickpea genotypes grown at two locations (Rajshahi and Jamalpur) of Bangladesh;

2. To identify the resistant or tolerant chickpea genotypes or varieties against cutworm and pod borer.

Methodology:

The experiment was conducted at farmer’s field in Godagari under the district of Rajshahi and substation farm of BINA located at sadar upzila under the district of Jamalpur during the period from November 2011 to April 2012. The land of the experimental fields at both locations was ploughed with the power tiller followed by laddering to obtain desirable tilth. Whole experimental land was divided into unit plots maintaining the desired spacing. The size of the unit plot was 5 m length and 4 m width. Block to block and plot to plot distances were 1.0 m and 0.5 m, respectively. Total area of a whole experimental field was 240 m². The experiment was conducted in randomized complete block design (RCBD) with 3 replications at both the locations of Rajshahi and Jamalpur. Two mutants (P-70 and CPC-830) and two check varieties (Binasola-4 and BARI Chola-5) were used to study their resistance or susceptibility against cutworms and pod borer. Seeds of all varieties and mutants were collected from Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh. Germination test was performed in the laboratory before sowing the seeds in the field. The seeds were sown in rows maintaining row to row and seed to seed 30 cm and 15 cm distance, respectively having two seeds in each point. All the necessary intercultural operations were done as and when required. Number of cut plant by cutworm plot-1 at 25 DAS and 30 DAS were counted at the both locations. Before harvesting the crops, 10 representative plant samples from each plot were collected separately, tagged properly and brought to the laboratory for further observations. The plots were harvested separately at about 80% pod maturity. The maturity dates were different among the varieties and mutants. The dates of maturity ranged from 116-125 days. The harvested crops were brought to the threshing floor and dried in the sun properly. The seeds were threshed out of the pod with the help of hands and stick. Seed and straw yield was recorded plot wise after drying. After the collection of plant samples of different genotypes from the experimental field, the following physiomorphic parameters were studied in the laboratories. Yield and yield attributes of chickpea genotypes and varieties, percent of alive plants, percent of dead plants, number of leaves branch^-1, number of branch plant^-1, number of flower plant^-1, number of pod plant^-1, number of pod infestation plant^-1, percent pod infestation, trichomes density cm^-2 pod shell, 100 grain weight (g) and yield (kg ha^-1) were determined. Analysis of variance was done with the help of computer package MSTAT-C developed. The mean comparisons of the treatments were evaluated by DMRT (Duncan's Multiple Range Test) to indicate the level of significance.

Source of Information: Bangladesh J. Nuclear Agric. 27 & 28: 73-82, 2013

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The findings of the experiment was conducted that no chickpea genotypes were 100% resistant against cutworm and pod borer infestations. However, CPC-860 showed the highest performance regarding leaf plant^-1, branch plant^-1, trichome density on pod surface and yield and the lowest cut plant by cutworm plot^-1 and per cent pod infestation. Further, research with these chickpea genotypes at some more locations of Bangladesh and also at artificial conditions might be done for confirmation of the achieved results.

Knowledge Management: Journal