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Yield Loss Assessment of Chickpea Caused by Botrytis Gray Mold Through Fungicide Spray

M H Rashid
PSO
BARI, Rahmatpur, Barisal

Dr. M. A. Kashem
Principal Scientific Officer
Plant Pathology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202

Abstract/ Executive Summary:

An experiment was conducted to assess the yield loss of chickpea caused by Botrytis gray moldthrough fungicide spray at Pulses Research Centre, Bangladesh Agricultural Research Institute, Ishurdi, Pabna. Sixteen entries were evaluated following RCB design with three replications. Out of 16 tested germplasms, eight germplasms (92040*52, FLIP97-530 CLIMS, 94-012*98V4006, FLIP98-106C, Gully, FLIP94-509C, 97020-1489 and S95425) showed resistant reaction, while eight and one entries showed susceptible and highly susceptible, respectably, in fungicide sprayed plot. The highest yield increase over BGM inoculated plot were observed in BARWON*98CIH4007 (180.49%) and 97020-1489 (157.96%). The lowest yield increase over BGM inoculated plot were recorded in HEERA*98CZH4010 (6.39%) and 94-012*98V4006 (8.93%) genotypes.

Keywords: Yield loss assessment, Chickpea, Botrytis gray mold, Fungicide

Location: Bangladesh Agricultural Research Institute, Ishurdi, Pabna

Start Date: 21-11-2008

End Date: 15-07-2009

Program Area: Pest Management

Commodity: Chickpea

Objectives:

To find out the yield loss assessment of chickpea caused by Botrytis gray mold.To find out the yield loss assessment of chickpea caused by Botrytis gray mold.

Methodology:

Sixteen entries of chickpea were evaluated under this trial. The experiment was conducted following Randomized Complete Block Design with three replications.Fungicide (Bavistin@0.1%)was sprayed. A BGM susceptible variety ‘Nabin’ was used as check. The entries were sown on November 21, 2008 in 2m long single row plot allowing 50cm x 10cm spacing. The seeds were treated with suitable rhizobium strain to ensure nodulation. Germination, plant stand and crop growth was normal. Bavistin was sprayed at 3 weeks after emergence. Subsequent applications were done at 14 days interval until first flower. From first flowering, fungicide was applied at 7 days interval until maturity. Application of mist irrigation was initiated after 75 days of sowing. Mist irrigation was applied each time for 30 minutes, 5 times a day with an interval of 2 hours starting from 10 am to ensure high humidity for disease development. Plant debris and BGM inoculum (1x10⁵conidia/ml) were applied in this nursery at the flowering stage. Data on disease score was recorded three times with a 1-9 disease scoring scale where, 1= No disease and 9 = Lesions very common on all plants; stem girdling on more than 50% plants; death of most plants; damage more than 75% (Singh, 1999). Data on disease severity of BGM (1-9 scale) and grain yield were recorded. Other intercultural operation like mulching, weeding were done as and when necessary. Insecticide ‘Decis’ (0.02%) was applied for controlling pod borer of chickpea. Data were analyzed statically following Duncan’s Multiple Range Test according to Gomez and Gomez (1984).

Source of Information: life science journal 10(4):3001-3004, 2013

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The highest yield increase over BGM inoculated plot were observed in BARWON*98CIH4007 (180.49%) and 97020-1489 (157.96%). The lowest yield increase over BGM inoculated plot were recorded in HEERA*98CZH4010 (6.39 %,) and 94-012*98V4006 (8.93%) genotypes. Highest yield loss was found in BARWON*98CIH4007 (64.35%) followed by 97020-1489 (61.23%) and lowest yield loss was observed in HEERA*98CZH4010 (6.01%) followed by 94-012*98V4006 (8.20%).

Knowledge Management: Journal