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INTEGRATED MANAGEMENT OF Fusarium WILT OF CHICKPEA (Cicer arietinum L.)

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Title INTEGRATED MANAGEMENT OF Fusarium WILT OF CHICKPEA (Cicer arietinum L.)
 
Creator ARUNODHAYAM, K
 
Contributor ESWARA REDDY, N.P.
 
Subject fungi, diseases, fusarium oxysporum, planting, chickpeas, biochemical compounds, fungicides, biological development, vegetative propagation, bacteria
 
Description Chickpea (Cicer arietinum L.) is the world’s third most important pulse crop, after dry beans (Phaseolus vulgaris) and dry peas (Pisum sativum L.) – (Vishwadhar and Gurha, 1998). Wilt is one of the major diseases of chickpea and at national level the yield losses encountered due to Fusarium wilt was reported to the tune of 60 per cent (Singh et al., 2007).
A detailed study was carried at “Department of Plant Pathology, S.V. Agricultural College, ANGRAU, Tirupati” on isolation of the pathogen and establishment of pathogenicity of Fusarium oxysporum f. sp. ciceris. Potential fungicidal compatible bacteria and fungi antagonistic to Fusarium oxysporum f. sp. ciceris were isolated from the chickpea rhizosphere soil and roots. The integrated disease management (IDM) of Fusarium oxysporum f. sp. ciceris was carried.
The Pathogen was isolated from infected plant showing typical wilt symptoms viz., yellowing of leaves, withering and drying of the plants, purified and identified as Fusarium oxysporum f. sp. ciceris.
A total of 35 antagonistic microflora (24 bacteria and 11 fungi) were obtained from rhizosphere soil and root endophytes from chickpea. Among
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the 24 bacterial isolates CPB-10 inhibited the growth of Fusarium oxysporum f. sp. ciceris to the extent of 87.34 per cent followed by CPB-11 (83.54%) and CPB-12 (83.54%). Among 11 fungal isolates, CPF-1 inhibited the growth of Fusarium oxysporum f. sp. ciceris to the extent of 88.60 per cent.
Among all the fungicides that were tested hexaconazole (0.20%), copper oxychloride (0.25%), tebuconazole (0.20%), propiconazole (0.10%) and mancozeb (0.20%), tebuconazole (0.20%) showed 98.73 per cent inhibition of mycelial growth followed by propiconazole (0.10%) which showed 92.40 per cent inhibition. Whereas the fungicide mancozeb (0.20%) gave 82.27 per cent inhibition.
Different fungicides were tested under in vitro for compatibility with potential biocontrol agents viz., CPB-10, and CPF-1. With CPB-10 propiconazole was found to be highest compatible (82.80%) followed by tebuconazole (75.27%), the less compatibility was recorded in case of copper oxychloride (31.72%). In case of CPF-1mancozeb was found to be highest compatible (38.56%) followed by copper oxychloride (24.13%), tebuconazole (4.03%) and hexaconazole (1.53%). Least compatibility was recorded with propiconazole (0.00%).
The efficacy of potential biocontrol agents (CPB-10), (CPF-1) compatible fungicide (tebuconazole), neem cake, vermicompost and farm yard manure was tested in pot culture against Fusarium wilt of chickpea. The results revealed that treatment T12 (soil application of biocontrol agents + soil application of neem cake) was superior in reducing per cent disease incidence (20.46%) and increasing plant growth parameters, like shoot length, root length and dry weight of both shoot and root when compared to other treatments.
 
Date 2016-06-17T10:35:24Z
2016-06-17T10:35:24Z
2012
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/67505
 
Language en
 
Relation D9362;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY