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Integrated suppressive effect of micronutrients and compost against chickpea Fusarium wilt in relation to microbial activity
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Abstract: Two micronutrients, manganese and zinc sulphate used as seed treatment and compost used as soil amendement to study their effiency against Fusarium wilt disease of chickpea plants caused by Fusarium oxysporum f.sp.ciceri. In vitro among 21 isolates of bacteria isolated from compost extract, five isolates belonging to genus Bacillus recorded linear growth of F. oxysporum on PDA medium. Supplying the medium with zinc or manganese sulphate increased antagonistic activity of the tested bacteria. Application of micronutrient and compost alone or in combination effectively reduced wilt diseases incidence under greenhouse and field conditions (seasons 2010/2011 and 2011/2012), Combined applications recorded maximum reduction. The reduction in disease incidence was associated with a rapied accumulation of salicylic acid content in chickpea roots compared to untreated- unamended control. Combined application was superior. Higher salicylic acid content caused lower disease incidence. Also, microbial activity in the rhizosphere of chickpea plants markedly increased as a result of application of micronutrients alone or combined with compost. Combined application recorded the highest increase and microbial activity. Beside the reduction in disease incidence, application of micronutrients and compost increased crop parameters of chickpea plants as well as seed protein content compared to untreated-unamended control.
Keywords:-Chickpea, Fusarium wilt disease, Micronutrients,Compost, Microbial activity, Seed yield, Protein.
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| Publication year |
2014
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| Pages |
159-177
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| Organization Name |
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| Country |
Egypt
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| serial title |
Egyptian Journal of Phytopathology
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| Volume |
42
. 1
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| Author(s) from ARC |
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| Agris Categories |
Plant diseases
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| Publication Type |
Journal
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