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Field performance of bio-primed seeds to suppress Colletotrichum truncatum causing damping-off and seedling stand of soybean.

The soybean is prone to be attacked by Colletotrichum truncatum at seed and seedling stages, resulting in pre- and post-emergence damping-off. The efficacy of bio-priming for the control of damping-off of soybean caused by C. truncatum and the final seedling stand using two fungal biocontrol agents...

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Main Authors: Begum, M. M., Meon, Sariah, Puteh, Adam, Mior Ahmad, Zainal Abidin, Rahman, M. A., Siddiqui, Y.
Format: Article
Language:English
English
Published: Elsevier 2010
Online Access:http://psasir.upm.edu.my/id/eprint/14751/1/Field%20performance%20of%20bio.pdf
http://psasir.upm.edu.my/id/eprint/14751/
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spelling my.upm.eprints.147512015-08-28T02:27:22Z http://psasir.upm.edu.my/id/eprint/14751/ Field performance of bio-primed seeds to suppress Colletotrichum truncatum causing damping-off and seedling stand of soybean. Begum, M. M. Meon, Sariah Puteh, Adam Mior Ahmad, Zainal Abidin Rahman, M. A. Siddiqui, Y. The soybean is prone to be attacked by Colletotrichum truncatum at seed and seedling stages, resulting in pre- and post-emergence damping-off. The efficacy of bio-priming for the control of damping-off of soybean caused by C. truncatum and the final seedling stand using two fungal biocontrol agents (BCAs) Trichoderma harzianum and T. virens and one bacterial BCA Pseudomonas aeruginosa was evaluated under field conditions. Treatments consisted of chemo-primed with Benlate® as a positive control; bio-primed with P. aeruginosa; bio-primed with T. harzianum; bio-primed with T. virens; bio-primed with the mixture of T. virens and T. harzianum and the controls as hydro-primed and non-primed seeds. Trichoderma isolates used singly or as a mixture established on the seed surface with germinating hyphae, whereas the strain P. aeruginosa colonized profusely as determined by increased colony forming units (CFU) from 1.2 × 109 to 5.1 × 109 seed−1 after 12 h of bio-priming. All bio-priming treatments significantly reduced pre- and post-emergence damping-off relative to hydro- and non-primed seed controls. In general, bio-priming with P. aeruginosa was the most effective treatment for controlling pre and post-emergence damping-off, with reductions in disease incidence with increases ranging from 48.6% to 51.9% and 65.0% to 97.2%, respectively. Moreover, P. aeruginosa resulted in enhancement of seed germination and healthy seedling stand ranging from 32.4% to 60.0% and 56.0% to 73.9%, respectively. Bio-priming with T. harzianum reduced pre- and post-emergence damping-off by 42.8–46.8% and 35.0–85.1%, respectively. However, P. aeruginosa was generally comparable to T. harzianum and the fungicide Benlate®. The combination treatment of T. harzianum and T. virens produced compareable results to T. harzianum alone, and T. virens was the least effective of the bio-primed treatments. Bio-priming with P. aeruginosa or T. harzianum offered an effective biological seed treatment system and an alternative to the fungicide Benlate® for control of damping-off of soybean caused by C. truncatum of soybean. Elsevier 2010-04 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/14751/1/Field%20performance%20of%20bio.pdf Begum, M. M. and Meon, Sariah and Puteh, Adam and Mior Ahmad, Zainal Abidin and Rahman, M. A. and Siddiqui, Y. (2010) Field performance of bio-primed seeds to suppress Colletotrichum truncatum causing damping-off and seedling stand of soybean. Biological Control, 53 (1). pp. 18-23. ISSN 1049-9644 10.1016/j.biocontrol.2009.12.001 English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description The soybean is prone to be attacked by Colletotrichum truncatum at seed and seedling stages, resulting in pre- and post-emergence damping-off. The efficacy of bio-priming for the control of damping-off of soybean caused by C. truncatum and the final seedling stand using two fungal biocontrol agents (BCAs) Trichoderma harzianum and T. virens and one bacterial BCA Pseudomonas aeruginosa was evaluated under field conditions. Treatments consisted of chemo-primed with Benlate® as a positive control; bio-primed with P. aeruginosa; bio-primed with T. harzianum; bio-primed with T. virens; bio-primed with the mixture of T. virens and T. harzianum and the controls as hydro-primed and non-primed seeds. Trichoderma isolates used singly or as a mixture established on the seed surface with germinating hyphae, whereas the strain P. aeruginosa colonized profusely as determined by increased colony forming units (CFU) from 1.2 × 109 to 5.1 × 109 seed−1 after 12 h of bio-priming. All bio-priming treatments significantly reduced pre- and post-emergence damping-off relative to hydro- and non-primed seed controls. In general, bio-priming with P. aeruginosa was the most effective treatment for controlling pre and post-emergence damping-off, with reductions in disease incidence with increases ranging from 48.6% to 51.9% and 65.0% to 97.2%, respectively. Moreover, P. aeruginosa resulted in enhancement of seed germination and healthy seedling stand ranging from 32.4% to 60.0% and 56.0% to 73.9%, respectively. Bio-priming with T. harzianum reduced pre- and post-emergence damping-off by 42.8–46.8% and 35.0–85.1%, respectively. However, P. aeruginosa was generally comparable to T. harzianum and the fungicide Benlate®. The combination treatment of T. harzianum and T. virens produced compareable results to T. harzianum alone, and T. virens was the least effective of the bio-primed treatments. Bio-priming with P. aeruginosa or T. harzianum offered an effective biological seed treatment system and an alternative to the fungicide Benlate® for control of damping-off of soybean caused by C. truncatum of soybean.
format Article
author Begum, M. M.
Meon, Sariah
Puteh, Adam
Mior Ahmad, Zainal Abidin
Rahman, M. A.
Siddiqui, Y.
spellingShingle Begum, M. M.
Meon, Sariah
Puteh, Adam
Mior Ahmad, Zainal Abidin
Rahman, M. A.
Siddiqui, Y.
Field performance of bio-primed seeds to suppress Colletotrichum truncatum causing damping-off and seedling stand of soybean.
author_facet Begum, M. M.
Meon, Sariah
Puteh, Adam
Mior Ahmad, Zainal Abidin
Rahman, M. A.
Siddiqui, Y.
author_sort Begum, M. M.
title Field performance of bio-primed seeds to suppress Colletotrichum truncatum causing damping-off and seedling stand of soybean.
title_short Field performance of bio-primed seeds to suppress Colletotrichum truncatum causing damping-off and seedling stand of soybean.
title_full Field performance of bio-primed seeds to suppress Colletotrichum truncatum causing damping-off and seedling stand of soybean.
title_fullStr Field performance of bio-primed seeds to suppress Colletotrichum truncatum causing damping-off and seedling stand of soybean.
title_full_unstemmed Field performance of bio-primed seeds to suppress Colletotrichum truncatum causing damping-off and seedling stand of soybean.
title_sort field performance of bio-primed seeds to suppress colletotrichum truncatum causing damping-off and seedling stand of soybean.
publisher Elsevier
publishDate 2010
url http://psasir.upm.edu.my/id/eprint/14751/1/Field%20performance%20of%20bio.pdf
http://psasir.upm.edu.my/id/eprint/14751/
_version_ 1643825727955533824
score 13.211869

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