Combined efficacy assessment of soil solarization and bio-fungicides for management of Sclerotinia spp. in lettuce (Lactuca sativa L.)

<body>  White mould:Sclerotinia spp., is the lettuce main disease in the Colombian high Andes. It causes yield losses of up to 70% and is primarily managed with chemical fungicides, while...

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Main Authors:	Gil Rodrigo, Smith Alexander, Chaves Bernardo, Wyckhuys Kris, Forero Clemencia, Jiménez Jaime
Format:	Article
Language:	English
Published:	Centro Editorial of Facultad de Ciencias Agrarias, Universidad Nacional de Colombia 2009-08-01
Series:	Agronomía Colombiana
Subjects:	high Andean tropics, plant extracts, procymidone, soilborne pathogens, Trichoderma koningiopsis.
Online Access:	http://www.revistas.unal.edu.co/index.php/agrocol/article/view/11148

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spelling	doaj-b4004afad6df441287d563f14a597c4b2020-11-24T23:34:39ZengCentro Editorial of Facultad de Ciencias Agrarias, Universidad Nacional de ColombiaAgronomía Colombiana0120-99652009-08-01272193201Combined efficacy assessment of soil solarization and bio-fungicides for management of <em>Sclerotinia</em> spp. in lettuce (<em>Lactuca sativa</em> L.)Gil RodrigoSmith AlexanderChaves BernardoWyckhuys KrisForero ClemenciaJiménez Jaime<body> <p align="justify"> White mould:<em>Sclerotinia</em> spp., is the lettuce main disease in the Colombian high Andes. It causes yield losses of up to 70% and is primarily managed with chemical fungicides, while alternative control strategies are poorly used. Soil solarization and a set of chemical and bio-fungicides for <em>Sclerotinia</em> management efficacy in lettuce, were determined. Biofungicides included different doses of <em>Allium sativum</em> and <em>Matricaria recutita</em> extracts and <em>Trichoderma koningiopsis</em> suspensions. The fungicide procymidone was also evaluated. Field trials included single or combined treatments application. Non-linear modelling and AUDPC were employed to determine the efficacy of management strategies. Both S. <em>sclerotiorum</em> and S. </em>minor</em> caused white mould, being S. <em> minor</em> the dominant species. Solarization significantly lowered Sclerotia population in the upper soil layers and consequently lowered disease incidence. Highest levels of <em>Sclerotinia</em> control were achieved with solarization, particularly in combination with procymidone or <em>T. Konin giopsis</em> (79.08% and 41.50% disease reduction, respectively). Non-linear modeling of disease epidemic progress curve proved a valuable alternative to AUDPC, which allowed multiple disease development parameters estimation and indirectly the efficacy of management strategies. This work should help the advance of environmentally-sound management of <em>Sclerotina</em> spp. in lettuce, under the highly specific growing conditions of the high Andes.</p> </body>http://www.revistas.unal.edu.co/index.php/agrocol/article/view/11148high Andean tropics, plant extracts, procymidone, soilborne pathogens, Trichoderma koningiopsis.
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Gil Rodrigo Smith Alexander Chaves Bernardo Wyckhuys Kris Forero Clemencia Jiménez Jaime
spellingShingle	Gil Rodrigo Smith Alexander Chaves Bernardo Wyckhuys Kris Forero Clemencia Jiménez Jaime Combined efficacy assessment of soil solarization and bio-fungicides for management of <em>Sclerotinia</em> spp. in lettuce (<em>Lactuca sativa</em> L.) Agronomía Colombiana high Andean tropics, plant extracts, procymidone, soilborne pathogens, Trichoderma koningiopsis.
author_facet	Gil Rodrigo Smith Alexander Chaves Bernardo Wyckhuys Kris Forero Clemencia Jiménez Jaime
author_sort	Gil Rodrigo
title	Combined efficacy assessment of soil solarization and bio-fungicides for management of <em>Sclerotinia</em> spp. in lettuce (<em>Lactuca sativa</em> L.)
title_short	Combined efficacy assessment of soil solarization and bio-fungicides for management of <em>Sclerotinia</em> spp. in lettuce (<em>Lactuca sativa</em> L.)
title_full	Combined efficacy assessment of soil solarization and bio-fungicides for management of <em>Sclerotinia</em> spp. in lettuce (<em>Lactuca sativa</em> L.)
title_fullStr	Combined efficacy assessment of soil solarization and bio-fungicides for management of <em>Sclerotinia</em> spp. in lettuce (<em>Lactuca sativa</em> L.)
title_full_unstemmed	Combined efficacy assessment of soil solarization and bio-fungicides for management of <em>Sclerotinia</em> spp. in lettuce (<em>Lactuca sativa</em> L.)
title_sort	combined efficacy assessment of soil solarization and bio-fungicides for management of <em>sclerotinia</em> spp. in lettuce (<em>lactuca sativa</em> l.)
publisher	Centro Editorial of Facultad de Ciencias Agrarias, Universidad Nacional de Colombia
series	Agronomía Colombiana
issn	0120-9965
publishDate	2009-08-01
description	<body> <p align="justify"> White mould:<em>Sclerotinia</em> spp., is the lettuce main disease in the Colombian high Andes. It causes yield losses of up to 70% and is primarily managed with chemical fungicides, while alternative control strategies are poorly used. Soil solarization and a set of chemical and bio-fungicides for <em>Sclerotinia</em> management efficacy in lettuce, were determined. Biofungicides included different doses of <em>Allium sativum</em> and <em>Matricaria recutita</em> extracts and <em>Trichoderma koningiopsis</em> suspensions. The fungicide procymidone was also evaluated. Field trials included single or combined treatments application. Non-linear modelling and AUDPC were employed to determine the efficacy of management strategies. Both S. <em>sclerotiorum</em> and S. </em>minor</em> caused white mould, being S. <em> minor</em> the dominant species. Solarization significantly lowered Sclerotia population in the upper soil layers and consequently lowered disease incidence. Highest levels of <em>Sclerotinia</em> control were achieved with solarization, particularly in combination with procymidone or <em>T. Konin giopsis</em> (79.08% and 41.50% disease reduction, respectively). Non-linear modeling of disease epidemic progress curve proved a valuable alternative to AUDPC, which allowed multiple disease development parameters estimation and indirectly the efficacy of management strategies. This work should help the advance of environmentally-sound management of <em>Sclerotina</em> spp. in lettuce, under the highly specific growing conditions of the high Andes.</p> </body>
topic	high Andean tropics, plant extracts, procymidone, soilborne pathogens, Trichoderma koningiopsis.
url	http://www.revistas.unal.edu.co/index.php/agrocol/article/view/11148
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Combined efficacy assessment of soil solarization and bio-fungicides for management of &lt;em&gt;Sclerotinia&lt;/em&gt; spp. in lettuce (&lt;em&gt;Lactuca sativa&lt;/em&gt; L.)

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Combined efficacy assessment of soil solarization and bio-fungicides for management of <em>Sclerotinia</em> spp. in lettuce (<em>Lactuca sativa</em> L.)