Pre- and post-infection activity of new fungicides against Botrytis cinérea and other fungi causing decay of table grapes

Pre- and post-harvest diseases restrict table grape production and exports (Vitis vinifera L.) in Chile, with the most important disease being grey mold (Botrytis cinérea). In addition, rot due to Aspergillus niger, Cladosporium herbarum, Penicillium expansum, and Rhizopus stolonifer frequently occu...

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Autores principales:	Serey,Ricardo A, Torres,Rene, Latorre,Bernardo A
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2007
Materias:	Blue mold curative activity gray mold protection activity sour rot Vitis vinifera
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202007000300005
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spelling	oai:scielo:S0718-162020070003000052008-03-07Pre- and post-infection activity of new fungicides against Botrytis cinérea and other fungi causing decay of table grapesSerey,Ricardo ATorres,ReneLatorre,Bernardo A Blue mold curative activity gray mold protection activity sour rot Vitis vinifera Pre- and post-harvest diseases restrict table grape production and exports (Vitis vinifera L.) in Chile, with the most important disease being grey mold (Botrytis cinérea). In addition, rot due to Aspergillus niger, Cladosporium herbarum, Penicillium expansum, and Rhizopus stolonifer frequently occurs. The pre- and post-infection activity of fungicides against these pathogens was studied on Thompson Seedless table grapes. Detached, mature, berries were used, and inoculations were performed with 20 µL of a 10(6) sporesmL-1 suspension placed on three punctures aseptically made at the calyx end of each berry. Fungicides used (per liter) were boscalid (600 mg), boscalid (200 mg) + pyraclostrobin (100 mg), boscalid (200 mg) + kresoxim methyl (100 mg), cyprodinil (60 mg) + fludioxonil (40 mg), BAS 600 KBF (100 mg) + metrafenone (150 mg), BAS 600 KBF (200 mg) + boscalid (300 mg), BAS 600 KBF (100 mg) + pyraclostrobin (100 mg), and captan (400 mg). Each fungicide was applied either by drop (12 µL-berry-1) placed on three punctures made with a sterile hypodermic needle or by 60 s immersion. Berries were then incubated in humid chambers at 20°C The pre-infection (protection) activity of the fungicides varied considerably among the pathogens tested and was found to be significant (p < 0.001) and, with one exception (A. niger), it was significantly (p < 0.002) affected by the application method. The interaction between fungicide and application method was only significant (p < 0.001) for R. stolonifer at 48 h post treatment. In general, pre-infection activity gave 0 to 4 days protection after drop applications and 0 to 21 days after immersion treatments. The post-infection (curative) activity varied among pathogens and fungicide treatments. However, it was always below 24info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.34 n.3 20072007-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202007000300005en10.4067/S0718-16202007000300005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Blue mold curative activity gray mold protection activity sour rot Vitis vinifera
spellingShingle	Blue mold curative activity gray mold protection activity sour rot Vitis vinifera Serey,Ricardo A Torres,Rene Latorre,Bernardo A Pre- and post-infection activity of new fungicides against Botrytis cinérea and other fungi causing decay of table grapes
description	Pre- and post-harvest diseases restrict table grape production and exports (Vitis vinifera L.) in Chile, with the most important disease being grey mold (Botrytis cinérea). In addition, rot due to Aspergillus niger, Cladosporium herbarum, Penicillium expansum, and Rhizopus stolonifer frequently occurs. The pre- and post-infection activity of fungicides against these pathogens was studied on Thompson Seedless table grapes. Detached, mature, berries were used, and inoculations were performed with 20 µL of a 10(6) sporesmL-1 suspension placed on three punctures aseptically made at the calyx end of each berry. Fungicides used (per liter) were boscalid (600 mg), boscalid (200 mg) + pyraclostrobin (100 mg), boscalid (200 mg) + kresoxim methyl (100 mg), cyprodinil (60 mg) + fludioxonil (40 mg), BAS 600 KBF (100 mg) + metrafenone (150 mg), BAS 600 KBF (200 mg) + boscalid (300 mg), BAS 600 KBF (100 mg) + pyraclostrobin (100 mg), and captan (400 mg). Each fungicide was applied either by drop (12 µL-berry-1) placed on three punctures made with a sterile hypodermic needle or by 60 s immersion. Berries were then incubated in humid chambers at 20°C The pre-infection (protection) activity of the fungicides varied considerably among the pathogens tested and was found to be significant (p < 0.001) and, with one exception (A. niger), it was significantly (p < 0.002) affected by the application method. The interaction between fungicide and application method was only significant (p < 0.001) for R. stolonifer at 48 h post treatment. In general, pre-infection activity gave 0 to 4 days protection after drop applications and 0 to 21 days after immersion treatments. The post-infection (curative) activity varied among pathogens and fungicide treatments. However, it was always below 24
author	Serey,Ricardo A Torres,Rene Latorre,Bernardo A
author_facet	Serey,Ricardo A Torres,Rene Latorre,Bernardo A
author_sort	Serey,Ricardo A
title	Pre- and post-infection activity of new fungicides against Botrytis cinérea and other fungi causing decay of table grapes
title_short	Pre- and post-infection activity of new fungicides against Botrytis cinérea and other fungi causing decay of table grapes
title_full	Pre- and post-infection activity of new fungicides against Botrytis cinérea and other fungi causing decay of table grapes
title_fullStr	Pre- and post-infection activity of new fungicides against Botrytis cinérea and other fungi causing decay of table grapes
title_full_unstemmed	Pre- and post-infection activity of new fungicides against Botrytis cinérea and other fungi causing decay of table grapes
title_sort	pre- and post-infection activity of new fungicides against botrytis cinérea and other fungi causing decay of table grapes
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2007
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202007000300005
work_keys_str_mv	AT sereyricardoa preandpostinfectionactivityofnewfungicidesagainstbotrytiscinereaandotherfungicausingdecayoftablegrapes AT torresrene preandpostinfectionactivityofnewfungicidesagainstbotrytiscinereaandotherfungicausingdecayoftablegrapes AT latorrebernardoa preandpostinfectionactivityofnewfungicidesagainstbotrytiscinereaandotherfungicausingdecayoftablegrapes
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Pre- and post-infection activity of new fungicides against Botrytis cinérea and other fungi causing decay of table grapes

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