Soybean (Glycine max L.) Response to Fungicides in the Absence of Disease Pressure

Field studies were conducted during the 2010 and 2011 growing seasons along the Texas Upper Gulf Coast region to study the effects of fungicides on soybean disease development and to evaluate the response of four soybean cultivars to prothioconazole plus trifloxystrobin and pyraclostrobin. In neithe...

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Main Author: W. James Grichar
Format: Article
Language:English
Published: Wiley 2013-01-01
Series:International Journal of Agronomy
Online Access:http://dx.doi.org/10.1155/2013/561370
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author W. James Grichar
author_facet W. James Grichar
author_sort W. James Grichar
collection DOAJ
description Field studies were conducted during the 2010 and 2011 growing seasons along the Texas Upper Gulf Coast region to study the effects of fungicides on soybean disease development and to evaluate the response of four soybean cultivars to prothioconazole plus trifloxystrobin and pyraclostrobin. In neither year did any soybean diseases develop enough to be an issue. Only NKS 51-T8 responded to a fungicide treatment in 2010 while HBK 5025 responded in 2011. Prothioconazole plus trifloxystrobin increased NKS 51-T8 yield by 23% in 2010 while in 2011 the yield of HBK 5025 was increased 14% over the unsprayed check. No yield response was noted with pyraclostrobin on any soybean cultivar. Only prothioconazole + trifloxystrobin applied to either NKS 51-T8 or DP5335 in 2010 resulted in a net increase in dollars per hectare over the unsprayed check of the respective cultivar. In 2011, under extremely dry conditions, all fungicides with the exception of prothioconazole + trifloxystrobin applied to HBK 5025 resulted in a net decrease in returns over the unsprayed check.
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spelling doaj-art-8c70f0a79f4247b584813362b2e1e0932025-02-03T01:31:00ZengWileyInternational Journal of Agronomy1687-81591687-81672013-01-01201310.1155/2013/561370561370Soybean (Glycine max L.) Response to Fungicides in the Absence of Disease PressureW. James Grichar0Texas A&M AgriLife Research and Extension Center, 10345 State Highway 44, Corpus Christi, TX 78406, USAField studies were conducted during the 2010 and 2011 growing seasons along the Texas Upper Gulf Coast region to study the effects of fungicides on soybean disease development and to evaluate the response of four soybean cultivars to prothioconazole plus trifloxystrobin and pyraclostrobin. In neither year did any soybean diseases develop enough to be an issue. Only NKS 51-T8 responded to a fungicide treatment in 2010 while HBK 5025 responded in 2011. Prothioconazole plus trifloxystrobin increased NKS 51-T8 yield by 23% in 2010 while in 2011 the yield of HBK 5025 was increased 14% over the unsprayed check. No yield response was noted with pyraclostrobin on any soybean cultivar. Only prothioconazole + trifloxystrobin applied to either NKS 51-T8 or DP5335 in 2010 resulted in a net increase in dollars per hectare over the unsprayed check of the respective cultivar. In 2011, under extremely dry conditions, all fungicides with the exception of prothioconazole + trifloxystrobin applied to HBK 5025 resulted in a net decrease in returns over the unsprayed check.http://dx.doi.org/10.1155/2013/561370
spellingShingle W. James Grichar
Soybean (Glycine max L.) Response to Fungicides in the Absence of Disease Pressure
International Journal of Agronomy
title Soybean (Glycine max L.) Response to Fungicides in the Absence of Disease Pressure
title_full Soybean (Glycine max L.) Response to Fungicides in the Absence of Disease Pressure
title_fullStr Soybean (Glycine max L.) Response to Fungicides in the Absence of Disease Pressure
title_full_unstemmed Soybean (Glycine max L.) Response to Fungicides in the Absence of Disease Pressure
title_short Soybean (Glycine max L.) Response to Fungicides in the Absence of Disease Pressure
title_sort soybean glycine max l response to fungicides in the absence of disease pressure
url http://dx.doi.org/10.1155/2013/561370
work_keys_str_mv AT wjamesgrichar soybeanglycinemaxlresponsetofungicidesintheabsenceofdiseasepressure