Applying non-fumigant combinations to a buffer zone

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Applying non-fumigant combinations to a buffer
zone

• Oleg Daugovish, Anna Howell (UCCE-Ventura)
• Steve Fennimore, Krishna Subbarao, Tom Gordon
  (UC-Davis)

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Macrophomina phaseolina
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Fusarium oxysporum
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NON-FUMIGANT COMBINATIONS

• Mustard Solar
• Mustard Steam
• Steam Solar

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Mustard seed meal 2,000 lbs /a
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140ºF at 12
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Nov 29, 2010
Untreated
MustardSteam
MustardSolar
SolarSteam
9
a
a
a
- 35
b
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MustardSteam
Untreated
1 March 2011
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SolarMustard
SolarSteam
1 March 2011
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a
a
a
42 lt rest
b
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a
ab
a
38 lt rest
b
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Marketable fruit yield
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• SolarMustard

Untreated
19 April 2011
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• Steam Mustard

Steam Solar
19 April 2011
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Mortality
a
a
a
a
a
a
a
a
b
a
b
b


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End of the season mortality images June 2, 2011
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Untreated /clear
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Untreated / black
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Solar Steam
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Solar Mustard
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Steam Mustard
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Fumigated / Black
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Fumigated / Skunk
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Nonfumigant combinations

• Did not eliminate fungal pathogens but may reduce
  their abundance in soil
• Improve plant vigor and productivity
• Economics?
• Clear mulch Earlier and greater
• yield
• disease development and severity

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Acknowledgements

• Andy Hooper and Terri Farms
• CSC and USDA funding