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Nematode Models for Vydate Application
Model for potential risk of late blight

Last Update: 7/24/2010 16:34
Late Blight model for the last week and forcasted week.
Weather conditions up to this time have not been conducive to Late Blight in any of the
regions of the Valley.
NOTE: The effective current and forecasted dates for the Blanca Station may be offset from the dates of the other 4 locations.
West/Central SLV
Date Rain-Favorable Days Severity Warning
Consecutive In last 7 days Unit Cumulative  
PREVIOUS 7/15/2010 2 3 0 0 None
7/16/2010 3 4 2 2 None
7/17/2010 4 4 0 2 None
7/18/2010 0 4 0 2 None
7/19/2010 1 5 0 2 None
7/20/2010 2 6 0 2 None
7/21/2010 3 6 0 2 None
FORECAST 7/22/2010 4 6 0 2 None
7/23/2010 5 6 0 2 None
7/24/2010 6 6 0 2 None
7/25/2010 7 7 0 2 None
7/26/2010 8 7 0 2 None
7/27/2010 9 7 0 2 None
7/28/2010 10 7 0 2 Blight Triggered
East SLV
Date Rain-Favorable Days Severity Warning
Consecutive In last 7 days Unit Cumulative  
PREVIOUS 7/15/2010 2 3 0 2 None
7/16/2010 3 4 0 2 None
7/17/2010 4 4 0 2 None
7/18/2010 0 4 0 2 None
7/19/2010 1 5 0 2 None
7/20/2010 2 6 3 5 None
7/21/2010 3 6 0 5 None
FORECAST 7/22/2010 4 6 0 5 None
7/23/2010 5 6 0 5 None
7/24/2010 6 6 0 5 None
7/25/2010 7 7 0 5 None
7/26/2010 8 7 0 5 None
7/27/2010 9 7 0 5 None
7/28/2010 10 7 0 5 Blight Triggered
North SLV
Date Rain-Favorable Days Severity Warning
Consecutive In last 7 days Unit Cumulative  
PREVIOUS 7/15/2010 2 3 0 0 None
7/16/2010 3 4 2 2 None
7/17/2010 4 4 0 2 None
7/18/2010 0 4 0 2 None
7/19/2010 1 5 0 2 None
7/20/2010 2 6 0 2 None
7/21/2010 3 6 0 2 None
FORECAST 7/22/2010 4 6 0 2 None
7/23/2010 5 6 0 2 None
7/24/2010 6 6 0 2 None
7/25/2010 7 7 0 2 None
7/26/2010 8 7 0 2 None
7/27/2010 9 7 0 2 None
7/28/2010 10 7 0 2 Blight Triggered
Carmel SLV
Date Rain-Favorable Days Severity Warning
Consecutive In last 7 days Unit Cumulative  
PREVIOUS 7/15/2010 2 3 0 7 None
7/16/2010 3 4 0 7 None
7/17/2010 4 4 0 7 None
7/18/2010 0 4 2 9 None
7/19/2010 1 5 0 9 None
7/20/2010 2 6 2 11 None
7/21/2010 3 6 0 11 None
FORECAST 7/22/2010 4 6 0 11 None
7/23/2010 5 6 0 11 None
7/24/2010 6 6 0 11 None
7/25/2010 7 7 0 11 None
7/26/2010 8 7 0 11 None
7/27/2010 9 7 0 11 None
7/28/2010 10 7 0 11 Blight Triggered
Blanca SLV
Date Rain-Favorable Days Severity Warning
Consecutive In last 7 days Unit Cumulative  
PREVIOUS 7/17/2010 1 4 0 6 None
7/18/2010 2 5 2 8  
7/19/2010 3 5 0 8  
7/20/2010 0 5 0 8  
7/21/2010 0 4 2 10  
7/22/2010 0 3 0 10  
7/23/2010 0 3 0 10  
FORECAST 7/24/2010 0 2 0 10 None
7/25/2010 1 2 0 10  
7/26/2010 2 2 0 10  
7/27/2010 0 2 0 10  
7/28/2010 1 3 0 10  
7/29/2010 2 4 0 10  
7/30/2010 3 5 0 10  
Weather conditions have been conducive for Late Blight at either 18 severity units or 10
consecutive rain-favorable days.
Spray warnings are the result of further accumulation of rain-favorable days and severity
values.
Hyre Model:
Initial: 10 consecutive rain favorable days
Spray: 5 days of 7 are rain favorable days
Rain-Favorable: 1.2 in. rain in last 10 days and temperature below 78
Wallin Model:
Initial: Cumulative severity value over 18
Severity Value: Based on hours above 90% RH and Average Temp


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