WSU CAHNRS

Washington State University

Potatoes at WSU

Results 2007

 

2007 Postharvest Evaluations


Summer Postharvest Potato Evaluations

Red & Specialty Trial

Early Tri-State

Early Regional Trial

 


 


Fall/Winter Postharvest Potato Evaluations

2007 Growing Season Temperatures 
The new specific gravity rating scale has been used again this year, reflecting the changes in industry grower contracts. All other evaluation rating scales and methods are the same as shown on the home page.

    The new scale is as follows:

  • 5 = 1.083 – 1.088
  • 4 = 1.081 – 1.082 & 1.089 – 1.091
  • 3 = 1.080 & 1.092 – 1.093
  • 2 = 1.078 – 1.079 & 1.094 – 1.095
  • 1 = 1.076 – 1.077 & 1.096 or higher
  • 0 = 1.075 or lower

In addition to our percentage of black spot bruise we have added a color rating scheme this year. The bruises that rate 3, 4 or 5 are used in the percentage calculation. The color columns are an average of all impacts

    The rating system is as follows:

  • 1 = No bruise
  • 2 = White Knot bruise
  • 3 = Less than 50% of the impact area darkened
  • 4 = Greater than 50% of the impact area darkened or the whole area is light brown
  • 5 = Full impact area is dark

 


Late Harvest Tri-State Evaluations

 

 


Late Harvest Regional Trial Evaluations

Potatoes at WSU, PO Box 646414, Washington State University, Pullman WA 99164-6414, 509-335-9502
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