Today, I discussed the intricacies of rating plots for turf quality with Dr. Richardson. This is a subjective rating and all raters would rate differently based on the individuals criteria. Since we are working on a bentgrass putting green situation, density and uniformity will be the crucial criteria within turf quality ratings. We also believe that these two characteristics will be the ones that are altered with our treatments.
Just wanted to write out some of the basic rules/thoughts that will help my rating skills.
1. Best to rate plots on cloudy days whenever possible. If I have to rate plots on a sunny day, be sure to stand with the sun to my back (cast shadow toward plots being rated).
2. Don't wear sunglasses when rating plots
3. Go with an initial thought and rating at first glance; Don't over think it!
4. If rating for color it is best to rate this from a distance.
At this point, there are few differences in the treatments because temperatures have not began creeping upward that would help differentiate treatments. We did see some potential differences in plots that were rolled 6 days a week. They appeared slightly less dense when comparing to other rolling treatments. This was a consistent observations in many of the plots. Also, the higher mowing height appeared more "splotchy" due to the increased leaf area. This observation compared to the lower mowing height where turf was relatively tight with higher density and finer leaf texture.
To help better separate plots color, digital images were obtained using the light box. Two images were collected in each plot and data will be averaged for the two images. Once plots are split and traffic treatments are being applied, a single image of each plot will most likely be obtained.
Thursday, June 17, 2010
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