I just added a spare Qsoil to base in a plot that I will water. My goal is to characterize the behavior of an EC-5 probe in this soil with high iron content. Hopefully, it will still have a slope of 1, but just an offset. Although the soil structure changes a bit from site-to-site here, the iron content appears (based on my magnet test) to be about the same at base as at near, so I am optimistic that these test results will be relevant to the other sites.
The plan is simply to water this plot to field capacity and watch it dry out, while taking gravimetric samples regularly -- at least daily.
15:00 took the first sample (still before wetting; soil was a little bit moist). I'll just measure the 3-6cm ring, as being close to the location of the EC5 (volume = 3*pi*(5.31/2)^2 )
10/25: 09:35 First watering. Water ponded. I'll wait a bit and reapply.
09:45 Second watering. EC5 still hasn't seen it.
10:00 Water #3. EC5 still hasn't seen it.
10:15 Water #4. EC5 noticeably rising.
10:45 Water #5. EC5 up quite a bit.
Date |
Time |
Tare |
Wet |
Dry |
Rho |
Grav% |
Vol% |
EC-5 |
|---|---|---|---|---|---|---|---|---|
10/24 |
15:00 |
2.4 |
84.3 |
77.8 |
1.14 |
8.3% |
9.5% |
9.5% (EXACT!) |
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