Teaching Organic Farming and Gardening

Soil Biology and Ecology

48 | Unit 2.3

Appendix 4: Soil Respiration Data Sheet (for Demo. 2)

soil respiration (at initial f

ield

w

ater c

ontent)

date:

Sample

Ring

Start

End

Soil

Draeger

Soil

Draeger

Soil

site

height

time

time

temp ºC

tube

respiriration

tube

respiration

%CO

(^2) (n=1)
lbs C/A/ day
%CO
(^2) (n=5)
lbs C/A/day
1
0.0
0.0
2
0.0
0.0
3
0.0
0.0
4
0.0
0.0
5
0.0
0.0
6
0.0
0.0
7
0.0
0.0
8
0.0
0.0
soil respiration (at least 6 hours after irrigation or soil wetting)
d
ate:
1
0.0
0.0
2
0.0
0.0
3
0.0
0.0
4
0.0
0.0
5
0.0
0.0
6
0.0
0.0
7
0.0
0.0
8
0.0
0.0

• Soil respiration = PF x ((Soil
  
  Temp C + 273)/273) x (CO
  (^2) % - 0.035) x 22.91 x Ring Ht = lbs CO
  (^2) -C/acre/day
  Note: This adjustment is necessary at elevations > 3,000 ft.;PF = Pressure Factor = ‘raw’ barometric pressure in inches Hg/29.9 inches.
  otherwise PF = 1
  Notes:Conversion: Degrees Celsius = 5/9 x (Degrees Fahrenheit - 32)H = 5.08 cm (if not measured)
  Appendix 4