Soil Doctors 005 Take Sample EN 020 · soil sample SAMPLE take a Thanks to the financial support of...
1
DISTURBED SAMPLE soil sample take a Thanks to the financial support of HOW TO When to sample? • Early enough in the cropping cycle so you can use the results to adapt your management practices; • When the soil is not frozen, overly wet or too dry sampling plot (homogeneous part of the field) Max 800 x 800 mt ( 200 x 200 mt if the zone is hilly) field (e.g. of 30 Ha ) plot plot plot sampling spot 15 x 15 cm R E P E A T S T E P S 1 T O 3 U N T I L T H E P L O T I S C O V E R E D . P U T T H E S A M P L E S I N T H E S A M E B U C K E T A N D M I X W E L L List of equipment for soil sampling Before starting, make sure to use clean material auger 20 cm 5 cm bucket permanent marker sample bag spade/ shovel 15 cm 15 cm Pick a spot 15 x 15 cm, remove any plants and scrape mulch and leaf litter from the soil surface 1 Surface soil sample at the primary tillage depth (to measure main soil parameters) 0-15 cm ( 30 cm) Deeper soil sample (to measure e.g. for residual nitrate nitrogen, compaction and salt accumulation) 30-60 cm Dig your soil with the shovel or the auger 2 a b c 3 If you used a shovel, remove the excess soil in order to have an equal proportion of each layer 4 Label the plastic bag and put the equivalent of 2 cups of the soil from the bucket into it How to label a sample bag? With a permanent marker, indicate: - Sampling reference - Name of the operator - Date - Localization of the sample - Any other relevant commentary combine the samples taken from the same plot HETEROGENEOUS AND/OR BIG FIELDS Subdivide it into homogenous sub-areas to be sampled separately. Repeat steps 1 to 4 HOMOGENEOUS AND/OR SMALL FIELD Go directly to Step 5 Analyse your sample with a soil testing kit or send it to the lab 5 Here, I suggest a grid sampling design but other designs can be used. The minimum number of samples to take is 10 © FAO, 2019 CA7168EN/1/12.19 5
Transcript of Soil Doctors 005 Take Sample EN 020 · soil sample SAMPLE take a Thanks to the financial support of...
DISTURBEDSAMPLEsoil sampletake a
Thanks to the financial support of
HOWTO
When to sample?• Early enough in the cropping cycle so you can use the results to adapt your management practices;• When the soil is not frozen, overly wet or too dry
sampling plot(homogeneous part of the field)
Max 800 x 800 mt(200 x 200 mt if
the zone is hilly)
field (e.g. of 30 Ha)
plot
plotplot
samplingspot
15 x15 cm
REPE
AT S
TEPS
1 TO 3 U
NTIL TH
E PLO
T IS COVERED. PUT THE SAMPLES IN THE SAME BUCKET AND MIX WELL
List ofequipment
for soil sampling
Before starting, make
sure to useclean material
auger
20 cm
5 cm
bucket
permanentmarker
samplebag
spade/shovel
15 cm
15 cm
Pick a spot15x15 cm, remove
any plants and scrape mulch and leaf litter from the
soil surface
1
Surfacesoil sample
at the primarytillage depth(to measure main
soil parameters)0-15 cm (30 cm)
Deepersoil sample(to measure e.g.for residual nitratenitrogen, compactionand salt accumulation)30-60 cm
Dig your soilwith the shovel
or the auger
2
ab
c
3
If you used a shovel, remove the excess soil in order to have an equal proportion
of each layer
4Label the plastic bag and put the equivalent of 2 cups of the soil from
the bucket into itHow to labela sample bag? With a permanentmarker, indicate: - Sampling reference- Name of the operator
- Date- Localization of the sample- Any other relevant commentary
combinethe samples
taken from the same plot
HETEROGENEOUS AND/OR BIG FIELDSSubdivide it into homogenous sub-areas to be
sampled separately. Repeat steps 1 to 4
HOMOGENEOUS AND/OR SMALL FIELDGo directly to Step 5
Analyse your sample with a soil testing kit or
send it to the lab
5
Here, I suggest a grid
sampling design but other designs can be used.
The minimum number of samples to take is 10
© F
AO, 2
019
CA71
68EN
/1/1
2.19
5
