We planned to take some samples from the area where wheat is to be grown in future. The area was laser levelled recently and not cultivated for some time.
It was very hard to take soil samples and the soil was very dry too (it should be at field capacity I believe).
Now, what strategies should be used to improve soil conditions for easier sampling?
Sampling with auger in hard soil may require specific type of auger and accessories. The following links may provide clues to select the suitable tool and accessories:
http://cdpr.ca.gov/docs/emon/pubs/sops/fsso002.pdf
https://www.benmeadows.com/refinfo/techfacts/introduction-augers-samplers-298.htm
https://www.ams-samplers.com/hand-tooling/soil-samplers/soil-augers/professional-series-regular-soil-augers.html
The video in the following link may also be seen:
https://www.youtube.com/watch?v=Yut4owBillY
You may use stainless steel soil coring apparatus, a hand auger or AMS compacted soil sampler kits. The attached pdfs may help you to decide.
Stewart J. Sweeney: We are taking disturbed composite samples for mapping N,P, K and EC of the soil. About 300 gram per sample. However, if soil has not been cultivated for long time. Highly compact with hard panes. How can we take samples upto depths of 30 inches, what improvements to be made in soil and what instruments to be used?
In most cases using tube auger (steel pipe of aboout 5 to 10cm in diamerter with thichness of about 5mm and sharp endwith heavy hammer will work but tedi ) ous
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