Representative sampling size for strip sampling and number of required samples for random sampling for soil nutrients in direct seeded fields

Representative sampling size for strip sampling and number of required samples for random... Direct seeding is a common agricultural practice in the southern Canadian prairies. The associated band application of fertilizers with minimal disturbance makes conventional soil sampling problematic, as it results in considerable micro-scale variability. Sampling via the collection of strips of soil taken from across the seed and fertilizer bands has been suggested in low disturbance direct seeded fields to help account for this variability. To obtain adequate point-based random samples across entire field areas is an alternative for reliable mean soil nutrient contents. The objective of this study was to identify the representative sampling size (RSS) for strip sampling and the number of required samples (NRS) for point-based random sampling. Soil samples of 0–10 and 10–20 cm depth increments were collected from a 4 ha portion in each of two wheat fields in the Brown soil zone in south-central Saskatchewan. One field (VF field) had a history of fertilization at a variable rate while the other field (CF field) was fertilized at a constant rate. The coefficient of variation (CV) versus sampled strip length was plotted and the RSS was defined when CV ≤10 %. The central limit theorem was used to determine the NRS with relative errors of ±5 to ±20 % at a confidence level of 95 %. The results showed that the RSSs (strip lengths) were 62 and 35 cm, respectively, for assessing available nitrogen (NO3 −-N and NH4 +-N) and extractable, available P. The NRSs differed with sampled field but not with nutrient type and soil layer. With a confidence level of 95 %, about 37 and 81 random samples were needed in the VF and CF fields, respectively, to obtain mean soil nutrient contents with a relative error of ±10 %. Precision Agriculture Springer Journals

Representative sampling size for strip sampling and number of required samples for random sampling for soil nutrients in direct seeded fields

Loading next page...
Springer US
Copyright © 2014 by Springer Science+Business Media New York
Life Sciences; Agriculture; Soil Science & Conservation; Remote Sensing/Photogrammetry; Statistics for Engineering, Physics, Computer Science, Chemistry and Earth Sciences; Atmospheric Sciences
Publisher site
See Article on Publisher Site


  • Soil spatial variability and site-specific fertilization maps in an apple orchard
    Aggelopoulou, KD; Pateras, D; Fountas, S; Gemtos, TA; Nanos, GD
  • Spatial variability of soil nutrients and microbiological properties after the establishment of leguminous shrub Caragana microphylla Lam. plantation on sand dune in the Horqin Sandy Land of Northeast China
    Cao, CY; Jiang, SY; Ying, Z; Zhang, FX; Han, XS

You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.



billed annually
Start Free Trial

14-day Free Trial