Skip to main content
×
×
Home

Spatial variation in Nitrogen requirements of cereals, and their interpretation

  • D. R. Kindred (a1), R. Sylvester-Bradley (a1), A. E. Milne (a2), B. Marchant (a3), D. Hatley (a4), S. L. Kendall (a5), S. Clarke (a5), K. Storer (a6) and P. M. Berry (a6)...
Abstract

A range of precision farming technologies are used commercially for variable rate applications of nitrogen (N) for cereals, yet these usually adjust N rates from a pre-set value, rather than predicting economically optimal N requirements on an absolute basis. This paper reports chessboard experiments set up to examine variation in N requirements, and to develop and test systems for its prediction, and to assess its predictability. Results showed very substantial variability in fertiliser N requirements within fields, typically >150 kg ha−1, and large variation in optimal yields, typically >2 t ha−1. Despite this, calculated increases in yield and gross margin with N requirements perfectly matched across fields were surprisingly modest (compared to the uniform average rate). Implications are discussed, including the causes of the large remaining variation in grain yield, after N limitations were removed.

  • View HTML
    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Spatial variation in Nitrogen requirements of cereals, and their interpretation
      Available formats
      ×
      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Spatial variation in Nitrogen requirements of cereals, and their interpretation
      Available formats
      ×
      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Spatial variation in Nitrogen requirements of cereals, and their interpretation
      Available formats
      ×
Copyright
Corresponding author
E-mail: daniel.kindred@adas.co.uk
References
Hide All
Defra 2010. The Fertiliser Manual (RB209), 8th edition. The Stationery Office, London.
Kindred, D, Knight, S, Berry, P, Sylvester-Bradley, R, Hatley, D, Morris, N, Hoad, S and White, C 2012. Establishing best practice for estimation of Soil N Supply. HGCA Research Report No. 490.
Kindred, DR, Milne, AE, Webster, R, Marchant, BP and Sylvester-Bradley, R 2015. Exploring the spatial variation in the fertilizer-nitrogen requirement of wheat within fields. Journal of Agricultural Science 153, 2541.
Kindred, D, Sylvester-Bradley, R, Milne, A, Marchant, BP and Storer, K 2016a. Auto-mating nitrogen fertiliser management for cereals (Auto-N). AHDB Research Report No 561.
Kindred, D, Sylvester-Bradley, R, Clarke, S, Roques, S, Smillie, I and Berry, P 2016b. Agronōmics – an arena for synergy between the science and practice of crop production. Paper presented at the 12th European IFSA Symposium at Harper Adams University. 12. p.
Lark, RM and Wheeler, HC 2003. A method to investigate within-field variation of the response of combinable crops to an input. Agronomy Journal 95, 10931104.
Mamo, M, Malzer, GL, Mulla, DJ, Huggins, DR and Strock, J 2003. Spatial and temporal variation in economically optimum nitrogen rate for corn. Agronomy Journal 95, 958964.
McGrath, SP, Stobart, R, Blake-Kalff, M and Zhao, F 2013. Current status of soils and responsiveness of wheat to micronutrient applications. HGCA Project Report No 518.
Milne, A, Webster, R, Ginsburg, D and Kindred, D 2011. Spatial multivariate classification of an arable field into compact management zones based on past crop yields. Computers and Electronics in Agriculture 80, 1730.
Pringle, MJ, McBratney, AB and Cook, SE 2004. Field-scale experiments for site-specific crop management. Part II: A geostatistical analysis. Precision Agriculture 5 (6), 625645.
Sylvester-Bradley, R 2009. Nitrogen for winter wheat – management guidelines. AHDB, Stoneleigh. 19. p.
Sylvester-Bradley, R, Lord, E, Sparkes, DL, Scott, RK, Wiltshire, JJJ and Orson, J 1999. An analysis of the potential of precision farming in Northern Europe. Soil Use and Management 15, 18.
Sylvester-Bradley, R, Berry, P, Blake, J, Kindred, D, Spink, J, Bingham, I, McVittie, J and Foulkes, J 2008. The Wheat Growth Guide, Spring 2008, 2nd Edition HGCA, London 30. p.
Sylvester-Bradley, R and Clarke, S 2009. Using grain N% as a signature for good N use. HGCA Project Report No 458, 61. p.
Sylvester-Bradley, R, Clarke, S, Hatley, D, Wiltshire, JJJ, Kindred, D and Wilson, J 2009. Detecting soil nitrogen supplies by canopy sensing: Proof of concept – Phase 2. In HGCA Research Report 460. London: HGCA.
Sylvester-Bradley, R, Kindred, D, Wynn, S, Thorman, R and Smith, KE 2014. Efficiencies of nitrogen fertilizers for winter cereal production, with implications for greenhouse gas intensities of grain. Journal of Agricultural Science 152, 322.
Sylvester-Bradley, R, Withers, P, Rollett, A, Talboys, P, Walker, R, Edwards, T, Payvandi, S, Heppell, J, Roose, T and Jones, D 2017. Improving the sustainability of phosphorus use in arable farming – ‘Targeted P’. AHDB Research Report (in press).
Whelan, BM, Taylor, JA and Hassall, JA 2009. Site-specific variation in wheat grain protein concentration and wheat grain yield measured on an Australian farm using harvester-mounted on-the-go sensors. Crop and Pasture Science 60 (9), 808817.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Advances in Animal Biosciences
  • ISSN: 2040-4700
  • EISSN: 2040-4719
  • URL: /core/journals/advances-in-animal-biosciences
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords

Metrics

Full text views

Total number of HTML views: 3
Total number of PDF views: 72 *
Loading metrics...

Abstract views

Total abstract views: 120 *
Loading metrics...

* Views captured on Cambridge Core between 1st June 2017 - 23rd July 2018. This data will be updated every 24 hours.