Landcare Research - Manaaki Whenua

Landcare-Research -Manaaki Whenua

Carolyn Hedley

Carolyn Hedley
Position: Soil Scientist / Capability Leader / Research Priority Area Leader
Team: Land Use & Ecosystems
Location: Palmerston North
Private Bag 11052
Manawatu Mail Centre
Palmerston North 4442

Qualifications

Qualifications

  • Massey
    PhD Soil Science
    2010
  • Massey
    MPhilSc Soil Science
    1978
  • Reading
    BSc Soil Science
    1976

Publications

Publications

  • Groundbreaker 2012 ‘Canterbury Dairy Farm Soaks up Benefits from Variable Rate Irrigation’. Issue 130:8-9. (Popular/Trade Journal, 2012)
  • Ravensdown 2011 Precision agriculture in practice - the value of variable rate application Autumn 2011 newsletter, p.16-17. (Popular/Trade Journal, 2012)
  • Hedley C 2012. VRI trials move into final year. IrrigationNZ news (Winter): 42. http://www.irrigationnz.co.nz/assets/Uploads/IrrigationNZ-News-June-2012-Final-lores.pdf (Journal Article, 2012)
  • Hewitt A, Webb T, Dominati E, Hedley C 2012. Soil natural capital basis for land evaluation. Proceedings: 5th Global Workshop on Digital Soil Mapping 2012: Digital Soil Assessments & Beyond ... University of Sydney, Australia, 10-13 April 2012. (Conference Proceedings, 2012)
  • Hewitt A, Webb T, Dominati E, Hedley C 2012. Soil natural capital definition using land evaluation principles. In: Minasny B, Malone BP, McBratney AB ed. Proceedings: Digital soil assessments and beyond: proceedings of the Fifth Global Workshop on Digital Soil Mapping, Sydney, Australia, 10-13 April 2012. Pp. 15-18. http://www.sluri.org.nz/Objectives/DownloadOutput/226 (Conference Proceedings, 2012)
  • Irrigation New Zealand Magazine 2012 Precision Irrigation Lindsay 2012 VRI enhancement project on track for massive return. Advertorial in Irrigation New Zealand Autumn March 2012 issue, p.12 (Popular/Trade Journal, 2012)
  • Bloomer D 2012 Water management a whole farm project. In Irrigation New Zealand Autumn March 2012 issue, p.9. (Popular/Trade Journal, 2012)
  • Roudier P, Hedley C, Ross C 2012. Farm-scale mapping of soil organic carbon using visible-near infra-red spectrscopy. In: Currie LD, Christensen CL ed. Proceedings: Advanced Nutrient Management: Gains from the Past - Goals for the Future,, Massey University, Palmerston North, New Zealand, February 2012. Pp. 7. http://www.massey.ac.nz/~flrc/workshops/12/Manuscripts/Roudier_2012.pdf (Conference Proceedings, 2012)
  • Hedley C, Ekanayake J, Roudier P 2012. Wireless soil moisture sensor networks for precision irrigation scheduling. In: Currie LD, Christensen CL ed. Proceedings: Advanced Nutrient Management: Gains from the Past - Goals for the Future, Massey University, Palmerston North, New Zealand, February 2012. Pp. 10. http://www.massey.ac.nz/~flrc/workshops/12/Manuscripts/Hedley_2012.pdf (Conference Proceedings, 2012)
  • Hedley CB, Payton IJ, Lynn IH, Carrick ST, Webb TH, McNeill S 2012. Random sampling of stony and non-stony soils for testing a national soil carbon monitoring system. Soil research 50(1): 18-29. http://www.publish.csiro.au/paper/SR11171 (Journal Article, 2012)
  • Hedley CB, Payton IJ, Lynn IH, Carrick ST, Webb TH, McNeill S 2012. Random sampling of stony and non-stony soils for testing a national soil carbon monitoring system. Soil research 50(1): 18-29. http://www.publish.csiro.au/paper/SR11171 (Journal Article, 2012)
  • Hedley C, Yule IJ 2011. Soil water status maps for variable rate irrigation. 11 11 In: Clay DE, Shanahan JF ed. GIS applications in agriculture. Vol. 2 Nutrient management for energy efficiency. Boca Raton, FL, CRC Press. Pp. 173-190. (Book Section, 2011)
  • Hedley C, Bradbury S, Watson E, Dalrymple H, Wright J 2011. Farm scale trials of variable rate irrigation to assess the benefits of modifying existing sprinkler systems for precision application. International Journal of Agricultural Management 1(2): 51-55. http://www.ingentaconnect.com/content/iagrm/ijam/2011/00000001/00000002/art00008 (Journal Article, 2011)
  • 2011. Soil Horizons (Special issue: soil carbon) 19. 16 p. http://www.landcareresearch.co.nz/publications/newsletters/soilhorizons/Soil_Horizons_19.pdf (Serial, 2011)
  • Kusumo BH, Hedley MJ, Hedley CB, Tuohy MP 2011. Measuring carbon dynamics in field soils using soil spectral reflectance: prediction of maize root density, soil organic carbon and nitrogen content. Plant and Soil 338(1-2): 233-245. http://dx.doi.org/10.1007/s11104-010-0501-4 (Journal Article, 2011)
  • Hedley CB, Roudier P, Yule IJ, Ekanayake J, Bradbury S 2011. Soil water status and water table modelling using EM surveys for precision irrigation scheduling. Proceedings: Second Global Workshop on Proximal Soil Sensing, Montreal, Canada, May 15-18, 2011. Pp. 8-11. http://adamchukpa.mcgill.ca/gwpss/Papers/GWPSS_2011_Hedley.pdf (Conference Proceedings, 2011)
  • Kusumo BH, Hedley MJ, Hedley CB, Arnold GC 2010. Predicting pasture root density from soil spectral reflectance : field measurements. European journal of soil science 61(1): 1-13. (Journal Article, 2010)
  • Hedley CB, Bradbury S, Ekanayake J, Yule IJ, Carrick S 2010. Spatial irrigation scheduling for variable rate irrigation. Proceedings: Proceedings of the New Zealand Grasslands Association Lincoln, 14-18 November 2010. Pp. 97-102. (Conference Proceedings, 2010)
  • Lee A 2010 Watering smarter, not harder. Dairy Exporter, December 2010, p. 37. (Popular/Trade Journal, 2010)
  • Hedley C, Bradbury S 2010. [Abstract] Variable rate irrigation and EM38 soil moisture mapping- the next step. Proceedings: Irrigated agriculture - NZ's economic future and more, Christchurch Convention Centre, 26-28 April, 2010. Pp. 19-20. (Conference Proceedings, 2010)
  • Hedley CB, Yule IJ, Tuohy MP, Vogeler I 2009. Key performance indicators for simulated variable-rate irrigation of variable soils in humid regions. Transactions of the ASABE 52(5): 1575-1584. http://elibrary.asabe.org/abstract.asp?aid=29146&redir=[volume=52&issue=5&conf=t&orgconf=t2009]&redirType=toc_journals.asp&dabs=Y (Journal Article, 2009)
  • Kusumo BH, Hedley MJ, Hedley CB, Hueni A, Arnold GC, Tuohy MP 2009. The use of Vis-NIR spectral reflectance for determining root density: evaluation of ryegrass roots in a glasshouse trial. European journal of soil science 60(1): 22-32. http://dx.doi.org/10.1111/j.1365-2389.2008.01093.x (Journal Article, 2009)
  • Hedley CB, Kusomo BH, Hedley MJ, Tuohy MP, Hawke M 2009. Soil C and N sequestration and fertility development under land recently converted from plantation forest to pastoral farming. New Zealand journal of agricultural research 52: 443-453. (Journal Article, 2009)
  • Hedley CB, Yule IJ 2009. A method for spatial prediction of daily soil water status for precise irrigation scheduling. Agricultural water management 96: 1737-1745. (Journal Article, 2009)
  • Hedley C, Yule I, Tuohy M, Vogeler I 2009. Key performance indicators for variable rate irrigation implementation on variable soils. Proceedings: 2009 ASABE Annual International Meeting, Grand Sierra Resort and Casino, Reno, Nevada, 21-24 June, 2009. (Conference Proceedings, 2009)
  • Hedley CB, Yule IJ, Tuohy M, Collins A (2008) Development of high resolution proximal sensing methods for mapping daily soil water status for variable rate irrigation. In Proceedings Joint Conference of the New Zealand and Australian Soil Science Societies Soils 2008 Conference, 30 November - 5 December, 2008, Palmerston North, New Zealand. (Conference Proceedings, 2009)
  • Viscarra Rossel R and others. 2008. The Soil Spectroscopy Group. Making a Global Soil Spectral Library. Presentation at 3rd global workshop on Digital Soil Mapping, Logan, Utah 30/9-3/10 2008. (Conference Proceedings, 2009)
  • Hedley CB, Yule IJ, Bradbury S 2009 EM mapping for variable rate irrigation scheduling. Presentation at LandWise Conference “Confronting Climate Challenges with Advanced Farming Systems”, Havelock North 13-14 May, 2009. (Conference Proceedings, 2009)
  • Hedley CB, Yule IJ, Bradbury S, Scotter D, Vogeler I, Sinton S 2009. Water use efficiency indicators for variable rate irrigation of variable soils. In: Trotter MG, Garraway EB, Lamb DW ed. Proceedings: 13th Symposium on Precision Agriculture in Australasia, University of New England, Armidale N.S.W., 10-11 September, 2009. Pp. 44-46. (Conference Proceedings, 2009)
  • Hedley CB, IJ Yule, MP Tuohy and BH Kusumo. 2008. Development of proximal sensing methods for mapping soil water status in an irrigated maize field. Book chapter accepted for Special Edition Book from IUSS 1st Global Workshop on High Resolution Digital Soil Sensing and Mapping, 5-8 February 2008, Sydney, Australia. “Proximal sensing for high resolution soil mapping” Eds. RA Viscarra-Rossel, AB McBratney, B Minasny. Springer Publishers, In Press. (Book Chapter, 2008)
  • Hedley CB, Yule IJ 2008. Soil water status mapping and two variable-rate irrigation scenarios. Proceedings: 9th International Conference on Precision Agriculture, Denver, CO, July, 2008. Pp. 342-355. (Conference Proceedings, 2008)
  • Saggar S, Hedley CB, Giltrap DL, Lambie SM 2007. Measured and modelled estimates of nitrous oxide emission and methane consumption from a sheep-grazed pasture. Agriculture ecosystems and environment 122(3): 357-365. (Journal Article, 2007)
  • Hedley CB, Yuan G, Theng BKG 2007. Thermal analysis of montmorillonites modified with quaternary phosphonium and ammonium surfactants. Applied clay science 35(3-4): 180-188. (Journal Article, 2007)
  • Hedley CB, Kusumo BH, Sanches I, Hedley M, Tuohy M, Hawke M 2007. Proximal sensing of soil and pasture development under "forest to farm" land use change. In: Currie LD, Yates LJ ed. Designing sustainable farms : critical aspects of soil and water management : proceedings of the 20th annual workshop held by the Fertilizer and Lime Research Centre, Massey University at Massey University, Palmerston North, New Zealand, 8-9 February, 2007. Occasional report ; no. 20. Pp. 158-169. (Book Section, 2007)
  • Hedley CB, Kusumo BH, Sanches ID, Hawke M, Hedley MJ, Tuohy MP 2006. [Abstract] Forest to farm conversions - a field characterisation of soil heterogenity relating to pasture production. Soils and society : New Zealand Society of Soil Science Conference 2006, 27-30 November 2006, Rotorua, New Zealand. [Rotorua], [The Conference]. Pp. 42-. (Book Section, 2006)
  • Hedley CB, Kusumo BH, Sanches ID, Hawke M, Hedley MJ, Tuohy MP 2006. Precision agriculture - digital technology for improved sustainable farming. Digital Earth 06 Summit on Sustainability, 27-30 August 2006, Auckland, New Zealand. Pp. -. (Book Section, 2006)
  • Hedley CB, Saggar S, Tate K 2006. Procedure for fast simultaneous analysis of the greenhouse gases: methane, carbon dioxide and nitrous oxide in air samples. Communications in soil science and plant analysis 37: 1501-1510. (Journal Article, 2006)
  • Hedley CB, Yule IJ, Eastwood CR, Shepherd TG, Arnold G 2004. Rapid identification of soil textural and management zones using electromagnetic induction sensing of soils. Australian Journal of Soil Research 42: 389-400. (Journal Article, 2004)
  • Saggar S, Hedley CB, Giltrap DL, Tate K, Lambie S, Li C 2004. Nitrous oxide emissions from grazed pastures. SuperSoil 2004 : 3rd Australian New Zealand Soils Conference, University of Sydney, Australia. Sydney, [The Conference]. Pp. [unpaged]-. (Book Section, 2004)
  • Hedley CB, Eastwood CR, Yule IJ, Dando J, Murray R, Stephens PR 2002. [Poster abstract] Assessing soil variability by electro-magnetic induction survey. Future soils : managing soil resources to ensure access to markets for future generations, 2-6 December 2002: conference proceedings. Perth, Australian Society of Soil Science. Pp. 223-224. (Book Section, 2002)
  • Hedley C, Saggar S, Dando J 2002. [Poster abstract] Use of intact soil cores to assess the effect of soil water content on nitrous oxide emissions from a poorly drained pasture soil. Back to the future : New Zealand Soil Science Society Golden Jubilee Conference, Programme & Abstracts, 25-29 November 2002, Victoria University of Wellington. Wellington, [The Conference]. Pp. 85-. (Book Section, 2002)
  • Saggar S, Hedley CB 2001/9. Estimating seasonal and annual carbon inputs, and root decomposition rates in a temperate pasture following field 14C pulse-labelling. Plant and soil 236(1): 91-103. (Journal Article, 2001/9)
  • Saggar S, Hedley CB, Salt GJ 2001. Soil microbial biomass, metabolic quotient, and carbon and nitrogen mineralisation in 25-year-old Pinus radiata agroforestry regimes. Australian Journal of Soil Research 39(3): 491-504. (Journal Article, 2001)
  • Saggar S, Hedley CB, Giddens KM, Salt GJ 2000/11. Influence of soil phosphorus status and nitrogen addition on carbon mineralization from 14C-labelled glucose in pasture soils. Biology and fertility of soils 32(3): 209-216. (Journal Article, 2000/11)
  • Hedley CB, Saggar S, Theng BKG, Whitton JS 2000. Surface area of soils of contrasting mineralogies using para-nitrophenol adsorption and its relation to air-dry moisture content of soils. Australian Journal of Soil Research 38(1): 155-167. (Journal Article, 2000)
  • Saggar S, Mackay AD, Hedley CB 1999. Hill slope effects on the vertical fluxes of photosynthetically fixed 14C in a grazed pasture. Australian Journal of Soil Research 37: 655-666. (Journal Article, 1999)
  • Saggar S, Hedley C, Mackay AD 1997/8. Partitioning and translocation of photosynthetically fixed 14C in grazed hill pastures. Biology and fertility of soils 25(2): 152-158. (Journal Article, 1997/8)

Memberships

Memberships

  • National Co-ordinator, NZ Soil Carbon Research network
  • SCAANZ Representative, Soil Carbon Accounting Across Australia and New Zealand

Skills

Skills

  • Soil Science
  • Soil water use efficiency and irrigation
  • Soil carbon storage
  • proximal soil sensing (electromagnetic; Vis-NIR spectroscopy)
  • high resolution spatio-temporal modelling
  • spatial variability