Carolyn Hedley

Hedley C 2012. VRI trials move into final year. IrrigationNZ news (Winter): 42.

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

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

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.

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. https://doi.org/http://dx.doi.org/10.1071/SR11171

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

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. https://doi.org/10.1007/s11104-010-0501-4

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

2011. Soil Horizons (Special issue: soil carbon) 19. 16 p. http://www.landcareresearch.co.nz/publications/newsletters/soilhorizons/Soil_Horizons_19.pdf

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

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.

Whitehead D, Baisden T, Beare M, Campbell D, Curtin D, Davis M, Hedley C, Hedley M, Jones H, Kelliher F, Saggar S, Schipper L 2010. Review of soil carbon measurement methodologies and technologies, including nature and intensity of sampling, their uncertainties and costs. Landcare Research contract report ; LC0910/083. 92 p. http://ndhadeliver.natlib.govt.nz/content-aggregator/getIEs?system=ilsdb&id=1624489

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.

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.

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.

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. CCC:000272000400015

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.

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.

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.

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.

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. https://doi.org/10.1111/j.1365-2389.2008.01093.x

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.

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 20^th 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

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.

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-

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. -

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.

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.

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]-

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-

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

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.

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.

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.

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.

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.

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.