Potentially mineralisable nitrogen: relationship to crop production and spatial mapping using infrared reflectance spectroscopy
D. V. Murphy A C , M. Osman A , C. A. Russell B , S. Darmawanto A and F. C. Hoyle AA Soil Biology Group, School of Earth and Environment, The University of Western Australia, Crawley, WA 6009, Australia.
B Centre of Excellence in Natural Resource Management, Faculty of Natural and Agricultural Sciences, Albany, WA 6330, Australia.
C Corresponding author. Email: daniel.murphy@uwa.edu.au
Australian Journal of Soil Research 47(7) 737-741 https://doi.org/10.1071/SR08096
Submitted: 28 April 2008 Accepted: 22 June 2009 Published: 6 November 2009
Abstract
Accurate and rapid prediction of the spatial structure of soil nitrogen (N) supply would have both economic and environmental benefits with respect to improved inorganic N fertiliser management. Yet traditional biochemical indices of soil N supply have not been widely incorporated into fertiliser decision support systems or environmental risk monitoring programs. Here we illustrate that in a low-input, semi-arid environment, potentially mineralisable N (PMN, as determined by anaerobic incubation) explained 21% of wheat grain yield (P = 0.003), whereas there was no significant relationship between wheat grain yield and inorganic N fertiliser application. We also assessed the spatial pattern of PMN using a structured grid soil sampling strategy over a 10-ha area (180 separate samples, 0–0.1 m). PMN in each soil sample was determined by standard biochemical analysis and also predicted using a fourier transform infrared spectrometer (FTIR). Findings illustrate that FTIR was able to significantly predict (P < 0.001) PMN values in soil and has the advantage of enabling high sample throughput and rapid (within minutes) soil analysis. Given the relatively low cost of FTIR machines and ease of use, such an approach has practical application in situations where analysis cost or access to equipped laboratories has hindered the measurement and monitoring of soil N supply within paddocks and across regions.
Acknowledgment
This research was funded by the Australian Grains Research and Development Corporation.
Angus JF
(2001) Nitrogen supply and demand in Australian agriculture. Australian Journal of Experimental Agriculture 41, 277–288.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Baxter SJ,
Oliver MA, Gaunt J
(2003) A geostatistical analysis of the spatial variation of soil mineral nitrogen and potentially available nitrogen within an arable field. Precision Agriculture 4, 213–226.
| Crossref | GoogleScholarGoogle Scholar |
Bertrand I,
Janik LJ,
Holloway RE,
Armstrong RD, McLaughlin MJ
(2002) The rapid assessment of concentrations and solid phase associations of macro- and micronutrients in alkaline soils by mid-infrared diffuse reflectance spectroscopy. Australian Journal of Soil Research 40, 1339–1356.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Cambardella CA,
Moorman TB,
Novak JM,
Parkin TB,
Karlen DL,
Turco RF, Konopka AE
(1994) Field scale variability of soil properties in Central Iowa soils. Soil Science Society of America Journal 58, 1501–1511.
Cookson WR, Murphy DV
(2004) Quantifying the contribution of dissolved organic matter to soil nitrogen cycling using 15N isotopic pool dilution. Soil Biology & Biochemistry 36, 2097–2100.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Corre MD,
Schnabel RR, Stout WL
(2002) Spatial and seasonal variation of gross nitrogen transformations and microbial biomass in a Northeastern US grassland. Soil Biology & Biochemistry 34, 445–457.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Dahiya IS,
Anlauf R,
Kersebaum KC, Richter J
(1985) Spatial variability of some nutrient constituents of an alfisol from loess. 2. Geostatistical analysis. Zeitschrift fur Pflanzenernährung und Bodenkunde 148, 268–277.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Giebel A,
Wendroth O,
Reuter HI,
Kersebaum K-C, Schwarz J
(2006) How representatively can we sample soil mineral nitrogen? Journal of Plant Nutrition and Soil Science 169, 52–59.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Haaland DM, Thomas VT
(1988) Partial least-square methods for spectral analyses. I. Relation to other quantitative calibration methods and the extraction of qualitative information. Analytical Chemistry 60, 1193–1202.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Janik LJ,
Merry RH, Skjemstad JO
(1998) Can mid infrared diffuse reflectance analysis replace soil extractions? Australian Journal of Experimental Agriculture 38, 681–696.
| Crossref | GoogleScholarGoogle Scholar |
Keeney DR, Bremner JM
(1966) Comparison and evaluation of laboratory method of obtaining an index of soil nitrogen availability. Agronomy Journal 58, 498–503.
|
CAS |
Magdoff F,
Ross D, Amadon J
(1984) A soil test for nitrogen availability to corn. Soil Science Society of America Journal 48, 1301–1304.
Mahmoudjafari M,
Kluitenberg GJ,
Halvin JL,
Sisson JB, Schwab AP
(1997) Spatial variability of nitrogen mineralisation at the field scale. Soil Science Society of America Journal 61, 1214–1221.
|
CAS |
McTaggart IP, Smith KA
(1993) Estimation of potentially mineralisable nitrogen in soil by KCl extraction. II. Comparison with soil N uptake in the field. Plant and Soil 157, 175–184.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Mimmo T,
Reeves JB,
McCarty GW, Galletti G
(2002) Determination of biochemical measures by mid-infrared diffuse reflectance spectroscopy in soils within a landscape. Soil Science 167, 281–287.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Mulvaney RL,
Khan SA,
Hoeft RG, Brown HM
(2001) A soil organic nitrogen fraction that reduces the need for nitrogen fertilisation. Soil Science Society of America Journal 65, 1164–1172.
|
CAS |
Murphy DV,
Fillery IRP, Sparling GP
(1998) Seasonal fluctuations in gross N mineralisation, ammonium consumption and microbial biomass in a Western Australian soil under different land use. Australian Journal of Agricultural Research 49, 523–535.
| Crossref | GoogleScholarGoogle Scholar |
Picone LI,
Cabrera ML, Franzluebbers AJ
(2002) A rapid method to estimate potentially mineralisable nitrogen in soil. Soil Science Society of America Journal 66, 1843–1847.
|
CAS |
Robertson GP,
Crum JR, Ellis BG
(1993) The spatial variability of soil resources following long-term disturbance. Oecologia 96, 451–456.
| Crossref | GoogleScholarGoogle Scholar |
Russell CA,
Angus JF,
Batten GD,
Dunn BW, Williams RL
(2002) The potential of NIR spectroscopy to predict nitrogen mineralisation in rice soils. Plant and Soil 247, 243–252.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Shepherd KD, Walsh MG
(2002) Development of reflectance spectral libraries for characterisation of soil properties. Soil Science Society of America Journal 66, 988–998.
|
CAS |
Skjemstad JO,
Spouncer LR,
Cowie B, Swift RS
(2004) Calibration of the Rothamsted organic carbon turnover model (RothC ver. 26.3), using measurable soil organic carbon pools. Australian Journal of Soil Research 42, 79–88.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Stenger R,
Priesack E, Beese F
(1998) Distribution of inorganic nitrogen in agricultural soils at different dates and scales. Nutrient Cycling in Agroecosystems 50, 291–297.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Stockdale EA, Rees RM
(1994) Relationships between biomass nitrogen and nitrogen extracted by other nitrogen availability methods. Soil Biology & Biochemistry 26, 1213–1220.
| Crossref | GoogleScholarGoogle Scholar |
Walley F,
Yates T,
Van Groenigen JW, Van Kessel C
(2002) Relationships between soil nitrogen availability indices, yield, and nitrogen accumulation of wheat. Soil Science Society of America Journal 66, 1549–1561.
|
CAS |
Webster R, Oliver MA
(1992) Sample adequately to estimate variograms of soil properties. Journal of Soil Science 43, 177–192.
| Crossref | GoogleScholarGoogle Scholar |