Isotopic determination of sulfur (S) availability from S coated mono-ammonium phosphate

Tim McLaren; Christopher Guppy; Graeme Blair

Isotopic determination of sulfur (S) availability from S coated mono-ammonium phosphate

Tim McLaren, Christopher Guppy, Graeme Blair

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

An evaluation of three novel elemental sulfur (S°) coated mono-ammonium phosphate (MAP) products ((MAP with coarse (75-100μm) S° coating (MAP75), MAP with fine (17-24μm) S° coating (MAP17), and MAP with 1/3 coarse S°, 1/3 fine S°, and 1/3 sulfate coating (MAPM)) was undertaken in an intact core pot trial using red clover ('Trifolium pratense') and compared with single superphosphate (SSP). Sulfur (S) uptake from coated S sources was not significantly different (p<0.05) from SSP after 120 days of growth. Between 34% and 53% plant S was derived from the fertiliser sources. There was no significant difference in % fertiliser recovery between MAPM and SSP at either harvest and at both harvests fertiliser S recovery was in the order MAP < MAP75 < MAP17 < MAPM < SSP. The key finding was that a MAP coated with 1/3 sulfate and 2/3 S° was able to supply clover with the same amount of S, at the same rate, as SSP over 120 days. Under leaching conditions, this availability may result in slower, longer release of S as the coarser fraction slowly meets plant demands and protects added S from leaching.

Original language	English
Title of host publication	Proceedings of the 19th World Congress of Soil Science: Soil Solutions for a Changing World
Editors	Robert Gilkes, Nattaporn Prakougkep
Place of Publication	Brisbane, Australia
Publisher	International Union of Soil Sciences and Australian Society of Soil Science Inc
Pages	126-128
ISBN (Print)	9780646537832
Publication status	Published - 2010
Event	WCSS 2010: 19th World Congress of Soil Science - Brisbane, Australia Duration: 1 Aug 2010 → 6 Aug 2010

Conference

Conference	WCSS 2010: 19th World Congress of Soil Science
City	Brisbane, Australia
Period	1/08/10 → 6/08/10

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 2 Zero Hunger

Keywords

Soil Chemistry (excl Carbon Sequestration Science)
Crop and Pasture Nutrition

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McLaren, T., Guppy, C., & Blair, G. (2010). Isotopic determination of sulfur (S) availability from S coated mono-ammonium phosphate. In R. Gilkes, & N. Prakougkep (Eds.), Proceedings of the 19th World Congress of Soil Science: Soil Solutions for a Changing World (pp. 126-128). International Union of Soil Sciences and Australian Society of Soil Science Inc. https://hdl.handle.net/1959.11/6501

McLaren, Tim ; Guppy, Christopher ; Blair, Graeme. / Isotopic determination of sulfur (S) availability from S coated mono-ammonium phosphate. Proceedings of the 19th World Congress of Soil Science: Soil Solutions for a Changing World. editor / Robert Gilkes ; Nattaporn Prakougkep. Brisbane, Australia : International Union of Soil Sciences and Australian Society of Soil Science Inc, 2010. pp. 126-128

@inproceedings{6f1e08c0388848d588d2c875ae05d62c,

title = "Isotopic determination of sulfur (S) availability from S coated mono-ammonium phosphate",

abstract = "An evaluation of three novel elemental sulfur (S°) coated mono-ammonium phosphate (MAP) products ((MAP with coarse (75-100μm) S° coating (MAP75), MAP with fine (17-24μm) S° coating (MAP17), and MAP with 1/3 coarse S°, 1/3 fine S°, and 1/3 sulfate coating (MAPM)) was undertaken in an intact core pot trial using red clover ('Trifolium pratense') and compared with single superphosphate (SSP). Sulfur (S) uptake from coated S sources was not significantly different (p<0.05) from SSP after 120 days of growth. Between 34\% and 53\% plant S was derived from the fertiliser sources. There was no significant difference in \% fertiliser recovery between MAPM and SSP at either harvest and at both harvests fertiliser S recovery was in the order MAP < MAP75 < MAP17 < MAPM < SSP. The key finding was that a MAP coated with 1/3 sulfate and 2/3 S° was able to supply clover with the same amount of S, at the same rate, as SSP over 120 days. Under leaching conditions, this availability may result in slower, longer release of S as the coarser fraction slowly meets plant demands and protects added S from leaching.",

keywords = "Soil Chemistry (excl Carbon Sequestration Science), Crop and Pasture Nutrition",

author = "Tim McLaren and Christopher Guppy and Graeme Blair",

year = "2010",

language = "English",

isbn = "9780646537832",

pages = "126--128",

editor = "Robert Gilkes and Nattaporn Prakougkep",

booktitle = "Proceedings of the 19th World Congress of Soil Science: Soil Solutions for a Changing World",

publisher = "International Union of Soil Sciences and Australian Society of Soil Science Inc",

note = "WCSS 2010: 19th World Congress of Soil Science ; Conference date: 01-08-2010 Through 06-08-2010",

}

McLaren, T, Guppy, C & Blair, G 2010, Isotopic determination of sulfur (S) availability from S coated mono-ammonium phosphate. in R Gilkes & N Prakougkep (eds), Proceedings of the 19th World Congress of Soil Science: Soil Solutions for a Changing World. International Union of Soil Sciences and Australian Society of Soil Science Inc, Brisbane, Australia, pp. 126-128, WCSS 2010: 19th World Congress of Soil Science, Brisbane, Australia, 1/08/10. <https://hdl.handle.net/1959.11/6501>

Isotopic determination of sulfur (S) availability from S coated mono-ammonium phosphate. / McLaren, Tim; Guppy, Christopher; Blair, Graeme.
Proceedings of the 19th World Congress of Soil Science: Soil Solutions for a Changing World. ed. / Robert Gilkes; Nattaporn Prakougkep. Brisbane, Australia: International Union of Soil Sciences and Australian Society of Soil Science Inc, 2010. p. 126-128.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Isotopic determination of sulfur (S) availability from S coated mono-ammonium phosphate

AU - McLaren, Tim

AU - Guppy, Christopher

AU - Blair, Graeme

PY - 2010

Y1 - 2010

N2 - An evaluation of three novel elemental sulfur (S°) coated mono-ammonium phosphate (MAP) products ((MAP with coarse (75-100μm) S° coating (MAP75), MAP with fine (17-24μm) S° coating (MAP17), and MAP with 1/3 coarse S°, 1/3 fine S°, and 1/3 sulfate coating (MAPM)) was undertaken in an intact core pot trial using red clover ('Trifolium pratense') and compared with single superphosphate (SSP). Sulfur (S) uptake from coated S sources was not significantly different (p<0.05) from SSP after 120 days of growth. Between 34% and 53% plant S was derived from the fertiliser sources. There was no significant difference in % fertiliser recovery between MAPM and SSP at either harvest and at both harvests fertiliser S recovery was in the order MAP < MAP75 < MAP17 < MAPM < SSP. The key finding was that a MAP coated with 1/3 sulfate and 2/3 S° was able to supply clover with the same amount of S, at the same rate, as SSP over 120 days. Under leaching conditions, this availability may result in slower, longer release of S as the coarser fraction slowly meets plant demands and protects added S from leaching.

AB - An evaluation of three novel elemental sulfur (S°) coated mono-ammonium phosphate (MAP) products ((MAP with coarse (75-100μm) S° coating (MAP75), MAP with fine (17-24μm) S° coating (MAP17), and MAP with 1/3 coarse S°, 1/3 fine S°, and 1/3 sulfate coating (MAPM)) was undertaken in an intact core pot trial using red clover ('Trifolium pratense') and compared with single superphosphate (SSP). Sulfur (S) uptake from coated S sources was not significantly different (p<0.05) from SSP after 120 days of growth. Between 34% and 53% plant S was derived from the fertiliser sources. There was no significant difference in % fertiliser recovery between MAPM and SSP at either harvest and at both harvests fertiliser S recovery was in the order MAP < MAP75 < MAP17 < MAPM < SSP. The key finding was that a MAP coated with 1/3 sulfate and 2/3 S° was able to supply clover with the same amount of S, at the same rate, as SSP over 120 days. Under leaching conditions, this availability may result in slower, longer release of S as the coarser fraction slowly meets plant demands and protects added S from leaching.

KW - Soil Chemistry (excl Carbon Sequestration Science)

KW - Crop and Pasture Nutrition

UR - http://www.iuss.org/19th%20WCSS/symposium/pdf/1719.pdf

UR - http://trove.nla.gov.au/work/37807472

M3 - Conference contribution

SN - 9780646537832

SP - 126

EP - 128

BT - Proceedings of the 19th World Congress of Soil Science: Soil Solutions for a Changing World

A2 - Gilkes, Robert

A2 - Prakougkep, Nattaporn

PB - International Union of Soil Sciences and Australian Society of Soil Science Inc

CY - Brisbane, Australia

T2 - WCSS 2010: 19th World Congress of Soil Science

Y2 - 1 August 2010 through 6 August 2010

ER -

Isotopic determination of sulfur (S) availability from S coated mono-ammonium phosphate

Abstract

Conference

UN SDGs

Keywords

Access to Document

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