25/05/2015 1 M.J. McLaughlin University of Adelaide and CSIRO Land and Water Flagship Adelaide, Australia Developing more effective fertilizers 83 rd IFA Annual Conference Outline Why fertilizer efficiency is important Improving fertilizer efficiency Linking science to engineering The future
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
25/05/2015
1
M.J. McLaughlin University of Adelaide and CSIRO Land and Water Flagship
Adelaide, Australia
Developing more effective fertilizers
83rd IFA Annual Conference
Outline
Why fertilizer efficiency is important
Improving fertilizer efficiency
Linking science to engineering
The future
25/05/2015
2
83rd IFA Annual Conference
Fertilizer efficiency = farmer viability/profitability
83rd IFA Annual Conference
Off-site movement of nutrients into waterways
Emission of greenhouse gases to the atmosphere
Fertilizer efficiency = less environmental impact
25/05/2015
3
83rd IFA Annual Conference
Soil Zn deficiency
Human Zn deficiency
Fertilizer efficiency = improved human health
83rd IFA Annual Conference
Phosphorus
25/05/2015
4
83rd IFA Annual Conference
In calcareous soils P use efficiency is low due to strong P reaction with soil
Better P fertilizers for calcareous soils
Microphotograph of P fertilizer granule incubated for 4 wks in a calcareous soil
83rd IFA Annual Conference
5.5 cm
Screening fertilizer P movement into soil
25/05/2015
5
83rd IFA Annual Conference
b b
c
b
a
0.0
0.5
1.0
1.5
2.0
2.5
MAP DAP SSP APP flMAP
Rad
ius
of
hig
h-P
zo
ne
(cm
)
Screening fertilizer P movement into soil
Fluid fertilizer
Calcareous soil
83rd IFA Annual Conference
Granular P Fluid P
Fluid P effective in calcareous soils
25/05/2015
6
83rd IFA Annual Conference
Slow release P Soluble P
fertilizer
Stopping P losses to waterways
83rd IFA Annual Conference
Evaluating controlled release P products
Incr
easi
ng
po
lym
er c
oat
ing
thic
knes
s
25/05/2015
7
83rd IFA Annual Conference
Zinc
83rd IFA Annual Conference
Zinc fertilizers under the microscope
Zinc mapped in fertilizer granules, and form of zinc determined
Movement of zinc out of granules mapped and forms of zinc in soil determined
Advanced Photon Source, Argonne National Laboratory,
Chicago
25/05/2015
8
83rd IFA Annual Conference
Coated area
Inner
MAP
granule
Zinc fertilizers under the microscope
83rd IFA Annual Conference
FSSA/IZA Symposium 26-27 August, Pretoria
Reactions of fertilizer Zn in soil
Zn-enriched fertiliser granule
5 mm
Zn still in/on granule (Zn phosphate)
Zn dissolving and diffusing into soil
25/05/2015
9
83rd IFA Annual Conference
Low Medium High
Water solubility of Zn important
Source; Prof. Ismail Cakmak, Sabanci University
83rd IFA Annual Conference
Improving zinc fertilizers
Source; Prof. Ismail Cakmak, Sabanci University
Ammonium
Phosphate
Ammonium phosphate
Physical barriers to reduce phosphate precipitation of zinc and to increase water solubility
Trace element
Barrier Coating
Peacock A, Stacey SP and McLaughlin MJ. 2010. United States Patent and Trademark Office Application No 61/309,894. Fertilizer Composition Containing Micronutrients and Methods of Making Same.
25/05/2015
10
83rd IFA Annual Conference
Improving zinc fertilizers
MAP MAP+Zn Zn-polymer+barrier coated products
Photo: Courtesy Prof. Ismail Cakmak, Sabanci University
83rd IFA Annual Conference
Effective innovation
25/05/2015
11
83rd IFA Annual Conference
f
Developing effective fertilizers
83rd IFA Annual Conference
Fertilizer efficiency - the future
Nanofertilizers and nanocomposite fertilizers
Signalling fertilizers & biostimulants
ZnO nanoparticles
(Nanostructure & Amorphous Material Inc., USA)
25/05/2015
12
83rd IFA Annual Conference
Acknowledgements
83rd IFA Annual Conference
Acknowledgements
25/05/2015
13
83rd IFA Annual Conference
Further information
www.adelaide.edu.au/fertiliser/
Related Documents
