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Richard Soppe, John Hornbuckle, Janelle Montgomery 26 th June 2012 CSIRO LAND AND WATER/SUSTAINABLE AGRICULTURE FLAGSHIP Cotton water productivity in the Gwydir, NSW
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Richard Soppe, John Hornbuckle, Janelle Montgomery26th June 2012
CSIRO LAND AND WATER/SUSTAINABLE AGRICULTURE FLAGSHIP
Cotton water productivity in the Gwydir, NSW
Results:Cotton yield and remote sensing based crop water use
2 | Cotton water productivity in the Gwydir, NSW| Richard Soppe, John Hornbuckle, Janelle Montgomery
0 100 200 300 400 500 600 700 800Seasona l crop w ater use (Irrisa t) [m m ]
0
2
4
6
8
10
12
14
16
Co
tton
yie
ld [
bale
s/h
a]
ETc-Yield relationS olid
S ing le sk ip
2.0 m row s
D ouble sk ip
Low defic it surface irriga tion
Latera l m ove
C enter p ivot
• Cotton is widely grown in the northern Murray Darling Basin (Gwydir, Namoi, Border Rivers catchments) and cultivated area is expanding in the Lachlan-Murrumbidgee catchments
Background
3 | Cotton water productivity in the Gwydir, NSW| Richard Soppe, John Hornbuckle, Janelle Montgomery
• Different irrigation systems are used
Background
4 | Cotton water productivity in the Gwydir, NSW| Richard Soppe, John Hornbuckle, Janelle Montgomery
• Different row configurations are used• Solid• Single skip• Double skip
• Rainfall risk management adaption
Background
5 | Cotton water productivity in the Gwydir, NSW| Richard Soppe, John Hornbuckle, Janelle Montgomery
• FAOSTAT-yield (seed cotton) – selected countries 2010 season
Background
6 | Cotton water productivity in the Gwydir, NSW| Richard Soppe, John Hornbuckle, Janelle Montgomery
Seed cotton yield (metric tons/ha)
• Remote sensing based monitoring• NDVI – water use relation• Season 2010-2011
• One question at the start of the season: • Can remote sensing determine the different row configurations?
Method to determine ET-cotton
7 | Cotton water productivity in the Gwydir, NSW| Richard Soppe, John Hornbuckle, Janelle Montgomery
Method to determine ET-cotton
8 | Cotton water productivity in the Gwydir, NSW| Richard Soppe, John Hornbuckle, Janelle Montgomery
Water storage
Solid
Skip rows
Method to determine ET-cotton
9 | Cotton water productivity in the Gwydir, NSW| Richard Soppe, John Hornbuckle, Janelle Montgomery
Irrigation management effect
Method to determine ET-cotton
10 | Cotton water productivity in the Gwydir, NSW| Richard Soppe, John Hornbuckle, Janelle Montgomery
Method to determine ET-cotton
11 | Cotton water productivity in the Gwydir, NSW| Richard Soppe, John Hornbuckle, Janelle Montgomery
Irrigation management effect
Remote Sensing Images
17-Feb-2012 24-Feb-2012
12-Mar-2012 20-Mar-201240 km
Remote Sensing Images
17-Feb-2012 20 km
Results:Cotton yield and remote sensing based crop water use
14 | Cotton water productivity in the Gwydir, NSW| Richard Soppe, John Hornbuckle, Janelle Montgomery
0 100 200 300 400 500 600 700 800Seasona l crop w ater use (Irrisa t) [m m ]
0
2
4
6
8
10
12
14
16
Co
tton
yie
ld [
bale
s/h
a]
ETc-Yield relationS olid
S ing le sk ip
2.0 m row s
D ouble sk ip
Low defic it surface irriga tion
R edm ill so lid
R edm ill so lid sem i
R edm ill so lid lim ited
R edm ill s ing le sem i
R edm ill double sem i
Latera l m ove
C enter p ivo t
CSIRO LAND AND WATER/SUSTAINABLE AGRICULTURE FLAGSHIP
Thank you
CSIRO Land & WaterDr Richard Soppet +61 2 6960 1595e [email protected] www.csiro.au
