France 2010
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Transcript of France 2010
![Page 1: France 2010](https://reader038.fdocuments.in/reader038/viewer/2022103000/5568f41ed8b42aff2e8b4a43/html5/thumbnails/1.jpg)
A comparison of chemical fertiliser and separated liquid pig manure as the sole nitrogen source for winter wheat production.
Gráinne Meade & Tom Mc Cabe
University College Dublin,Lyons Research Farm, Newcastle, Co. Dublin, Ireland.
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Presentation Outline
• Background• Hypothesis• Materials and Methods• Results • Conclusion
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Wheat Production
Animal Feed
Pig Production
Manure Disposal
Background
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Background
• Improved manure spreading technologies
and
• Improved manure treatment technologies
Land application of pig manure at advanced
winter wheat growth stages may now be viable
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Hypothesis
Can liquid pig manure be used as an alternative to chemical fertiliser as a
nitrogen source for winter wheat production?
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Materials and Methods
• 2 experimental sites• 3 N treatments– Untreated zero N control– Separated liquid pig manure (LPM)– Inorganic N fertiliser (CF)
• 3 manure application timings– G.S 31 (1st node)– G.S 33 (3rd node)– G.S 39 (flag leaf emergence)
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Materials and Methods
• N rate 120 kgN/ha
• Liquid Pig Manure (LPM)
• 4% N, 0.08% P, 2% DM
• Band spread at a rate of 30 m3/ha
• Inorganic N (CF) – 27% N
• Leaf N % and chlorophyll readings taken at 10 day intervals until
natural senescence
• Crop N uptake, grain yield and nitrogen uptake efficiency was
assessed at harvest
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Results
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10 20 30 40 50 60 70 10 20 30 40 50 60 700
50
100
150
200
250
300
350
400
450
500
550
600
650
700
Site 1 Site 2
LPM
CF
Control
Days Post N Application
Lea
f C
hlor
ophy
ll U
nits
Effect of trial site and N source on leaf chlorophyll readings
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10 20 30 40 50 60 70 10 20 30 40 50 60 700
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Site 1 Site 2
LPM
CF
Control
Days Post N Application
Lea
f N
Per
cent
age
(%)
Effect of trial site and N source on leaf N percent
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10d 20d 30d 40d 50d 60d 70d 80d0
100
200
300
400
500
600
700
G.S 31/32 G.S 33-37 G.S 39
Days post N application
Lea
f C
hlor
ophy
ll U
nits
Effect of manure application timing on leaf chlorophyll readings
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11-M
ay
15-M
ay
19-M
ay
23-M
ay
27-M
ay
31-M
ay
04-Ju
n
08-Ju
n
12-Ju
n
16-Ju
n
20-Ju
n
24-Ju
n
28-Ju
n
02-Ju
l
06-Ju
l
10-Ju
l
14-Ju
l
18-Ju
l
22-Ju
l
26-Ju
l
30-Ju
l
03-A
ug
07-A
ug0
100
200
300
400
500
600
700
G.S 30-31
G.S 33-35
G.S 37-39
Days Post N Application
Chl
orop
hyll
Uni
tsEffect of N application timing on leaf chlorophyll readings
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10d 20d 30d 40d 50d 60d 70d0
100
200
300
400
500
600
700
0
0.5
1
1.5
2
2.5
3
3.5
4
f(x) = − 25.25 x² + 115.964285714286 x + 433.142857142857R² = 0.991270963370298f(x) = − 0.0419047619047619 x² + 0.00166666666666632 x + 3.27R² = 0.979814401738733
Days post N application
Chl
orop
hyll
Met
er R
eadi
ng
Lea
f N
%
Linear Correlation = 0.94
Site 1
Polynomial regression of average leaf chlorophyll readings and leaf N content samples taken at 10 day intervals for 70 days post N application
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10d 20d 30d 40d 50d 60d 70d0
100
200
300
400
500
600
700
0
0.5
1
1.5
2
2.5
3
3.5
4
f(x) = − 12.7857142857143 x² + 78.2857142857144 x + 452.285714285714R² = 0.963487600258136
f(x) = − 0.0597619047619049 x² + 0.20452380952381 x + 3.54857142857143R² = 0.986686436954748
Days post N application
Chl
orop
hyll
Met
er R
eadi
ng
Lea
f N
%
Linear Correlation = 0.89
Site 2
Polynomial regression of average leaf chlorophyll readings and leaf N content samples taken at 10 day intervals for 70 days post N application
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200 300 400 500 600 7000
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
R² = 0.820117725630813
N% - Day 40
Linear (N% - Day 40)
Lea
f N
%
Linear Correlation = 0.90
200 300 400 500 600 700
R² = 0.824757503277772
N% - Day 50
Linear Correlation = 0.90
Chlorophyll Units
Correlation between leaf N percentage and leaf chlorophyll readings
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CF LPM Untreated CF LPM Untreated0
40
80
120
160
200
240
280
179.27
150.09
86.50
229.52 231.42
129.40
GNU SNU
Site 1 Site 2
Cro
p N
Upt
ake
(kgN
/ha)
Effect of N source on winter wheat crop N uptake
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CF LPM Untreated CF LPM Untreated0
2000
4000
6000
8000
10000
12000
9000
7640
4950
10110 9890
6930
Site 1 Site 2
Gra
in Y
ield
(kg
/ha)
Effect of N source on winter wheat grain yield (kg/ha)
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G.S 31 G.S 33 G.S 390
2000
4000
6000
8000
10000
12000
8260 8120 7870
N application Timing
Gra
in Y
ield
(kg
/ha)
Effect of N application timing on grain yield
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CF LPM CF LPM0
10
20
30
40
50
60
70
80
90
100
77.31
52.99
83.4385.01
Site 1 Site 2
Nit
roge
n U
ptak
e E
ffic
ienc
y (%
)Nitrogen uptake efficiency as affected by N source and site
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Conclusion
• LPM proved to be a useful N source for winter wheat production
• LPM increased grain yield and CNU by 48% and 74% respectively
compared to the zero N control.
• Timely LPM application can achieve similar grain yield levels to
chemical fertilisers
• LPM application may result in economic benefits for cereal producers
• CF proved to be a more efficient N source for grain yield production
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Thank you for listening!
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