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Presentasi Chusnul Arief, MSi (PhD Student di University of Tokyo)
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OPTIMALISASI
PENGGUNAAN AIR
PADA LAHAN SAWAH
Chusnul Arif
FAKTA PADI SAWAHFAKTA PADI SAWAH
� Sektor pertanian adalah sektor yang
memerlukan banyak air
� 70% air dikonsumsi oleh pertanian (World
Water Council)Water Council)
� Pertanian padi di Asia Tenggara mengambil
64-83% air irigasi
� Sumber referensi: pertumbuhan padi akan
lebih baik dalam kondisi tergenang
Kasus: Kebutuhan air di Sukabumi
Alternatif sistem budidaya: SRI
• Berbeda dengan umumnya tanam padi
– Benih muda
– Tanam tunggal
– Jarak tanam lebar– Jarak tanam lebar
– Pupuk organik
– Lebih intensif
– Irrigasi berselang (intermittent): Alternate Wetting and Drying Irrigation (AWDI)
Konsep SRI
• Konsep 1:
Benih Muda Tanam Tunggal
Konsep SRI
• Konsep 2: Jarak lebar
Konsep SRI
• Konsep 3: Intermittent Irrigation
SRI Basic Concepts
• Concept 4: Careful cultivation management
SRI Basic Concepts
• Results: Dense and Tough Paddies
SRI Basic Concepts
• SRI and Non-SRI
Tema Penelitian: Optimalisasi
Management Air Sawah
Land ProductivityMaximize Target
SRI
Paddy Field
Water Productivity
Minimize GHG Emissions
Improve
Goal
Y
NWater
Management
SRI MONITORING SYSTEMSRI MONITORING SYSTEM
SRI MONITORING SYSTEMSRI MONITORING SYSTEM
http://www.x-ability.jp/~swampred/index.php?dfw=fns1
SRI MONITORING SYSTEMSRI MONITORING SYSTEM
http://emsa-sri.org/emsa-sri-sites
CURRENT RESULTS
• Plant Growth Monitoring
Image calendar
CURRENT RESULTS
• Plant Growth Monitoring
Planting Early stage Vegetative stage
Crop development Reproductive stage Late stage
CURRENT RESULTS
• Meteorological parameters
45
50
90
100
Average air temperature (oC)
Average Relative Humidity (%)
20
25
30
35
40
10/14/2010 11/12/2010 12/11/2010 1/9/2011 2/7/2011
50
60
70
80TAve TMaxTMin RHAve
Average air temperature (oC)
Average Relative Humidity (%)
Missing data
CURRENT RESULTS
• Meteorological parameters
10
12Solar Rad(MJ/m2/day) ETo(mm)
Solar Rad (MJ/m2/day)
ETo(mm)
0
2
4
6
8
10/14/2010 11/12/2010 12/11/2010 1/9/2011 2/7/2011
Solar Rad (MJ/m2/day)
ETo(mm)
CURRENT RESULTS
• Soil Parameters
0.800
0.900
1.000 0
50
P
Precipitation(mm)
0.300
0.400
0.500
0.600
0.700
0.800
0 20 40 60 80 100
100
150
200
250
P
I
II
III
IVVWC (m3/m3)
Precipitation(mm)
Days after transplanting (day)
FUTURE NEED
• Data Analyzing:
– Water Productivity
– Water efficiency
• Next Planting:• Next Planting:
– Water level variation
– GHG emission
– Weeding control
SELESAISELESAISELESAISELESAI
