1052 j sri research center
TRANSCRIPT
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J-SRI Research Group
YAMAJI Eiji
Dewi Sri
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History of J-SRI
2007 January Unofficial establishment, decided the name April 1 Official establishment July 2 Lecture of Prof. Uphoff at Tokyo University2008 Dec. 1 Lecture of Mr. Iwasawa Meetings 6 times2009 Field visit 1 time Meetings 5 times2010 Meetings 4 times plus…..
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Members of J-SRI
Advisors Norman Uphoff & Horie TakeshiChairman Yamaji EijiChief Secretary Mizoguchi Masaru Secretaries Sato Shuichi Araki Tetsuya Abe Jun Yokoyama Shigeki Kimura Sonoko Dorothea Noborio Kosuke Tanaka AtsukoInspector s Kobayashi Kazuhiko Iida Toshiaki
Members 2+10+152+16 =180 (as of Oct. 31, 2010)
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Subject Interests of J-SRI Members
Land Consolidation Yamaji EijiSoil Physics Mizoguchi Masaru Project Management Sato ShuichiFieldwork Araki TetsuyaRoot Growth Abe JunNutrition Toriyama KazunobuSocial Network Yokoyama ShigekiGHG Emissions Kimura Sonoko Dorothea Noborio Kosuke Iida Toshiaki Modeling Kobayashi Kazuhiko Tanaka Atsuko
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J-SRI Activities
Studies of SRI technology
Surveys of SRI in Indonesia, Lao, Cambodia, Viet Nam, Philippines, India, and Kenya
Experiments in Indonesia and Japan
Measurements of CH4 and N2O
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SRI in Japan
Researchers TUAT Field research 2007, 2008 UT Field research 2008, 2009, Lysimeter 2010 Meiji University Lysimeter 2010 JIRCAS Field research 2010
Farmers Mr. Ogawa, Aichi prefecture 2009 Mr. Iwasawa and team 2010
Non-farmers NPO Hotaruno, Chiba prefecture 2010
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Some Findings of J-SRI
Conditions of yield increase Mechanisms of yield increaseReducing GHG emissionsHow many plants for transplantFarmers’ acceptance
Spread of SRI … just started
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Country SRI (non-SRI) Country SRI (non-SRI)
Bangladesh 6.3 (4.9) Madagascar 7.2 (2.6)
Cambodia 4.8 (2.7) Myanmar 5.4 (2.0)
China 12.4 (10.9) Nepal 8.5 (4.2)
Cuba 7.4 (4.3) Philippines 6.0 (3.0)
India 8.0 (4.0) Sierra Leone 5.3 (2.5)
Indonesia 7.4 (5.0) Sri Lanka 7.8 (3.6)
Sato Shuichi(2006), units = tons of unhusked rice
Reported Yield Increases
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Stoop, Uphoff et al. (2002)
Researchers positive
Rafaralahy(2002)
NGO
Madagascar case 15 ~ 20 ton/ha
Ceesay et al.(2006)Experiment in Gambia
Sato(2006)
Consultant
Much experience in Indonesia
Focus on roots
Sheehy et al.(2004)Negative
forirrigation method
Dobermann(2003)Negative
Using yield modeland China experiment
Horie et al.(2005)
PossibleBased on
Japanese experience
Positive/Negative Papers
Originated by Shimizu Keisuke (2008)
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Papers Country FieldSRI yield
(t/ha)SRI
increase
Tsujimoto et al.3) Madagascar F 8.9 5.1
Satyaranayana et al.4) India F 8.7 2.5
Thakur et al.5) India ES 6.3 1.8
Sinha and Talati6) India F 5.8 1.7
Mishra and Salokhe7) Thailand ES 6.3 1.1
Zhao et al.8) China ES 7.3 0.9
Chapagain and Yamaji9) Japan ES 7.4 0.0
Sheehy et al.10) China ES 7.2 0.0
Islam et al.11) Bangladesh ES 5.6 -0.2
Stoop1) China ES 3.7 -0.3
Latif et al.12) Bangladesh ES 5.4 -0.7
SRI yield from another view (Wakimoto)
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One point is not enough
SRI SRI conventional
6.20 7.52 4.30
7.53 7.82 5.42
Sulawesi
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4 5 6 7 8 9 t/ha
More detailed measurement
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5m x 5m size, 20 plots
Lombok Test site
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0.00
2.00
4.00
6.00
8.00
10.00
12.00
D1 D2 D4 S1 S2 S4 T1 T2 T4 N1 N2 N4 C1 C2 C4
t/haIntermittent Irrigation Continuous Irrigation
Direct Seeding 7 days 21 days 7 days 21 days
Yield, 2007/2008 Rainy SeasonPlots 5m by 2.5m
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Kashiwa Field
Conv. Organic
SRI Chemical
Conv. Chemical
SRI Organic Channel
Tsukuba eXpress
May 18 – October 3, 2009
Chamber
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Snapshots: SRI vs Conventional Management
Sample Plants: SRI Sample Plants: Conventional Panicles: SRI vs Conventional
Intermittent vs Flooded Plot Intermittent Plot (60 DAT) Flooded Plot (60 DAT)
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Observations: Yield Parameters
Yield and yield attributing traits as affected by treatments during 2009 rice season
Treatments
Days to Flowerin
g
Days to Maturity
Grain Yield (t/h)
Straw Yield (t/h)
Harvest Index (%)
Plant Lodging %
Organic SRI
76 (84) 120 (128)
6.6 4.8 57.8 0
Organic Non-SRI
72 (94) 114 (136)
6.5 6.4 50.2 0
Chemical SRI
76 (84) 120 (128)
5.9 5.0 54.2 20
Chemical Non-SRI
72 (94) 114 (136)
6.8 6.6 50.9 90
One/Hill ET: 11.8 6.2 5.9 51.3 60
Two/Hill ET: 17.2 7.1 7.0 50.2 60
Three/Hill ET: 16 5.9 6.5 47.3 90
Hexagonal ET: 22 7.1 5.2 57.8 20
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Measurement MethodMeasurement Method
1 m
30cm
30cm
OutletOutlet
Pressure bagPressure bag
fanfan
ThermometerThermometer
handlehandle
50 mL Syringe50 mL Syringe
Tedler bagTedler bag
Closed Chamber method
Methane: GC-FID(Shimazu GC-14A)
Nitrous Oxide: GC-ECD ( Shimazu
GC-2014)
1~ 3 times/ week
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Gas Flux Measured
メタンフラックス
- 10
- 5
0
5
10
15
20
25
30
35
2009/5/17 2009/7/6 2009/8/25 2009/10/14
(mg
CH
4 m
-2 h
-1)
S RI 有機肥料
S RI 化学肥料
慣行農法 有機肥料
慣行農法 化学肥料
Unit Gas FluxMethane Flux
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日本の水田でのメタン放出量(CO 2放出量に換算)
0
1 0 0
2 0 0
3 0 0
4 0 0
5 0 0
S RI/ 有機 S RI/ 化学 慣行/有機 慣行/化学
(gCO
2/m
2)
Methane Flux in Kashiwa
SRI Org. SRI Chem. Conv. Org. Conv. Chem
Methane Flux CO2 equivalent
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Nitrous Oxide Flux in Kashiwa
日本の水田での亜酸化窒素放出量(CO 2放出量に換算)
- 4 0- 3 0- 2 0- 1 001 02 03 0
S RI/有機 S RI/化学 慣行/有機 慣行/化学
(gCO2/m
2)
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Nitrous Oxide Flux CO2 equivalent
SRI Org. SRI Chem. Conv. Org. Conv. Chem
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日本の水田でのメタン、亜酸化窒素放出量(CO 2放出量に換算)
0
1 0 0
2 0 0
3 0 0
4 0 0
5 0 0
S RI/有機 S RI/化学 慣行/有機 慣行/化学
(gCO
2/m
2)
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NH4 and N2O Flux
SRI Org. SRI Chem. Conv. Org. Conv. Chem
Flux of Methane and Nitrous Oxide Flux: CO2 equivalent
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Website: J- SRI study grouphttp://www.iai.ga.a.u-tokyo.ac.jp/j-sri/
In Japan, too much rice presently produced So why J-SRI
Becoming important in many countries
1. Improve and apply Japanese technologies2. Rice for other uses than eating
SRI in future
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Terima kasih