optimalisasi penggunaan air pada lahan sawah

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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

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