Palm Only international rice methane emissions calculations
Distribution of rice crop area, by environment from the International Rice Research Institute World Rice Statistics.

http://www.irri.org/science/ricestat/

kg 

CH4/ha/yr

Australia 1.237 kg CH4/ha/day 262.26096

Cuba 1.237 kg CH4/ha/day 301.84752

Egypt 1.237 kg CH4/ha/day 189.27324

Europe 1.237 kg CH4/ha/day 226.88047

Japan 1.237 kg CH4/ha/day 264.73512

Pakistan 1.237 kg CH4/ha/day 264.73512

South Korea 1.237 kg CH4/ha/day 189.27324

Uruguay 1.237 kg CH4/ha/day 223.91148

US 1.237 kg CH4/ha/day 208.44798

Irrigated Rainfed 

lowland Upland Deepwater

EMISSION 

FACTOR 1.23708 0.44408 0 0.49166

Major riceconsuming 

and producing 

countries 

Percent 

Fields 

Irrigated 

Percent 

Fields 

Rainfed 

lowland 

Percent 

Fields 

Upland 

Percent 

Fields 

Deepwater

custom 

EF

kg 

CH4/ha/yr

Bangladesh 40 42 7 11 0.735428 140.28293

Brazil 35.5 2.8 61.7 0 0.451598 91.523788

Burkina Faso 9 6 0 85 0.555893 85.051629

Cambodia 16 75 1 8 0.570326 173.37898

Chad 0 11 89 0 0.048849 8.9393304

China 93 5 2 0 1.172688 179.12815

Colombia 70 10 20 0 0.910364 139.28569

Congo, Dem 

Rep of 7 19 74 0

0.170971 30.945715

Cote d'Ivoire 7 15 78 0 0.153208 28.190198

Dominican Rep 93 7 0 0 1.18157 324.93175

Ecuador 38.4 0 61.6 0 0.475039 173.38913

Ghana 10 81 9 0 0.483413 88.464542

Guinea 1 19 69 11 0.150829 27.601634

Guyana 71 29 0 0 1.00711 307.16855

India 52.6 32.4 12 3 0.809336 295.40757

Indonesia 60.1 25.3 0 14.6 0.92762 338.58118

Lao PDR 8.3 77.4 14.3 0 0.446396 68.298521

Liberia 2 6 82 10 0.100552 16.943079

Madagascar 52 18 29 1 0.728133 176.93622

Malaysia 66 21 12 1 0.914646 293.14411

The following countries use more than 1 type of cropping regime. To be most accurate, the calculations should use a

multiply the area harvested by the following percentages to determine the area harvested using each regime. Then fo

use the area harvested and the applicable EF to calculate emissions

The following countries all use 1 type of cropping 

regime (irrigated fields) and therefore one EF can be 

applied to their total production amounts

If it is not desired to conduct this ana
Mali 32 25

3 40 0.70355 150.55961

Myanmar 30 5947 0.667547 243.6548

Nepal 21 6658 0.592212 54.483541

Nigeria 16 52 302 0.438688 80.718518

North Korea 67 20 130 0.91766 140.40192

Peru 80 2000 1.07848 228.63776

Philippines 68 29.2 2.80 0.970886 295.14927

Senegal 45 4357 0.782057 143.11636

Sierra Leone 0 28 684 0.144009 29.060976

Sri Lanka 75 2500 1.03883 315.80432

Suriname 93700 1.18157 431.27305

Tanzania 4 73 230 0.373662 136.38648

Thailand 25 72.8 1.7 0.5 0.635019 231.78177

Uganda 2 53 450 0.260104 86.874736

Vietnam 53 3953 0.843593 307.91159

Added 9-16-08

Iran 1.3 117

Iraq 1.3 156

Mexico 1.3 156

Taiwan 1.3 312

Tureky 1.3 136.5

Argentina 1.3 175.5
ld Rice Statistics.

he calculations should use all applicable EFs. First, 

 using each regime. Then for each different regime, 

ot desired to conduct this analysis country by country, it is recommended 

that EPA use the default factor - 1.3
from Appendix Table 4: Rice crop calendar, by country

http://www.irri.org/science/ricestat/

For countries with more than one season per year, season lengths added. For countries with early and late seasons, early sea

Country Month Planted Month Harvested Season Length (days)

Australia October April 212

Bangladesh Data for 4 regions averaged 190.75

Brazil Data for 3 regions averaged 202.67

Burkina Faso June October 153

Cambodia June March 304

Chad June November 183

China Data for 4 regions averaged 152.75

Colombia March July 153

Congo, Dem 

Rep of November April 181

Cote d'Ivoire May October 184

Cuba April November 244

Dominican Rep April December 275

Ecuador Essentially grown year round 365

Egypt May September 153

Europe Average for five countries 183.4

Ghana April September 183

Guinea April September 183

Guyana 

May (main)

Guyana December October

(Spring) March (Spring) 305

India Rice essentially grown year round 365

Indonesia Rice essentially grown year round 365

Japan April October 214

Lao PDR July November 153

Liberia Average for 2 regions 168.5

Madagascar October May 243

Malaysia 320.5

Mali June December 214

Myanmar 

June (Main)

November 

(Second)

December (main)

April (Second) 365

Nepal July September 92

Nigeria May October 184

North Korea May September 153

Pakistan May November 214

Peru January July 212

Philippines 

August (main)

January

(Second)

December (main)

May (Second) 304

Senegal June November 183

Sierra Leone Average for 5 regions 201.8

South Korea June October 153

Average taken for 3 regions. Malaysia 

has 2 seasons, both accounted for in 

season length.
Sri Lanka October (Main)

April (Second)

February (Main)

August (Second) 304

Suriname Essentially grown year round 365

Tanzania Essentially grown year round 365

Thailand 

365

Uganda January November 334

Uruguay November April 181

US Average of two regions 168.5

Vietnam Rice essentially grown year round 365

Added 9-16-08

Month Planted Month Harvested Season Length (days)

Iran Late May Late Aug 90

Iraq May September 120

Mexico May September 120

Taiwan

Feb (Main) 

June(2nd)

June (Main)

October (2nd) 240

Turkey June Late Sept 105

Argentina Late October April 135

Average taken for 4 regions. Second 

season also included
arly and late seasons, early season used.
Country kg CH4/acre/yr

 2022 000s Ha 

Harvested Rice 

 2017 000s Ha 

Harvested Rice 

 2012 000s Ha 

Harvested Rice 

Algerian 84.47 0.00

Argentina 71.02 0.01

Australia 106.13 0.05

Bangladesh 56.77 0.23

Brazil 37.04 -0.42

Canada & United States 84.47 -0.20

China 72.49 -0.34

CIS 84.47 0.00

Columbia 56.37 0.02

Cuba 122.15 0.01

Egypt 76.60 0.00

EU 91.82 0.01

Guatemala 84.47 0.00

India 119.55 -0.62

Indonesia 137.02 0.42

Iran 47.35 0.02

Iraq 63.13 0.03

Ivory Coast 11.41 0.13

Japan 107.13 0.10

Malaysia 118.63 0.00

Mexico 63.13 -0.01

Morocco 84.47 0.00

Myanmar 98.60 0.00

Nigeria 32.67 0.03

Other Africa 84.47 0.20

Other Asia 84.47 0.11

Other CIS 84.47 0.01

Other Eastern Europe 84.47 0.00

Other Latin America 84.47 0.04

Other Middle East 84.47 0.00

Pakistan 107.13 0.27

Paraguay 84.47 0.00

Peru 84.47 0.01

Philippines 119.44 0.25

ROW 82.53 0.14

Russia 84.47 0.01

Russia and Ukraine 84.47 0.00

South Africa 84.47 0.00

South Korea 76.60 0.08

Taiwan 126.26 -0.01

Thailand 93.80 0.20

Tunisia 84.47 0.00

Turkey 55.24 0.01

Ukraine 84.47 0.00

Uruguay 90.61 0.03

Uzbekistan 84.47 0.00

Venezuela 84.47 0.01
Vietnam 124.61 0.01

Western Africa 84.47 0.00

Net Total100

Average 84.47

United States -0.204332338
2022 MT 

CH4/yr

2017 MT 

CH4/yr

2012 MT 

CH4/yr

0 0 0

1 0 0

13 0 0

32 0 0

-39 0 0

-43 0 0

-61 0 0

0 0 0

2 0 0

2 0 0

0 0 0

2 0 0

0 0 0

-182 0 0

143 0 0

3 0 0

5 0 0

4 0 0

27 0 0

0 0 0

-1 0 0

0 0 0

0 0 0

3 0 0

41 0 0

24 0 0

1 0 0

0 0 0

9 0 0

0 0 0

71 0 0

0 0 0

3 0 0

75 0 0

29 0 0

1 0 0

0 0 0

0 0 0

15 0 0

-3 0 0

45 0 0

0 0 0

2 0 0

0 0 0

7 0 0

0 0 0

2 0 0
2

00

000

23600