Agricultural practices have economic and environmental impacts for farmers, ranchers and buyers of their products.

The adoption of best-in-class agricultural practices, including precision agriculture and feed optimization, can help reduce farmer input costs, improve water quality and reduce greenhouse gas (GHG) emissions. With almost 92 million cattle, 71 million swine and millions of acres of farmland in the U.S. alone, there is an important opportunity to scale solutions in agriculture.

By pursuing best practices in areas such as manure management, enteric emissions, feed inputs, and other activities in animal agriculture along with fertilizer optimization in crop production, we estimate there is a potential to reduce 300 million metric tons (MMT) of GHG emissions by 2030; while at the same time reducing waste and improving yield.

Resources

How to Join


We are working with many of our suppliers to support efforts to optimize fertilizer use on a targeted 76 million acres of land by 2025. In addition, we are working with stakeholders across the beef, dairy, pork and poultry industries to adopt best practices that reduce enteric and manure emissions, optimize feed production and improve soil health. We hope you will join us in committing to reduce GHG emissions from agriculture.

To join the Agriculture pillar of Project Gigaton, your company should set a goal to reduce emissions at the farm level.

The following are examples of goals you can submit:

- Kellogg Company: By 2025, support 500,000 farmers, focusing on Climate Smart Agriculture to improve livelihoods. Continue to help agricultural suppliers, millers and farmers to:

  • Adapt and be resilient to climate change.
  • Optimize use of fertilizer inputs.
  • Estimate GHG emissions and measure continuous improvement.
  • Optimize water use and enhance watershed quality.
  • Improve soil health.

- PepsiCo: 2025 Goal - Work to expand Sustainable Farming Initiative (SFI) across approximately seven million acres to increase environmentally responsible agricultural practices, improve crop yields and growers’ livelihoods, and advance respect for workers’ fundamental human rights. The expanded SFI includes action in crops that collectively represent approximately 75 percent of PepsiCo’s current agricultural-based spend.

The above goals are illustrative examples only and by no means the only goal style that could be submitted as part of Project Gigaton – you’ll need to determine the scope, timeline and type of goal that makes sense for your company and products. After submitting a goal using the button below, you’ll be asked to report on your progress annually so the impact can be recognized and attributed toward the Project Gigaton reduction target.

Fertilizer


Practical guidance for setting a fertilizer target

Establishing a fertilizer commitment will be unique for each company. Your goal may be to improve nutrient management through benchmarking or to work with a highly trained professional on practical ways to fine tune your application processes. Below are examples of the types of programs - from the most basic to the most advanced - that you can build in your supply chain.

What will you report each year and how it will be converted to GHGs?

Each year, you’ll be asked to submit data points to Walmart based on the Project Gigaton pillars you’ve joined (Energy, Waste, Agriculture, etc.). For Fertilizer, you’ll be asked to submit the impact of improvements you’ve achieved in a given calendar year. If you’ve worked on fertilizer optimization, you'll be asked to submit the following data points for Project Gigaton reporting:

  • Number of acres engaged in fertilizer optimization program
  • Location of crops engaged in fertilizer optimization program
  • Crop types engaged in fertilizer optimization program (e.g. corn, wheat, soy)
  • Tools and/or programs used to optimize fertilizer use for specific crops and locations. Types of programs should be based on the following program guidance - suppliers should strive for Level 4 programs.

Once data has been submitted, the greenhouse gas equivalency will be calculated using the formula below:


Emissions factors will be shared later this year.

Animal Agriculture


Practical guidance for setting an animal agriculture goal

When it comes to setting an animal agriculture goal, there are many approaches to achieve emissions reductions and the solution is dependent on the type of animal. You may find the below templates helpful in setting an animal agriculture goal:

What will you report each year and how will it be converted to GHGs?

Each year, you’ll be asked to submit data points to Walmart based on the Project Gigaton pillars you’ve joined (Energy, Waste, Agriculture, etc.). For Animal Agriculture, you’ll be asked to submit the impact of improvements you’ve achieved in a given calendar year. There are multiple options for submitting data to Project Gigaton reporting depending of the type of impact you’ve achieved.

Manure management

If you’ve worked on manure management for dairy, beef, or pork, you'll be asked to submit the following data points for Project Gigaton reporting.

  • Number and type of new manure management systems implemented that achieved GHG reductions (e.g., digesters, covered lagoons, solids separators)
  • Number of animals and percentage of their manure managed for each new system

Once data has been submitted, the estimated greenhouse gas equivalency will be calculated in accordance with the methodology outlined by the Intergovernmental Panel on Climate Change (IPCC) using the formula below:

Emissions reduction each year = U * MS * (EFold – EFnew)

Variable
Description
Source
U
Number of animals with manure managed by a new system for the year (milking dairy cows, non-milking dairy cattle, feedlot beef cattle, pigs)
Supplier reported
MS
Percentage of the animals’ manure managed by a new system
Supplier reported
EFold
Manure management emissions factor for the system that was replaced
Factors under development – to be announced
EFnew
Manure management emissions factor for the new system
Factors under development – to be announced


Beef grazing and feed
If you’ve worked on grazing and feed optimization for beef, you'll be asked to submit the following data points for Project Gigaton reporting.

  • Number of total acres in grazing optimization and optionally, portion of acres with specific NRCS practices implemented
  • Number of total acres in feed optimization and optionally, portion of acres with specific NRCS practices implemented

Once data has been submitted, the estimated greenhouse gas equivalency will be calculated using the formula below:

Emissions reduction each year = (Ag * % Adoption * Grazing Factor) + (Af * % Adoption * Land Factor)

Variable
Description
Source
Ag
Total acres enrolled in optimization program for grazing
Supplier reported
Af
Total acres enrolled in optimization program for feed produced on the farm
Supplier reported
% Adoption
% of total acres with NRCS practices successfully implemented – reported data should be broken out by practice type
Supplier reported – if unknown, a default percentage will be used
Grazing Factor
GHG emissions factor accounting for grazing acres with NRCS practices implemented – factor will vary by practice type
Factors under development – to be announced
Land Factor
GHG emissions factor accounting for feed production acres with NRCS practices implemented – factor will vary by practice type
Factors under development – to be announced


Enteric emissions
If you’ve worked on enteric emissions reductions for dairy and beef, you'll be asked to submit the following data points for Project Gigaton reporting.

  • Number of milking cows in an enteric optimization program (Dairy)
  • Number of non-milking cattle (calves and replacements) in an enteric optimization program (Dairy)
  • Number of feedlot cattle in an enteric optimization program for the year (Beef)

Once data has been submitted, the estimated greenhouse gas equivalency will be calculated using the formula below:

Emissions reduction each year = U * R * Enteric Factor

Variable
Description
Source
U
Number of animals in an optimization program for enteric emissions for the year (milking dairy cows, non-milking dairy cattle, feedlot beef cattle)
Supplier reported
R
X% reduction of enteric emissions due to optimization programs
Under development – to be announced
Enteric Factor
Average enteric emissions per animal
Under development – to be announced


Dairy Yield
If you’ve worked on yield for dairy through the use of automatic milking systems, you'll be asked to submit the following data point for Project Gigaton reporting.

  • Number of animals in automatic milking systems (instead of being milked twice a day)

Once data has been submitted, the estimated greenhouse gas equivalency will be calculated using the formula below:

Emissions reduction each year = (U * Ia * C * Y) – (U * Feed Factor)

Variable
Description
Source
U
Number of animals in automatic milking systems for the year that would have been milked twice a day
Supplier reported
Ia
X% improved yield due to use of automatic milking systems
Under development – to be announced
C
Emissions of milk production from cradle-to-farm gate
US Milk Life Cycle Assessment circa 2008
Y
Average milk production per cow
USDA Milk Production in 2016
Feed Factor

Emissions factor to subtract an increase in feed during lactating periods and associated enteric and manure impacts

Under development – to be announced


Pork Yield
If you’ve worked on yield for pork through feed efficiency initiatives, you'll be asked to submit the following data point for Project Gigaton reporting.

  • Number of animals in a feed conversion optimization program (across all life stages in production)

Once data has been submitted, the estimated greenhouse gas equivalency will be calculated using the formula below:

Emissions reduction each year = (U * R * Yield Factor) + (U * R * Manure Factor)

Variable
Description
Source
U
Number of animals in the feed efficiency program for the year
Supplier reported
R
X% reduction of feed emissions due to optimization programs
Under development – to be announced
Yield Factor
Average feed CO2e emissions per animal = (C*Y*P):
· C = kg of CO2e/kg product (cradle-to-farm gate)
· Y = kg product per animal per year
· P = portion of cradle to farm carbon footprint from feed
National Life Cycle Assessment of Pork circa 2008-2009; Oklahoma Department of Agriculture, Food, & Forestry
Manure Factor
Average manure CO2e emissions per animal
Under development – to be announced


Poultry Housing
If you’ve worked on implementation of heat recovery systems for broiler housing, you'll be asked to submit the following data point for Project Gigaton reporting.

  • Number of barns OR square feet of barn space (preferred) utilizing heat recovery systems

Once data has been submitted, the estimated greenhouse gas equivalency will be calculated using the formula below:

Emissions reduction each year = (U * R * E * Ce * B)

Variable
Description
Source
U
Number or square feet of barns with heat recovery systems
Supplier reported
R
X% efficiency gained due to heat recovery
Under development – to be announced
E
Average use of propane to heat a barn (gallons LP per square foot of barn)
Technical report for the US DOE 2015
Ce
Emissions factor for propane
USEPA Emissions Factors
B
Average square footage of a barn (used if number of barns is reported for variable U, but if total square footage of barn space is reported for variable U, variable B will not be used).
USDA Broiler Industry Report 2011

While we have tried to present a menu of potential options for reducing agricultural emissions, we realize that our list is not exhaustive. Additionally, since much of this work is cutting-edge, methodologies to calculate the emissions impact of such innovations may need to be developed. If you believe you have an emissions-reducing practice or methodology that should be counted toward Project Gigaton, but it is not covered here, please tell us about it by contacting corpsu@wal-mart.com.


For additional information about Project Gigaton, refer to the Frequently Asked Questions.

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