Diesel ending worries California compost dealers
California diesel trucks compost sustainability climate transportation nuts
The long trek was a routine journey. But new trucking rules may make such deliveries harder in the future, with major impacts for agriculture.
Compost is essential to organic farming, which is built on the “foundation that you’re working with biological processes rather than chemical processes,” said Paul Muller, a partner of Full Belly Farm, which grows organic nuts, fruits, grains and vegetables.

Compost suppliers worry a state rule phasing out diesel trucks could raise prices for the soil amendment and make it less affordable for small farms. Photo/Caleb Hampton
“We rely on it,” said Javier Zamora, owner of JSM Organics in Monterey County.
In addition to benefiting farms, compost is central to efforts by California lawmakers to combat climate change. It plays a role in the state’s goal to divert 75% of organic waste away from landfills, and in the Healthy Soils Program, which helps subsidize farming practices that sequester carbon in the ground, including composting.
But compost suppliers say they worry a separate climate-focused policy could make it harder for some farms to afford compost deliveries. In April, the California Air Resources Board approved a landmark rule banning the sale of new diesel trucks by 2036 and requiring most trucks operating in the state be zero-emission vehicles by 2042.
Farm and trucking groups have cautioned that insufficient charging infrastructure for electric trucks could leave fresh produce or livestock stranded in rural areas. As the diesel phaseout approaches, agricultural supply companies are also raising concerns.
Clayton Lynch, sales and marketing representative for Agra Marketing, a Butte County company that ships bioproducts such as compost and manure to farms across the state, said he believes the limited carrying capacity of electric trucks will drive up the cost of these inexpensive but heavy materials, impacting agriculture and especially organic farms.
“The value of the products themselves is very low, so the predominant cost is associated with transportation,” Lynch said.
Batteries for electric heavy-duty trucks can weigh up to 16,000 pounds. Due to federal restrictions on how much a rig can weigh, the battery could reduce what a truck can haul by around a third, requiring more trips to move the same freight.
“It would raise the cost exponentially for all of these products that a lot of people who are environmentally conscientious are usually very excited to utilize,” Lynch said. “It’s a huge concern.”
In multiple sectors that serve organic farms, questions linger about who will bear the financial burden of eliminating diesel.
California has budgeted more than $5 billion for the transition to cleaner trucks and buses. With 2,000 zero-emission medium-duty and heavy-duty vehicles on California roads this year and the rule expected to impact 1.8 million vehicles, much of that transition lies ahead.
“In several years, you’re going to have a hard time finding trucking companies, except the big ones” said Al Lopez, owner of Lopez Ag Service in Sacramento County, which supplies compost to farms in the region.