greenhouse gas emissions Tag

A University of Wisconsin Madison research group published a dairy lifecycle assessment in the Journal of Cleaner Production that shows small organic dairy farms that focus on grazing and organic production techniques are low greenhouse gas champions. The peer reviewed study uses a breakthrough methodology that includes accounting for the carbon sequestration benefit of grazed pastures. The modeling assessment was done with farm-specific input provided by Organic Valley and reflects the nature and style of production common within the co-op's dairy membership. Other factors contributing to the low greenhouse gas emission results included the avoidance of synthetic crop inputs and...

A study led by the University of Waterloo showed that biobased fertilizers like compost produced fewer greenhouse gases than conventional nitrogen fertilizer. In temperate climates with repeated freeze-thaw events, fertilizers made from biobased residues, like food waste, biosolids from sewage sludges, and digestate from plant materials, resulted in less greenhouse gas production. "The premise of our study is that biobased residues, which are generated as the natural by-product of our lives and economy, have the potential to reduce global warming thanks to our highly variable spring freeze-thaw cycle—in Canada and across the temperate world," explained the study's lead author. According...

Related ATTRA podcast: Episode 187. Perspectives on Agroforestry with Rowan Reid. Part 1 A study led by University of New Hampshire researchers and published in Agriculture, Ecosystems & Environment explored the environmental benefits of silvopasture compared to clearing forests to create open pastures. Trials in New Hampshire and New York compared a reference forest to a silvopasture with about half the trees removed and cows grazing on planted forage and to an open pasture. The silvopasture system had less climate consequences than the open pasture, releasing lower levels of carbon dioxide and nitrous oxide. Soil carbon storage was the same on the...

A study by USDA scientists, published in Agrosystems, Geosciences & Environment Journal, evaluated the greenhouse-gas emissions from grazed grasslands in Oklahoma. Three of the pastures studied were native prairies and one was a planted single species of grass. The team found that in this hot, subhumid area, all the sites were net emitters of carbon dioxide on a yearly basis. All sites emitted small amounts of nitrous oxide, but the non-native site, which received fertilizer, emitted the most nitrous oxide. Scientist noted that, with nitrous oxide being three hundred times stronger at trapping heat than carbon dioxide, this difference really...

Low Carbon Beef, a cattle certification program that enables beef farmers and ranchers to earn premiums by reducing carbon emissions of their cattle operation, announced it has secured approval as a USDA Process Verified Program (PVP) Service Provider from the USDA Agricultural Marketing Service (AMS). This approval marks the first USDA PVP for calculating the life cycle GHG emissions for beef production. The PVP will enable beef providers to differentiate and market beef that is raised with reduced greenhouse gas emissions (GHGs). Family farms, cattle ranchers, feedyards, and beef packers are eligible to enroll their cattle for the LCB certification....