Original title: Relationship between Silvopastoral Cover and Enteric Methane Footprint in Tropical Cattle Farms of the Ecuadorian Amazon
Researchers compared 86 cattle farms in Zamora Chinchipe, Ecuador, grouped by how much of each farm had trees and other silvopastoral cover. They estimated methane from cattle digestion and measured it per hectare of land and per litre of milk. Farms with more cover had a lower estimated methane footprint per hectare. The footprint per litre of milk did not differ clearly across the cover groups.
Imagine caring for a field where cattle graze among trees. It is hard to judge the effect of those trees if you count emissions only by the amount of milk produced, or only by the size of the field. In this paper, comparing farms with different amounts of tree cover is like comparing those fields: the estimated methane was lower per area on farms with more cover, but not clearly lower per litre of milk.
For cattle farmers and people planning land use in Ecuador’s Amazon, the results suggest that more silvopastoral cover is linked to lower methane emissions per area of farmland. But the study did not find a clear difference in emissions per litre of milk, so the result depends on how emissions are measured.
The abstract reports associations among farms, not proof that adding silvopastoral cover causes emissions to fall. It gives no significant difference in the product-based footprint, and the stocking-rate differences among cover groups were not statistically significant. The estimates rely on IPCC emission factors.
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Relationship between Silvopastoral Cover and Enteric Methane Footprint in Tropical Cattle Farms of the Ecuadorian Amazon — Rubén Carrera Durazno, Leticia Jiménez, Natacha Del Cisne Fierro Jaramillo et al. — Agriculture — doi:10.3390/agriculture16192146
Abstract licence: CC BY
Explanation generated by Synthesis from the abstract — it is not the original paper.