Crop leftovers can store huge amounts of carbon: insights from Uganda

Bizcommunity shares a study. which investigates how farmers can help fight climate change and improve their crop yields by adding agricultural waste to their fields. 

In sub-Saharan Africa, biochar from farming residues – like husks, hulls, leaves, branches and straw – could be used to remove carbon from the atmosphere. But few studies have assessed how much of this material is available for biochar and how much carbon it could store in soils. This study shares more light on this as the researchers looked at how much residue was left over from maize, sorghum, rice, millet and groundnut crops on eastern Ugandan farms.

They found that, when converted into biochar, these “leftovers” have significant potential for storing carbon in soils. Adding biochar from crop residues to soil on one hectare of land could offset between 16% and 80% of the 4.6 tonnes of carbon dioxide emitted by one vehicle in the US each year.

Read article here (includes links to study & key concepts)