To reduce greenhouse gas (GHG) emissions on the SOLMACC farms, the frequency or depth of tillage practice was reduced, or the machinery equipment changed. Some of the farmers experimented with a no-tillage approach.
By this, fewer fossil fuels are consumed, and therefore CO2 emissions are reduced. Compared to the other SOLMACC practices, this measure has a limited implication for mitigation but helps to promote soil health and structure, an important climate change adaptation benefit for the farmer.
One of the down-sides from reduced tillage is an increased weed pressure that can result in fewer crop yields. In conventional farming, this is controlled by herbicide applications which by definition is not possible in organic farming. However, by the use of cover crops, the right timing of soil management operations and the adjustment of machinery equipment, weed pressure was controlled on the farms.