On the other
hand, the decrease of soil structural stability through the experiment
and the absence of effects of cattle manure and digestate
on such physical parameter at the end of the experiment could
confirm the disruption of soil aggregates due to ploughing applied
between crops. Ploughing continually exposes new soil to wet-dry
cycles at the soil surface (Beare et al., 1994), thereby increasing the
susceptibility of aggregates to further disruption.