Dig deep or not at all? Why it might be time to think about shallow ploughing

Ploughing is still widely practised, but there is also a variety of minimum tillage systems in use, including tine or disc planters, strip till, and direct drill systems in use in Ireland.
The basics of ploughing came up in the recent conversation between Tillage Edge podcast host Michael Hennessy and Dermot Forristal, a crops and machinery researcher at Teagasc Oak Park.
Mr Forristal questioned whether ploughing needed to be as deep as it often is in Ireland. He advocated ploughing only as deep as is necessary.