Repeated tillage degrades soil structure and creates compacted layers than can restrict plant roots. Strip tillage targets soil disturbance to the planting zone and can help retain surface residue, preserve soil moisture, build soil structure, and reduce erosion. This RT approach can give vegetables a good start by warming soils, forming a good seed bed, stimulating nitrogen release, incorporating fertilizer, and killing weeds. The depth and tools used depends on field conditions. Deep zone tillage rips a narrow channel below compacted zones to break up pans (plow, disc, rototiller) and loosen soil in a ~12” zone to prepare a seedbed, often in one pass.
Watch Anu Rangarajan explain strip tillage in the video below: