Clemens Busch, Marienburg Spätlese QmP 2018 Wine (75cl)

The wine

Clemens Busch, Marienburg Spätlese QmP 2018 Wine (75cl) is recorded as a dessert wine from Mosel, but its grape variety is not yet confirmed in the catalogue.

The vineyard evidence

The evidence link identifies Pündericher Marienburg as named-vineyard with high confidence. The vineyard record lists Riesling.

Soil structure and vine density

Source-recorded ground: Predominantly grey slate in the original sector below the former Marienburg convent; named subsectors include red-, blue- and grey-slate parcels. Geology: Devonian slate in multiple colours and degrees of weathering.

The geological description alone is not enough to infer drainage, water storage or measured soil density.

A soil name is not a bulk-density measurement. BottlePicker only shows soil bulk density where a laboratory or modelled value exists. Texture interpretation follows USDA NRCS soil-water guidance.

Growing-temperature context

Riesling: Cool-climate example; typically 1,800–2,500 growing degree days on the °F scale, equivalent to about 1,000–1,390 °C-days accumulated above a 10°C base.

Heat bands use Oregon State University Extension. The OIV climate method treats growing-season temperature as accumulated heat above 10°C, not a fixed daily target.