Benchmarking

Benchmark-style by region

Champagne (chalk / Kimmeridgian marl)

Ca: ~75–90% bs
Mg: ~5–10% bs
K: ~1–2% bs
P: ~5–15 ppm
Na: <1% bs

Story vs your balance: Champagne typically runs Ca higher, K lower, P lower than "ideal" numbers. Terroir is a lean, Ca-dominant profile producers chase for acid-driven base wines.

Burgundy (Côte d'Or, calcareous clay / marl)

Ca: ~70–85% bs
Mg: ~8–15% bs
K: ~2–4% bs
P: ~10–20 ppm
Na: <1% bs.

Story: Grand cru Burgundy is basically the balanced template everyone would love to have with Ca nudged high and P kept modest.

Chianti Classico (alberese + galestro, clay-limestone)

Ca: ~65–80% bs
Mg: ~8–15% bs
K: ~3–5% bs
P: ~15–25 ppm
Na: <1% bs.

Story: Classic Chianti sits very close to your target ratios, just with a touch more K and P reflecting warmer climate and some fertilization.

Napa Valley (benchland / alluvial fans, non-saline)

Ca: ~60–75% bs
Mg: ~10–20% bs
K: ~3–6% bs
P: ~20–40 ppm
Na: <1–2% bs

Story: Good Napa sites are balanced generally but more K and P than Champagne/Burgundy. Some of this is natural terroir, but there is also a commercial fertilizer legacy. That higher K is exactly why Napa reds often show softer acidity and higher pH. Big. Plush, fruit forward.

Sonoma (valley floor + bench, sandy-loam & volcanic)

Ca: ~55–70% bs
Mg: ~10–20% bs.
K: ~3–6% bs
P: ~15–30 ppm.
Na: <1–2% bs.

Story: Conceptually similar to Napa but with more soil diversity; K and P still generally higher than in classic European limestone zones (Champagne, Burgundy).

Barossa Valley (sands, red clays; sometimes saline / sodic issues)

Ca: ~50–70% bs
Mg: ~8–15% bs.
K: ~4–8% bs
P: ~20–40+ ppm
Na: ~1–5% bs

Story: Barossa is an outlier compared to some of these others but not less unique and special. Featuring high K and sometimes elevated Na, exactly the cation mix you don't really want for tight, acidic, low-pH sparkling bases or zippy summer whites, but that makes globally recognized plush, (high-pH) Shiraz.

Willamette Valley (basalt + marine sediments, generally more acidic)

Ca: ~50–65% bs
Mg: ~10–20% bs
K: ~3–5% bs
P: ~10–20 ppm
Na: <1% bs

Story: Willamette is often Ca-slightly-lower than some of the others we have profiled here, P-limited, which dovetails with its cool climate leading to naturally high acid wines.

Mosel (steep slate, low CEC, often acidic)

Ca: ~35–55% bs
Mg: ~10–20% bs
K: ~3–6% bs
P: ~15–30 ppm
Na: <1% bs

Story: Mosel is your "low-CEC, acid" archetype: not Ca-dominated, but still relatively low in Na and with reasonable K. Maybe this unique terroir is the proof that you can get razor-sharp wines from soils that don't fit the "high Ca saturation" model at all.

Ebullient Vineyards (Calcium-Driven. Tense. Intentional.)

I have identified a site to build a new sparkling wine operation alongside a unique still wine opportunity. Located in Freeman, Missouri. Not within an AVA (like the Ozark, Loess, etc), on an east-northeastern slope sitting on a fractured limestone shelf with great airflow, a hedge buffer on the western flank and well-draining soils. I have taken multiple samples including macro (whole field samples) and individual sectors. The below are the results from the individual sectors.

Freeman – AV1 Top Vineyard Parcel

Ca: 69.6% base saturation, 1,907 ppm – right in your 65–75% Ca target band and great for the still wine we will make from this sector.
Mg: 11.2% bs, 184 ppm – squarely in the 10–15% Mg comfort zone.
K: 1.9% bs, 104 ppm – just under 2–5% band (a little lean, but acceptable for the cultivars we will plant here).
P (strong Bray): 8 ppm – below the 10–20 ppm benchmark; classic low-P topsoil.
Na: 0.3% bs, 11 ppm – nicely below the 1–2% ceiling.
pH / CEC: pH 5.9, CEC 13.7 meq/100g

Story: Topsoil is the most balanced in Ca and Mg, slightly K-lean and P-poor, with a mildly acid pH that will help keep micronutrients available.

Freeman – AV1 Mid Vineyard Parcel

Ca: 93.2% bs, 4,458 ppm – well above the 65–75% target; hyper-calcareous.
Mg: 4.3% bs, 123 ppm – below your 10–15% benchmark.
K: 2.4% bs, 222 ppm – right in the 2–5% comfort band (Working to drop this closer to 1 over years of cover crops).
P (strong Bray / Olsen): 10 ppm each – at the bottom edge of your 10–20 ppm target.
Na: 0.1% bs, 8 ppm negligible.
pH / CEC: pH 7.2, CEC 23.9 meq/100g.

Story: This is the chalky engine room, very high Ca, modest K, Mg-light and low-P, with neutral pH and big CEC. It's Champagne-like in Ca/K, just pushed further toward Ca dominance. This area is located on the first of two fractured limestone shelves. Some stone is visible, but the fractured limestone has 1"–3" gaps between each plated stone both horizontally and vertically. Plan to use 420A rootstocks.

Freeman – AV1 Bottom Vineyard Parcel

Ca: 91.3% bs, 4,520 ppm, again above the grand-cru style 65–75% band.
Mg: 5.8% bs, 172 ppm, still below your Mg target.
K: 2.8% bs, 269 ppm, comfortably in the 2–5% band.
P (strong Bray): 16 ppm, solidly inside the 10–20 ppm window.
Na: 0.1% bs, 7 ppm – safely low.
pH / CEC: pH 7.0, CEC 24.8 meq/100g.

Story: Parcel still 300' above base of the eastern facing slope so plenty of slope for cold air to drain. Deep rooting opportunities between fractured limestone, this sector stays very Ca-heavy with low Mg, modest K, and decent P, on a strong CEC base. Structurally, it behaves like an even more Ca-dominant version of classic limestone grand cru, exactly the "lean, high-Ca, low-K" profile you want for tense, low-pH sparkling bases. Would like lower K but the amount of Ca will most likely lock out much of the CEC micronutrients. Plan for foliar sprays throughout the season based on petiole evaluation and Midwest Labs. This area is located on the lower of my two fractured limestone shelves. Some stone is visible, but the fractured limestone has 1"–3" gaps between each plated stone both horizontally and vertically making it the very terroir I like for wine. Plan to use 420A rootstocks.