Lieu-dit · Saint-Sernin-du-Plain
Aux Poils Blancs
Aux Poils Blancs is a lieu-dit in Saint-Sernin-du-Plain, Côte Chalonnaise, Burgundy, whose largest tier is regional.
2.48 ha
delimited
312 m
elevation
11.2 h
sun at harvest
Open on the mapWith the boundary, the plots, the sun through the year and the bedrock.
In figures
| Level | Regionalinao-aoc-viticoles-bulk (c. 4 September 2026) |
|---|---|
| Village | Saint-Sernin-du-Plain |
| Region | Côte Chalonnaise, Burgundy |
| Delimited | 2.48 hainao-aoc-viticoles-bulk (c. 4 September 2026) · cadastre-etalab (4 September 2026) |
| Planted | 0.57 hacadastre-etalab (4 September 2026) · ign-bdtopo-vigne (5 September 2026) · ign-rpg-2024 (5 September 2026) |
| Parcels | 17 |
| Grape variety | aligoté, chardonnay, melon, pinot blanc, pinot gris, gamay, pinot noir, césar also permitted: aligoté, chardonnay, gamay de bouze, gamay de chaudenay, melon, pinot blanc, pinot grisinao-cahiers-des-charges (7 September 2026) · dgddi-superficies-produits (7 September 2026) · franceagrimer-observatoire-viticulture (7 September 2026) |
| Organic | 0%agence-bio-cartobio (c. 5 September 2026) · agence-bio-operateurs (5 September 2026) |
Place in the village
Among the 52 named plots ranked regional in Saint-Sernin-du-Plain, from high to low:
Position
312 m
elevation
8.9%
firm
SW
southwest
mid-slope
even slope
| Elevation | 312 m 304 to 319 mign-rge-alti (5 September 2026) |
|---|---|
| Daytime temperature | +0.26 °C by day, relative to the village centre at 344 m, ± 0.03 °Cmeteo-france-quotidiennes (18 September 2026) · meteo-france-postes (6 September 2026) · meteo-france-lsh (6 September 2026) · ign-rge-alti (5 September 2026) |
| Slope | 8.9% 5.1°ign-rge-alti (5 September 2026) |
| Aspect | southwest 234°ign-rge-alti (5 September 2026) |
| On the slope | 44% mid slope, on an even plane, 256 m drains onto itign-rge-alti (5 September 2026) |
Bedrock
- 4%Alluvium and colluvium of valley floors and footslopes circa 0,12 tot heden
- 78%Greenish Triassic sandstone and dolomite about 252–237 million years
- 18%Two-mica leucogranite of the Mesvres type about 325–305 million years (Namurien tot Westphalien)
Not a borehole: ordered by age, thickness by share of surface.
In the glass. This is a rare substrate in Burgundy and there is too little systematic experience with it to give a flavour profile. What does count is the poor, quick-drying sandy profile, which limits vigour. (weak indication)
Coarse, feldspar-rich sandstone (arkose) with greenish sandy clays and beige dolomite, deposited in the Lower to Middle Triassic. The arkose is the Burgundian equivalent of the Buntsandstein and in several places rests directly on the weathered granite massif; the beige dolomite above it heralds the Middle Triassic. The sequence is thin and variable in thickness, because it fills the irregularities in the granite surface.
For the vine. Sandy and very permeable: the soil warms early, stays airy and holds little water, which on this substrate is the real risk in a dry summer. Roots go deep easily, which partly offsets the drought. The active lime content is low, so chlorosis rarely plays a part here and the choice of rootstock is freer; the downside is a poor soil with little buffer.
Occurs along the edge of the old crystalline massif in the Couchois and the west of the Côte chalonnaise, among other places near Aluze and Saint-Mard-de-Vaux.
BRGM geological map at 1:50,000. It tells vineyards apart, not plots within a vineyard. The link between rock and taste is indirect: soil depth, water and warmth do the work, and slope, vine age and the cellar do the rest. Units on that map: tG, h3-4Lγ2, FC.
brgm-bdcharm50 (4 September 2026)Sun and horizon
07:56
above the hill
19:06
behind the hill
11.2 h
sun at harvest
0.7 h
lost to the hill
Grey: sun up, behind the hill or its own slope.
Around harvest the sun rises here at 07:56 above the hill and disappears at 19:06 behind the hill: 11.2 hours of direct sun on a clear day. The ridge reaches 8.6° above the horizon to the north-northeast.
| Irradiation | +1.1% versus flat land 1,061 kWh/m² from April to October, 42% of it diffuseunder the average cloudiness of 2005 to 2023 (PVGIS-SARAH3, EU JRC); direct, diffuse and reflected light togetherign-rge-alti (5 September 2026) · ign-lidarhd-mnh (6 September 2026) · ign-bdforet-v2 (5 September 2026) · jrc-pvgis-sarah3 (10 September 2026) |
|---|---|
| Open sky | 99.3% of the sky the slope itself sees; the surrounding relief blocks the restign-rge-alti (5 September 2026) · ign-lidarhd-mnh (6 September 2026) · ign-bdforet-v2 (5 September 2026) |
Three reference days, the caveat
| rise | set | sun | day | |
|---|---|---|---|---|
| 21 June | 06:34 | 21:01 | 14.4 h | 15.9 h |
| 20 September | 07:56 | 19:06 | 11.2 h | 12.3 h |
| 21 December | 08:45 | 16:32 | 7.8 h | 8.5 h |
Computed from the IGN elevation model at 5 m: horizon in 36 directions up to six kilometres, sun position per minute, angle of incidence on the mean slope. Clear sky, with the tree canopy from the IGN forest inventory as a raised horizon (15 m closed forest, 5 m heath, trees within 60 m ignored), 30% of the far field is forest (BD Forêt), no buildings.
Air and cold
27 m
above the lowest point
drains far away
cold air
a gully
5.5 ha flows past
| Cold air | 27 m high on the slope, cold air drains far awayign-rge-alti (5 September 2026) |
|---|---|
| Cold air passing through | 5.5 ha a gully, mean over the polygon 0.38 haign-rge-alti (5 September 2026) |
Planting
NE-SW
down the slope
1.33 m
between the rows
78%
vineyard in 1950
| Rows | NE-SW (35°) down the slope (19°), every 1.33 m, all rows parallelmeasured over 0.5 of 0.6 ha plantedign-bdortho (5 September 2026) |
|---|---|
| Vineyard in 1950 | 78% abandoned since: 1.09 haassessed over 2.0 ha on the 1950-1965 aerial photographign-photos-historiques-1950-1965 (6 September 2026) |
Climate over time
station LA ROCHEPOT, 417 m, 7.9 km away
growing season, April to October: 1951-1980: 14.1 °C, 1991-2020: 15.2 °C
Huglin index: 1951-1980: 1,528, 1991-2020: 1,726
last spring frost: 1951-1980: day 115, 1991-2020: day 108
raw daily series, not corrected for station breaks
The name
- blanc
- white, almost always about the colour of the soil or of the rock coming through. Soil and stone · Terroirium, Eigen telling over de namen in deze atlas (2026)
This is about the words, not about this plot: the same name can have arisen differently elsewhere.
Who owns land here
1.61 ha of 2.48 ha delimited is registered to a legal entity
- DES CHAMPS PHILIPPE34%
- DOMAINE LOUBET DEWAILLY16%
- GFA DE LA CROIX DE BOUCHAT13%
- DOMAINE ANDRE DELORME2%
- private individuals or unknown35%
- 0.84 ha DES CHAMPS PHILIPPE SCI · land company
- 0.39 ha DOMAINE LOUBET DEWAILLY SCEA · wine business
- 0.33 ha GFA DE LA CROIX DE BOUCHAT GFA · land company
- 0.05 ha DOMAINE ANDRE DELORME SCEA · wine business
Private individuals or unknown: 0.87 ha.
Share of the delimited hectares. Only legal entities are public in France; everything else stays unnamed. From the public register of legal entities (DGFiP), as of 1 January 2025. The owner is not always the one who works the vineyard: tenancy is common.
Nearby lieux-dits
- Lès Theurots Regional · 200 m
- Aux Queues de Renards Regional · 200 m
- Lès Vignes Martin Regional · 300 m
- Lès Varennes Regional · 350 m
- Lès Mouchottes Regional · 350 m
- Lès Trembles Regional · 350 m
- Le Bois de l' Étang Regional · 400 m
- Lès Tilles de la Coine Regional · 400 m
In the same village, measured between label points. That does not say which ones border each other; the map shows that.
Where each figure comes from
- Classification
- The INAO delimitation per denomination, cut against the cadastral parcel. Only the INAO's own plans are legally binding; this map is informational.
- Area
- Computed on the sphere from longitude and latitude (turf.area), not in Lambert-93. For an appellation this is the union of the INAO polygons across commune boundaries, measured on the unclosed geometry; the fifteen metres used to close the outline for the map are not counted. For a climat it is the union of the cadastral lieu-dit polygons with that name.
- Planted
- Parcel area times vineyard cover, where cover comes from the IGN vegetation layer supplemented by the agricultural declaration. Checked against the customs harvest declarations: median deviation 5.1 per cent over a hundred appellations.
- Elevation
- Mean of the elevation-model cells whose centre falls inside the polygon, on a 5 m grid.
- Slope
- Per-cell slope from the elevation model using Horn's method, then averaged over the cells in the polygon.
- Aspect
- Vector mean of the per-cell aspect. A plain average would turn north-east and north-west into south.
- Sun at harvest
- Hours of direct sun on 20 September under a clear sky, with the horizon in 36 directions out to six kilometres and the height of woods and buildings on top of it. Canopy height is measured where LiDAR HD covers the area and estimated from BD Forêt where it does not; the panel states which of the two was used.
- Grape variety by appellation
- Per appellation and colour the permitted varieties from the approved cahier des charges; per appellation and tier the declared hectares of white and red from the customs harvest declaration (product codes). One colour permitted: the main variety of that colour. Two colours: from 85 percent of the hectares that colour applies, in between it is called mixed. Champagne: the dominant variety from the planted hectares per variety per commune from FranceAgriMer. Per polygon the dominant variety of its parts by area. Derived, not measured: the variety per plot exists only in the customs vineyard register, which is not public. In a two-colour appellation a single plot may carry the other variety. Customs withhold small appellations (statistical secrecy), in which case the split is missing.
- Bedrock
- The geological unit covering the largest share of the polygon, from the 1:50,000 geological map. At 1:50,000 the map separates one climat from another, but not what varies inside a climat.
- Organic
- Share of the area certified organic or in conversion, from the CartoBio plot register.