Lieu-dit · Saint-Martin-sur-Nohain
Vignes de Villardeau
Vignes de Villardeau is a lieu-dit in Saint-Martin-sur-Nohain, Nivernais, Centre-Loire, whose largest tier is village.
14.3 ha
delimited
178 m
elevation
11.8 h
sun at harvest
Open on the mapWith the boundary, the plots, the sun through the year and the bedrock.
In figures
| Level | Villageinao-aoc-viticoles-bulk (c. 4 September 2026) |
|---|---|
| Village | Saint-Martin-sur-Nohain |
| Region | Nivernais, Centre-Loire |
| Delimited | 14.3 hainao-aoc-viticoles-bulk (c. 4 September 2026) · cadastre-etalab (4 September 2026) |
| Planted | 9.18 hacadastre-etalab (4 September 2026) · ign-bdtopo-vigne (5 September 2026) · ign-rpg-2024 (5 September 2026) |
| Parcels | 22 |
| Grape variety | chasselasinao-cahiers-des-charges (7 September 2026) · dgddi-superficies-produits (7 September 2026) · franceagrimer-observatoire-viticulture (7 September 2026) |
| Organic | 17%agence-bio-cartobio (c. 5 September 2026) · agence-bio-operateurs (5 September 2026) |
Place in the village
Among the 14 named plots ranked village in Saint-Martin-sur-Nohain, from high to low:
Position
178 m
elevation
17.7%
steep
SSE
south-southeast
upper
concave fold
| Elevation | 178 m 157 to 194 mign-rge-alti (5 September 2026) |
|---|---|
| Slope | 17.7% 10.0°ign-rge-alti (5 September 2026) |
| Aspect | south-southeast 167°ign-rge-alti (5 September 2026) |
| On the slope | 47% upper slope, in a concave hollow, 79 m drains onto itign-rge-alti (5 September 2026) |
Bedrock
- 50%Colluvium of clay-with-flints on the Cretaceous Kwartair; verweringsresidu van Boven-Krijt (circa 100 tot 66), verplaatst in de laatste ijstijden
- 29%Kimmeridgian marl with Nanogyra 155–149 million years
- 20%Residual clay with flint on the Upper Cretaceous verweringsresidu van Boven-Krijt (circa 100 tot 66), gevormd in Tertiair en Kwartair · hatched, outside the column
Not a borehole: ordered by age, thickness by share of surface.
In the glass. Sauvignon from this ground is described in Pouilly-Fumé as tight, smoky and late-ripening. That 'flint aroma' does not come from the stone itself, but the combination of clay, warmth and late ripening is characteristic.
Slope material washed down from the clay-with-flints (argile à silex), the weathering residue of the Upper Cretaceous. A brown to reddish-brown clay full of sharp flint fragments, moved and mixed over short distances in the Quaternary. Around Pouilly-sur-Loire this is the classic 'terre à silex' of the higher slopes and plateaus.
For the vine. Heavy clay that holds water, but still drains reasonably well thanks to the high stone content and takes up and retains warmth quickly. Decalcified and therefore without a chlorosis problem; prone, however, to compaction and erosion.
Pouilly-Fumé and Coteaux du Giennois: Saint-Andelain, Tracy-sur-Loire, Garchy, Saint-Martin-sur-Nohain, Cosne-Cours-sur-Loire, Pougny, Saint-Père.
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: CRc, j6c, Rc.
brgm-bdcharm50 (4 September 2026)Sun and horizon
07:42
above the hill
19:33
behind the hill
11.8 h
sun at harvest
Grey: sun up, but behind the hill or the vineyard's own slope.
Around harvest the sun rises here at 07:42 above the hill and disappears at 19:33 behind the hill: 11.8 hours of direct sun on a clear day. The ridge reaches 10.9° above the horizon to the north-northwest.
| Irradiation | +4.1% versus flat land 1,075 kWh/m² from April to October, 43% 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) |
|---|
Three reference days and the caveat
| rise | set | sun | day | |
|---|---|---|---|---|
| 21 June | 06:26 | 20:56 | 14.5 h | 16.0 h |
| 20 September | 07:42 | 19:33 | 11.8 h | 12.3 h |
| 21 December | 08:38 | 16:55 | 8.3 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), 21% of the far field is forest (BD Forêt), no buildings.
Air and cold
23 m
above the lowest point
drains away
cold air
a gully
7.7 ha flows past
| Cold air | 23 m above the hollow, cold air drains awayign-rge-alti (5 September 2026) |
|---|---|
| Cold air passing through | 7.7 ha a gully, mean over the polygon 0.21 haign-rge-alti (5 September 2026) |
Planting
SSE-NNW
down the slope
1.29 m
between the rows
51%
vineyard in 1950
| Rows | SSE-NNW (168°) down the slope (0°), every 1.29 m, varies by plotmeasured over 9.8 of 9.2 ha plantedign-bdortho (6 September 2026) |
|---|---|
| Vineyard in 1950 | 51% abandoned since: 3.03 ha, planted since: 6.18 ha, rows then ran 57° differentlyassessed over 12.7 ha on the 1950-1965 aerial photographign-photos-historiques-1950-1965 (6 September 2026) |
Climate over time
station COURS LES COSNE, 196 m, 10.1 km away
raw daily series, not corrected for station breaks
The name
- vigne
- vineyard, the ordinary word for planted ground. The most common element in this atlas, usually descriptive rather than distinguishing. Viticulture · 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
10.3 ha of 14.3 ha delimited is registered to a legal entity
- GROUPEMENT FONCIER AGRICOLE DU DOMAINE DES CHAUMES42%
- GFA DES FONTAINES8%
- GFA DU CHAMP DE LA CROIX7%
- JACQUES MARCHAND6%
- G F A DE LA CROIX5%
- 2 other legal entities4%
- private individuals or unknown28%
- 5.98 ha GROUPEMENT FONCIER AGRICOLE DU DOMAINE DES CHAUMES AUPM · wine business
- 1.20 ha GFA DES FONTAINES GFA · land company
- 0.96 ha GFA DU CHAMP DE LA CROIX GFA · land company
- 0.80 ha JACQUES MARCHAND SARL · other · organic
- 0.76 ha G F A DE LA CROIX SC · land company
- 0.45 ha COMMUNE DE SAINT MARTIN SUR NOHAIN COM · public
- 0.18 ha GFA DU SILEX GFA · land company
Private individuals or unknown: 4.01 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
- Mocques Village · 550 m
- Champs des Veuves Village · 900 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.