vineyards of sancerre appellation, making of dry white wine from sauvignon blanc grape growing on left bank of loire river on

agriculture aoc appellation chalk chateau chavignol cher clay cru cultivation domain dry europe flint france french wine grape grapes green harvest hill kimmeridgian marl landscape left bank loire nature nievre organic outdoor pinot noir plant pouillyfume pouillysurloire rows sancerre sauvignon blanc slopes soil summer tourism travel valley village vineyard viticulture white