in the region's red iron-rich soil. Other varieties grown in the region include Piccola nera. The Vipava Valley district specializes in light, crisp white wines made from the local Pinela and Zelen grapes. Other grapes found throughout the Littoral region include Barbera, Beli Pinot (Beli Burgundec), Cabernet Franc, Cipro, Glera, Klarnica, Laški Rizling, Maločrn, Rumeni Muškat, Syrah, and Vitovska Grganja. Lower Sava Region The Lower Sava Wine-Growing Region () is the only Slovenian wine region that produces more red wine than white, though not by a large margin. The area is subdivided into three districts. The Bizeljsko-Brežice district is known for its sparkling wine production and acidic white wines made from the Rumeni Plavec grape. The Lower Carniola district is known for its production of Cviček made from a blend of white and red wine grapes, most commonly Kraljevina and Žametovka. The White Carniola district is known for its red wine made from Modra Frankinja and Rumeni Muškat. Other grapes found planted throughout The Lower Sava Valley include Beli Pinot, Cabernet Sauvignon, Chardonnay, Gamay, Modri Pinot, Neuburger, Ranina, Rdeča Zlahtnina, Renski Rizling, Šentlovrenka, Šipon, Sivi Pinot, Traminec, and Zweigelt. Currently the Lower Sava Valley region is dominated more by bulk wine, rather than premium wine, production. Drava Region The Drava Wine-Growing Region () is the largest wine region in Slovenia and is subdivided into 7 districts. The Radgona-Kapela district was the first Slovenia wine region to produce sparkling (penina) wine using the méthode champenoise in 1852. The Ljutomer-Ormož district includes the village of Jeruzalem which is known for white wine made from Dišeči Traminec and Ranina. Along with Radgona-Kapela and the Maribor district, Ljutomer-Ormož produces some of the best examples of Drava Valley wine. While the Haloze district is improving in quality, that district along with the Prekmurje, Central Slovene Hills, and Šmarje-Virštanj districts have small production that is consumed locally. Nearly 97% of the wine made in the Drava Valley region is white wine. Other grape varieties found in the Drava Valley include Chasselas, Gamay, Kerner, Kraljevina, Muškat Otonel, Portugalka, Ranfol, Rizvanec, Rumeni Muškat, Zeleni Silvanec, Zlahtnina, and Zweigelt. Viticulture and winemaking In Slovenia, many vineyards are located along slopes or hillsides in terraced rows. Historically vines were trained in a pergola style that optimizes fruit yields. However the emphasis on higher quality wine production has encouraged more vineyards to switch to a Guyot style of vine training. The