In 2002, the maturity of grapevine was researched on the basis of sugar content, total titratable acidity and pH at seven locations with an undulating topography in four varieties 'Chardonnay', 'Riesling', 'Welschriesling' and 'Sauvignon'. All sampling points were geo-referenced simultaneously with DGPS for creating sugar maps. The significant relationship between the varying altitude above sea...

By the time of the Gold Rush, the vineyard area had reached a few hundred acres and grapes were sold to high prices in Los Angeles and San Francisco [3, 10] . As a consequence of the lucrative prices, many vineyards were planted and the area reached 56,000 acres in 1880 [10] . However, due to Pierce’s Disease in the 1880s, areas in the south became unsuitable to vines and the industry was force...

during 2004–2007 various own rooted vineyards were inspected to study the fungi associated with vine trunk diseases in iran. samples from declining vines showing yellowing and reduced growth and different symptoms in wood, including browning of the wood, necrosis, brown and black streaking and white rot were collected. fungal isolations were made from affected tissues onto malt extract agar (me...