Hunter Valley wine rot), "Greeneria uvicola" (bitter rot) and other fungi from the genera of "Aspergillus, Penicillium" and "Alternaria". Susceptibility of certain wine grape varieties were found to increase as the grapes reached higher Brix sugar levels. Further research in the 2000s, showed that some of the open canopy techniques used to prevent "Botrytis" grey rot may actually promote the development of some of these other types of rot. Ripe rot, in particular, seemed to thrive at the higher ultraviolet B (280–320 nm) light exposure that open canopies allow. To compound the potential problem for Hunter Valley wine growers is that, as of
The Grapes of Wrath sums up the book's influence: ""The Grapes of Wrath" may well be the most thoroughly discussed novel – in criticism, reviews, and college classrooms – of 20th century American literature." "The Grapes of Wrath" is referred to as a Great American Novel. At the time of publication, Steinbeck's novel "was a phenomenon on the scale of a national event. It was publicly banned and burned by citizens, it was debated on national radio; but above all, it was read." According to "The New York Times," it was the best-selling book of 1939 and 430,000 copies had been printed by February