An Iowa State University extension expert who works with the wine industry in the state believes the new growth in the industry will come in infrastructure and equipment. Viticulturist Mike White says the number of grape acres may not increase, but the way the current acres are used likely will. White says the industry is about 10 years old, and while there were a lot of novices a decade ago, the industry is starting to mature. He says people are investing now in infrastructure and equipment and he sees the number of vineyards maybe declining, while he expects the number of wineries to increase.