As the RLF Technical Team extend their sales and services tour to Raoyang County in Hebei Province, more growers have been helped in understanding the science that underpins the management of crop nutrition. In this article the Team focuses on several different varieties of grapes found growing in the local vineyards throughout this important grape growing region. You can share some of the case-sharing stories of the growers here as they seek to address the pain points in the colour changing period of their vines.