Christmas tree cultivation has shifted toward the production of higher-quality trees, increasing land quality expectations as well. Indeed, some species of tree, such as the Fraser fir, are unable to grow on low-quality, marginal farmland. Flat or gently rolling land is preferred to that with steep slopes and inclines, which is prone to erosion and fluctuations in fertility. Noticeable obstructions, such as rocks, fences or significant underbrush, are also undesirable. Like all crops and plants, Christmas trees require a specific set of nutrients to thrive. There are 16 elements crucial for growth; of those, three are obtained through air and water: hydrogen, carbon,
Douglas Fraser in public schools. Despite resistance from both staff and members, he began initiatives within the UAW and the auto industry to recruit more minorities and women. He also pushed for national health insurance. Fraser retired as UAW president in 1983. He was an adjunct professor at Wayne State University for many years, teaching labor relations and labor history. A major research and study center, the Douglas A. Fraser Center for Workplace Issues, was named after him. Fraser received The International Center in New York's Award of Excellence for his significant contributions to life in America. Douglas Fraser died on February