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,
Fraser Noble 1938. He did military service with the Black Watch (Royal Highland Regiment). In 1962 he became Vice-Chancellor of the University of Leicester at the age of 43. The University of Leicester now has the Fraser Noble Building. In 1962 the university had 1,500 students and two faculties of Arts and Sciences. By the time he left, the university had five faculties and 6,000 students. Thanks to him, the Royal Commission on Medical Education (1965-68) in its 1968 report decided that the university needed a medical school. From 1970-72 he was Chairman of the Committee of Vice-Chancellors and Principals of the