There are 16 elements crucial for growth; of those, three are obtained through air and water: hydrogen, carbon, and oxygen.Nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, boron, copper, chlorine, manganese, molybdenum, iron, and zinc are obtained from the soil.Tags: The Necklace Critical Thinking QuestionsSolving Word Problems Involving Linear EquationsMy Great Leader EssayCu Boulder Essay Prompt HelpSat Essay 2005What Is Argument EssayCampground Business Plan
Late or omitted pruning can result in trees that are unmarketable due to large gaps in needle coverage.
Some species of pine, such as the Scots pine, are susceptible to dormant season "yellowing", which is generally countered with a green dye or paint.
Christmas tree cultivation is an agricultural, forestry, and horticultural occupation which involves growing pine, spruce, and fir trees specifically for use as Christmas trees.
The first Christmas tree farm was established in 1901, but most consumers continued to obtain their trees from forests until the 1930s and 1940s.
A wide variety of pine and fir species are grown as Christmas trees, although a handful of varieties stand out in popularity.
In the United States, Douglas-fir, Scots pine and Fraser fir all sell well.
The farmer, a wholesaler, sold his final products for about each; after the cost of the trees and other expenses, a profit of –3 per tree.
The best-selling species in the North American market are Scots pine, Douglas-fir, noble fir, balsam fir, Fraser fir, Virginia pine, and eastern white pine, although other types of trees are also grown and sold.
Christmas tree farms are best located on relatively level land which is free of obstructions.
In the past, Christmas tree farmers established their plantations on less desirable agricultural plots or "wastelands of agriculture".