The only way to meet these demands is to be able to make better decisions faster. Better decisions faster means a better understanding about the way tree systems function. Now we are back to science, or the biology of trees. Industry survival depends greatly on the rate of acceptance and adjustment to new tools, new ideas and new demands of the market place. The science behind the treatments Fertilizers are chemicals.
Water is a chemical.
Mulch is a mass of ever-changing chemicals. Herbicides, pesticides and all other materials used to treat trees are chemicals. To even think about modern tree cultivation without an understanding of chemistry is folly indeed. Pruning also depends on an understanding of the tree system. The dose of pruning must, or should be, based on the ratio of living cells to dead cells in a tree, the dynamic mass to static mass ratio.