Arboriculture Terms

process of aging. Process preceding leaf drop in deciduous plants.

soil derived from serpentine parent rock material that has high levels of nickel (Ni). chromium (Cr). and magnesium (Mg) and low levels of calcium (Ca). available magnesium (Mg). and available major plant nutrients.

Herbicides that are toxic primarily to the target pest (and perhaps a few related species). leaving most other organisms. including natural enemies. unharmed