Arboriculture Terms

legally binding employment contract between a union and agency for wages. benefits. working conditions. and grievance procedures.

predominantly negatively charged soil particles of clay and humus that adsorb cations. When positively charged. anions are adsorbed. Storage site for plant nutrients.

1) portable winching device. using cable or rope to draw two objects closer together. 2) simple arrangement of rope knots and loops to create mechanical advantage.