Arboriculture Terms

friction knot climbers use. sometimes in place of the tautline hitch or Prusik knot.

1) pesticide formulated from naturally occurring plant extracts. microbes. or microbial by-products that poses very low risk to non-target organisms. 2) pesticide that has limited environmental persistence and poses very low risk to non-target organisms.

1) method of managing plant pests or weeds through the use of natural predators. parasites. or pathogens. 2) biological methods management of vegetation by establishment and conservation of compatible. stable plant communities using plant competition. allelopathy. animals. insects. or pathogens. Cover-type conversion is a type of biological control.