Technical reports

  • All 320
  • Environmental factors and damage 50
  • Fertilization and soil management 34
  • General information 106
  • Insects and pests 82
  • Plant health care 91
  • Tree diseases 81
  • Tree management and consulting 15

Resistance recording drills for decay assessment

Canada, Great Britain, Ireland, United States

Resistance recording drills or resistographs are tools used to evaluate decay and other defects in tree stems and branch…

Rhizoctonia root rot

Canada, United States

Rhizoctonia root rot is a common fungal disease caused by various species in the genus <…

Role of nutrients

Canada, Great Britain, Ireland, United States

Plants are one of the few organisms that produce their own food. They do this by converting carbon dioxide and water …

Root collar disorders

Canada, United States

A tree's root collar is the area where the roots join the main stem or trunk. This area is typified by a flare le…

Root pruning

Canada, Great Britain, Ireland, United States

Root pruning is the process of cutting roots prior to mechanical excavation near a tree. Root pruning may be necessar…

Root-knot nematodes

Canada, United States

Plant parasitic nematodes are microscopic worms that can cause significant damage to pla…

Rose rosette disease

Canada, Great Britain, Ireland, United States

Rose rosette is a highly destructive and lethal viral disease affecting all roses. Rose rosette disease (RRD), first …

Rose: Plant health care report

Canada, United States

Roses (Rosa spp.) are the most popular garden plants in the world and they produce the most economically imp…

Rosellinia needle blight, caused by the fungus Hypoxylon herpotrichoides, is a plant pathogen that affects the…

Salt injury on ornamentals

Canada, United States

Salt (sodium chloride) applied as a deicing agent on streets and sidewalks can cause severe damage to many s…