Association of Root Diseases and Bark Beetles (Coleoptera: Scolytidae) with Pinus ponderosa in New Mexico. W. H. Livingston, Research Specialist, Department of Entomology and Plant Pathology, New Mexico State University, Las Cruces 88003. A. C. Mangini, Graduate Research Assistant, and H. G. Kinzer, Professor, Department of Entomology and Plant Pathology, New Mexico State University, Las Cruces 88003, and M. E. Mielke, Biological Technician, Forest Pest Management, U.S. Forest Service, Albuquerque, New Mexico 87102. Plant Dis. 67:674-676. Accepted for publication 1 December 1982. Copyright 1983 American Phytopathological Society. DOI: 10.1094/PD-67-674.

Heterobasidion annosum and Verticicladiella spp. were isolated from roots of ponderosa pine before and after attack by bark beetles (Dendroctonus adjunctus, D. valens, Hylurgops planirostris, H. subcostulatus, Ips knausi, and I. pini). These root pathogens should be considered in future assessments of ponderosa pine mortality in New Mexico.