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peer-reviewed research article

Blackline of English walnut trees traced to graft-transmitted virus

authors

S. M. John Mircetich, Agricultural Research, Science and Education Administration, U.S. Department of Agriculture, stationed at University of California, Davis
James Refsguard, Agricultural Research, Science and Education Administration, U.S. Department of Agriculture, stationed at University of California, Davis
Michael E. Matheron, Agricultural Research, Science and Education Administration, U.S. Department of Agriculture, stationed at University of California, Davis

publication information

California Agriculture 34(11):8-10. DOI: 10.3733/ca.v034n11p8. November-December 1980.

abstract

Studies show that blackline can be spread from diseased to healthy trees by budding or grafting as well as by natural means.Blackline disease of walnut trees was experimentally graft-transmitted from infected to healthy trees. Causal agent: a strain of cherry leafroll virus.

author affiliations

S. M. John Mircetich is Research Plant Pathologist, Agricultural Research, Science and Education Administration, U.S. Department of Agriculture, stationed at University of California, Davis. James Refsguard is Research Technicians, Agricultural Research, Science and Education Administration, U.S. Department of Agriculture, stationed at University of California, Davis. Michael E. Matheron is Research Technicians, Agricultural Research, Science and Education Administration, U.S. Department of Agriculture, stationed at University of California, Davis.

author notes

The authors acknowledge the assistance of William Coates, Lonnie Hendricks, David Holmberg, Paul LaVine, William Moller, William Olson, David Ramos, Ross Sanborn, Wallace Schreader, Steve Sibbett, and Beth Teviotdale, U.C. Cooperative Extension.


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