Dwarfmistletoe removal and reinvasion in jeffrey and ponderosa pine, northeastern California

Willis W. Wagener

Dwarfmistletoe removal and reinvasion in jeffrey and ponderosa pine, northeastern California

Informally Refereed

Authors:

Willis W. Wagener

Year:

1965

Type:

Research Note

Station:

Pacific Southwest Research Station

Source:

Res. Note PSW-RN-073. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 8 p

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Abstract

Nine years of removal of infections and prevention of seeding of dwarfmistletoe from a young mixed Jeffrey-ponderosa pine stand failed to eliminate the parasite. Spread of the parasite back into the experimental plot from infected trees outside averaged about 0.9 feet per year. One tree in 23 appeared to show some resistance to infection. Jeffrey pine had almost twice as many infections per tree as ponderosa pine.

Citation

Wagener, Willis W. 1965. Dwarfmistletoe removal and reinvasion in jeffrey and ponderosa pine, northeastern California. Res. Note PSW-RN-073. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 8 p