Rust infection most frequently occurs in wave years (Leaphart 1955; Peterson 1959). Years that are foggy with intermittent showers during the high spore production time would seem to be ideal. High resistance does not seem to be necessaryanbsp;...
|Title||:||Susceptibility of pine populations to western gall rust--central Idaho|
|Author||:||Raymond J. Hoff, Intermountain Research Station (Ogden, Utah)|