Long-term inducible resistance in birch foliage: triggering cues and efficacy on a defoliator

@article{Haukioja1985LongtermIR,
  title={Long-term inducible resistance in birch foliage: triggering cues and efficacy on a defoliator},
  author={Erkki Haukioja and Janne Suomela and Seppo Neuvonen},
  journal={Oecologia},
  year={1985},
  volume={65},
  pages={363-369}
}
Heavy damage of the mountain birch foliage, as well as application of small amounts of insect frass to the soil beneath the trees, reduced growth of Epirrita autumnata larvae reared in these trees in the following year. Foliage damage in the previous year decreased larval survival, too. Both foliage damage and insect frass in the soil decreased a fecundity index which combined the effects of size and survival. Because application of small amounts of fertilizers had an effect indistinguishable… CONTINUE READING