Drought Stress and Paper Birch (Betula Papyrifera) Seedlings: Effects of an Organic Biostimulant on Plant Health and Stress Tolerance, and Detection of Stress Effects With Instrument-Based, Noninvasive Methods

  title={Drought Stress and Paper Birch (Betula Papyrifera) Seedlings: Effects of an Organic Biostimulant on Plant Health and Stress Tolerance, and Detection of Stress Effects With Instrument-Based, Noninvasive Methods},
  author={Andrew D. Richardson and Melissa L Aikens and Graeme Pierce Berlyn and Philip Marshall},
  journal={Arboriculture \& Urban Forestry},
We conducted a progressive-drought greenhouse experiment, using potted paper birch (Betula papyrifera) seedlings in their third year of growth, to investigate whether a commercially available organic biostimulant improved plant health and stress tolerance, and to compare four noninvasive, instrument-based methods for monitoring plant stress. In the well-watered (no drought) plants, the biostimulant application significantly increased foliar nitrogen concentrations (P = 0.01) and led to… 

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