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Supplemental Information

Contrast coefficients for ryegrass growth responses to biochar

Supplementary Table S1. Simultaneous confidence intervals and test statistics for multiple comparisons (contrasts) of performance traits for ryegrass in experiment 1. Significant differences are in boldface type (p < 0.05)

DOI: 10.7287/peerj.preprints.2123v1/supp-1

Contrast coefficients for clover growth responses to biochar

Supplementary Table S2. Simultaneous confidence intervals and test statistics for multiple comparisons (contrasts) of performance traits for clover in experiment 1. Significant differences are in boldface type (p < 0.05)

DOI: 10.7287/peerj.preprints.2123v1/supp-2

Contrast coefficients for ryegrass growth to treated biochars

Supplementary Table S3. Simultaneous confidence intervals and test statistics for multiple comparisons (contrasts) of performance traits for ryegrass in experiment 2. Significant differences are in boldface type (p < 0.05)

DOI: 10.7287/peerj.preprints.2123v1/supp-3

Dose-response script for Experiment.1

source code for linear regression analyses performed in experiment 1: biomass and leaf area response effect sizes as a function of increasing biochar dosage.

DOI: 10.7287/peerj.preprints.2123v1/supp-5

Data set for lolium in experiment 1

Data set containing lolium growth responses in experiment 1

DOI: 10.7287/peerj.preprints.2123v1/supp-6

dataset of clover growth responses to biochars in experiment 1

raw-data of clover growth responses to biochars in experiment 1

DOI: 10.7287/peerj.preprints.2123v1/supp-7

Ryegrass growth responses to treated biochars and leachates

raw data of ryegrass growth responses to treated biochars and leachates

DOI: 10.7287/peerj.preprints.2123v1/supp-8

data set for dose-response analyses in experiment 1

clover performance traits in experiment 1 presented as response ratios

DOI: 10.7287/peerj.preprints.2123v1/supp-9

Data set for dose-response analyses in experiment 1

ryegrass performance traits in experiment 1 presented as response ratios

DOI: 10.7287/peerj.preprints.2123v1/supp-10

Additional Information

Competing Interests

The authors declare that they have no competing interests

Author Contributions

Nigel V Gale conceived and designed the experiments, performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Tara E Sackett conceived and designed the experiments, performed the experiments, wrote the paper, reviewed drafts of the paper.

Sean C Thomas conceived and designed the experiments, contributed reagents/materials/analysis tools, wrote the paper, reviewed drafts of the paper.

Data Deposition

The following information was supplied regarding data availability:

The raw data has been supplied as a supplemental dataset.

Funding

Funding was provided by the Natural Sciences and Engineering Research Council of Canada. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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