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Effective methods of biofumigation: a meta-analysis

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Abstract

Aims

Biofumigation, the burying of Brassicaceaous plant tissues to suppress soil pests, is an increasingly practiced technique. However, the efficiency of biofumigation varies considerably and motivated our meta-analysis on the topic.

Methods

We meta-analyzed data from 46 publications where 934 experiments used 363 unique controls, in order to determine effectiveness of this practice compared with untreated controls, and to identify which aspects of treatment regimens were most important for ensuring success.

Conclusions

Biofumigation generally reduced pest abundance, reduced incidence of disease, and increased crop yield by 30% over values seen in untreated controls. Neither the plant part incorporated, nor the method used to incorporate it, were important predictors of success. Contrary to our expectations, we found no evidence that solarization was beneficial, and only treatment regimens without solarization were generally effective. While treatment regimens varied, the most effective treatment combination that we identified was the incorporation of young Eruca and Raphanus plants, with high glucosinolate concentrations, applied at high doses with short exposure times to suppress the nematode Globodera in Solanaceous plants. Each component of this regimen would likely increase the effectiveness of biofumigation efforts aimed at other soil pests.

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Abbreviations

ITCs:

Isothiocyanates

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Acknowledgments

Comments from three anonymous reviewers substantially improved this manuscript.

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Correspondence to E Kathryn Morris.

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Responsible Editor: Anton Wasson .

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Morris, E.K., Fletcher, R. & Veresoglou, S.D. Effective methods of biofumigation: a meta-analysis. Plant Soil 446, 379–392 (2020). https://doi.org/10.1007/s11104-019-04352-y

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  • DOI: https://doi.org/10.1007/s11104-019-04352-y

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