Autoclaving is at least as effective as gamma irradiation for biotic clearing and intentional microbial recolonization of soil.

We did observe a marginally significant interaction between soil type and sterilization method ( F 1,30 = 2, R 2 = 0.04, P = 0.05), and a three-way interaction between soil type, sterilization method, and wash treatment ( F 1,30 = 2, R 2 = 0.04, P = 0.05), but they only explained a minor part of the composition variance ( R 2 = 0.04).

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