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Principle component analysis (PCA) of the bacterial potato rhizosphere community. PCA plot of the bacterial community in the potato rhizosphere in 2016 (A) and 2017 (B), respectively. PCA plot of the bacterial community in bulk soils in 2016 (C) and 2017 (D), respectively. CK, B150, B225, and B300 indicate the application rates of 0, 150, 225 and 300 kg·ha−1 of microbial product composed of a consortium of Bacillus subtilis and Trichoderma harzianum.
