JEQ Journal of Natural Resources and Life Sciences Education
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Fig. 7. Projection of the different sludges on the plane defined by the first two principal components; each sludge is represented by three aligned points: the middle point corresponds to the characterization by the two groups of variables ("B" plus one or two digits), with the extremities of the line corresponding respectively to the characterization by the group of composition variables (1) and the group of mineralization variables (2).





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The SCI Journals Agronomy Journal Crop Science
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