Fig. 5

FTIR analysis of secondary metabolites in wheat (Triticum aestivum L.) roots grown in non-amended, 2.5% biochar, 2.5% vermicompost, 2.5% Perlite and 2.5% activated biochar amended soil under a) 80% moisture b) 50% moisture, and non-amended, 5% biochar, 5% vermicompost, 5% Perlite and 5% activated biochar amended under c) 80% moisture d) 50% moisture.