Fig. 4.

Correlation analysis of measured parameters of tobacco plants under various levels of soil applied biochar and peatmoss (with and without) and drought stress in pot trial experiment. NOL = number of leaves; LL = leaf length; LW = leaf width; PH = plant height; LA = leaf area; SFW = shoot fresh weight; SDW = shoot dry weight; RFW = root fresh weight; RDW = Root dry weight; MDA = malonaldehyde content; PRO = proline content; SP = soluble proteins; TCHL = total chlorophyll content; SOD = superoxide dismutase activity; CAT = catalase activity; POD = peroxidase activity; SS = soluble sugar content; APX = ascorbate activity; LK = leaf K content; L Cl = leaf chloride content; NC = nicotine content