Nutrient Release Pattern and Greenhouse-Grown Swiss Chard Response to Biochar Inoculated with Vermicast

Figure 5

A two-dimensional principal component analysis biplot showing relationships among media treatments as active variables and plant growth components as active observations. Plant growth components were leaf greenness (LG), anthocyanin content (AC), plant height (PH), stem diameter (SD), leaf area (LA), and total edible leaf fresh weight (LFW) of Swiss chard (Beta vulgaris subsp. vulgaris) cv. Rhubarb chard as affected by biochar alone (Bioc), deionized water-inoculated biochar (DWB), solid vermicast-inoculated biochar (SVB), vermicast tea-inoculated biochar (VTB), and Promix-BX alone (Pro-BX) at the first (1) and the second (2) harvests, respectively.