Phytotoxicity of composted herbal pharmaceutical industry wastes.
This work demonstrates the phytotoxicity screening of composted herbal pharmaceutical industry waste (HPIW) using seed bioassay method. The composted industrial waste should be tested at lab scale prior to recommendation for land application. HPIW was mixed with soil to produce four treatments: T(1) (1:1), T(2) (1:2), T(3) (1:3), and T(4) (1:0) for toxicity screening using Pisum sativum seeds. After 72 h relative seed germination (RSG), relative root growth (RRG) and germination index (GI) were recorded. Seedlings were observed for further plant growth and tissue biochemistry (chlorophyll, soluble sugar, starch, carotenoid, and protein) estimation. RSG, RRG, and GI values were better in T(1) and T(2) than others. GI was in the ranges of 36.62 % (T(4)) to 170.38 % (T(2)). The seedling growth and biochemical parameters were better in seedling obtained from potting media containing low proportion of HPIW (i.e., T(1) and T(2)). Results clearly suggested that composted HPIW may be utilized effectively for crop production after dilution under sustainable farming system program.
School of Environment & Natural Resources, Doon University, Dehradun, 248001, India. suthariitd@gmail.com
Surindra
S
Suthar
Deepika
D
Singh
D001681:Biological Assay; D004345:Drug Industry; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D018525:Germination / Q000187:drug effects; D007220:Industrial Waste; D018532:Pisum sativum / Q000187:drug effects* / Q000378:metabolism; D010940:Plant Proteins / Q000378:metabolism; D010946:Plants, Medicinal / Q000737:chemistry*; D012037:Refuse Disposal / Q000379:methods*; D036226:Seedlings / Q000187:drug effects / Q000378:metabolism; D012639:Seeds / Q000187:drug effects; D012987:Soil
D007220:Industrial Waste; D010940:Plant Proteins; D012987:Soil