Zinc (Zn) immobilization by two distinct biochars in soil, together with concomitant alleviation
of phytotoxic responses in Ficus elastica Roxb. ex Hornem., were examined. Rooted cuttings
of F. elastica were grown in 880 mg kg− 1 Zn-spiked sandy soil amended with grain husk
(GH) or cattle manure (CM) biochar at 0, 10, 30 and 50 g kg− 1 soil for a period of 6 months.
Addition of both GH and CM biochars had significant positive impacts on physiological
parameters such as plant growth, leaf relative water content, photosynthetic pigments and …