The cadmium (Cd) uptake and accumulation in the cereal crops like wheat and rice are a serious concern in recent years. Application of various organic amendments in Cd-contaminated soil is an effective technique in management of crop growth and health as organic amendments not only promote plant’s growth but also check Cd translocation in plants. For this purpose, 3 organic amendments (wheat straw biochar (WSB), cotton stick biochar (CSB), and compost comp) were applied @ 0.5% (under randomized complete block design with 4 replicates) in sewage water fed Cd-contaminated soil for effective locking of Cd in soil being cultivated with wheat and rice. The experiment was completed in almost 1 year (December 2014 to November 2015). Our results revealed that all amendments can enhance plant growth and physiology and decrease soil bioavailable Cd contents, but WSB was most prominent among 3 applied. Our results conclude that WSB can enhance straw yield (29.20 and 26.78% for wheat and rice) and grain yield (22.69% and 26.70%) and boast all physiological attributes (chlorophyll contents, stomatal/substomatal conductance, photosynthetic and transpiration rate). Application of WSB decreased post-harvest bioavailable soil Cd contents after wheat and rice crops to 56.37, 48.99% and 7.63, 26.78% in 0–15-cm and 15–30-cm soil depths, respectively. The WSB also decreased Cd translocation in grain, thus helping in decreasing the health risk index (HRI) associated with Cd-contaminated grain consumptions. For economics, amendment application in wheat crops increases its cost, so the benefit–cost ratio was observed to be less than 1. But for upcoming cropping seasons, residues of amendments will still be actively influencing plant growth and yield, so we expect a net higher benefit–cost ratio proving long-lasting use of amendments (especially WSB) a net beneficial approach.

近年来，谷物和小麦等水稻作物中镉的吸收和积累受到严重关注。在受Cd污染的土壤中施用各种有机改良剂是管理作物生长和健康的有效技术，因为有机改良剂不仅可以促进植物的生长，还可以检查植物中Cd的转运。为此，将3种有机改良剂（小麦秸秆生物炭（WSB），棉棒生物炭（CSB）和堆肥肥料）以0.5％的比例（在随机完整块设计下，重复四次）应用在受Cd污染的土壤中。有效地将镉锁定在小麦和水稻种植的土壤中。该实验在将近一年的时间内（2014年12月至2015年11月）完成。我们的结果表明，所有的改良剂都能促进植物的生长和生理，并降低土壤中可利用的Cd含量，但在3个应用中，WSB最为突出。我们的结果表明，WSB可以提高稻草的产量（小麦和水稻分别为29.20和26.78％）和谷物产量（22.69％和26.70％），并具有所有生理特性（叶绿素含量，气孔/气孔导度，光合和蒸腾速率）。在小麦和水稻作物种植后，在0–15 cm和15–30 cm土层中，WSB的施用将小麦和水稻作物收获后的土壤有效Cd含量分别降低至56.37％，48.99％和7.63％，26.78％。WSB还减少了谷物中Cd的转运，从而有助于减少与Cd污染的谷物消费相关的健康风险指数（HRI）。就经济学而言，在小麦作物中应用修正案会增加其成本，因此观察到的收益/成本比小于1。但是对于即将到来的作物季节，