Effects of Red Mud Addition in Soil Fertilized with Cowdung Manure on Growth Performance and Metal Accumulations in Brassica juncea Cultivars Kranti and Pusa Bold
2019
Gautam, Meenu | Agrawal, Madhoolika
Red mud (RM) with organic manure may offer suitable substratum to support plant growth. The present study was conducted to evaluate the effects of 0, 5, 10 and 15% (w/w) RM additions in soil fertilized with cowdung manure (soil: manure: 2:1 w/w) on available metal contents, growth performance and metal accumulation in Brassica juncea cultivars Kranti and Pusa Bold. Increasing RM concentrations in manure-amended soil caused a significant increase in total metal contents but their phytoavailable contents decreased. A significant increase in plant growth performance and seed yield was observed up to 10% RM treatment compared to the control (without RM and manure). Maximum increase in seed yield (140.5%) of Pusa Bold and Kranti (120.3%) was found under 10% RM treatment. Metal contents in seeds were within the FAO/WHO safe limits. The study suggests utilization of 10% (w/w) RM in soil fertilized with cowdung manure for cultivation of Kranti and Pusa Bold. Based on plant performance, the study encourages the cultivation of Pusa Bold.
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