Comparative assessment ofBrassica pekinensisL. genotypes for phytoavoidation of nitrate, cadmium and lead in multi-pollutant field

Information is needed for comparative assessment and agronomic practices for phytoavoidation in multi-pollutant field. A field study was conducted to explore 97Brassica pekinensisL. genotypes with permissible limit of contaminants growing in a severely Cd, moderately nitrate and slightly Pb multi-polluted field. Thirteen genotypes, i.e.KGZY,CXQW,CAIB,JINL,JQIN,JFEN,WMQF,XLSH,TAIK,BJXS,JUKA,XYJQandGQBW, were identified with permissible limit for nitrate, Cd and Pb based on their resistance to heavy metal and nitrate accumulation in leaves when grown in co-contaminated soils. Furthermore, the correlation between essential and toxic elements concentrations in plant ofB. pekinensiswere inconsistent. Generally speaking, application of increasing Ca, K and S fertilizers in appropriate forms and dosages tended to increase the yield and quality ofB. pekinensiscultivated in multi-pollutant field.