The efficiency of composted municipal solid waste and sewage sludge to promote wheat (Triticum durum) growth was investigated under greenhouse conditions. Plants were cultivated under 0, 40, 100, 200, and 300 t ha-1 of MSW compost or S. sludge. Dry weight, heavy metals accumulation, and leaf antioxidant activities (ascorbate peroxidase APX, glutathione reductase (GR), catalase (CAT) and superoxide dismutase (SOD)) were determined. Plant showed a significant improvement of biomass production at 40 and especially 100 t ha -1 of compost amendment (48 and 78% respectively). However under S. sludge treatment the increase did not exceeded 18% at the two doses 40 and 100 t ha -1. At higher amendment doses plants exhibited increasing heavy metal concentrations in shoot and root, correlated with yield decline. In addition, antioxidant activities showed a proportional stimulation with 200 and 300 t ha -1 of compost, and with 200 and 300 t ha -1 of S. sludge (APX: 26, 24, 24, and 20%; GR: 90, 97, 82 and 100% CAT: 31, 51, 36, and 40%; SOD: 30, 41, 37 and 36% respectively). The study reveals that, in greenhouse experiment, 100 t ha -1 of MSW compost seems to be the optimal dose for wheat growth without adverse effects.
Assessment of municipal solid waste compost and sewage sludge application using wheat (Triticum durum) antioxidante response
Iannelli MA;Massacci A;
2009
Abstract
The efficiency of composted municipal solid waste and sewage sludge to promote wheat (Triticum durum) growth was investigated under greenhouse conditions. Plants were cultivated under 0, 40, 100, 200, and 300 t ha-1 of MSW compost or S. sludge. Dry weight, heavy metals accumulation, and leaf antioxidant activities (ascorbate peroxidase APX, glutathione reductase (GR), catalase (CAT) and superoxide dismutase (SOD)) were determined. Plant showed a significant improvement of biomass production at 40 and especially 100 t ha -1 of compost amendment (48 and 78% respectively). However under S. sludge treatment the increase did not exceeded 18% at the two doses 40 and 100 t ha -1. At higher amendment doses plants exhibited increasing heavy metal concentrations in shoot and root, correlated with yield decline. In addition, antioxidant activities showed a proportional stimulation with 200 and 300 t ha -1 of compost, and with 200 and 300 t ha -1 of S. sludge (APX: 26, 24, 24, and 20%; GR: 90, 97, 82 and 100% CAT: 31, 51, 36, and 40%; SOD: 30, 41, 37 and 36% respectively). The study reveals that, in greenhouse experiment, 100 t ha -1 of MSW compost seems to be the optimal dose for wheat growth without adverse effects.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.