Journal
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
Volume 11, Issue 1, Pages 82-94Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/15226510802363535
Keywords
Elsholtzia splendens; compost; wheat; Cu; Zn; phytoremediation
Categories
Funding
- Major State Basic Research and Development Program
- People's Republic of China [2002CB410809]
- Chinese Academy of Sciences [KZCX3-SW-429-2]
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A pot experiment and a field experiment were conducted to investigate Cu-enriched composts made from Elsholtzia splendens plants as basal fertilizers to correct Cu deficiency in winter wheat (Triticum aestivum L.) grown in Cu-deficient soils. An application of the compost significantly increased plant height, biomass, grain yield, and 1000-grain weight. In the pot experiment, plant height and shoot biomass in the 2% Cu-rich compost treatment increased 0.8- and 5.2-fold compared with the chemical fertilizer treatment at the mature stage. Compared to chemical fertilizer control, the 2% Cu-enriched compost addition increased grain yield per pot by about 9.5-fold and 1000-grain weight by about 50%. In the field study, the compost also showed stimulatory effects on plant growth and grain yield. The results indicate that composting E. splendens plants grown in a Cu-contaminated soil and then applying the compost to a Cu-deficient soil may be an effective technique for the remediation of contaminated soils and redistribution of the copper as a plant nutrient for copper-deficient soils.
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