V. Braga

Short-term usage of sewage sludge as organic fertilizer to sugarcane in a tropical soil bears little threat of heavy metal contamination.

Zhenli He, T. Nogueira, C. H. Abreu, 2013, Journal of environmental management.

Sewage sludge as nitrogen and phosphorus source for cane-plant and first ratoon crops.

D. Perecin, A. Franco, F. C. Oliveira, 2010 .

Short-term usage of sewage sludge as organic fertilizer to sugarcane in a tropical soil bears little threat of heavy metal contamination.

Zhenli He, T. Nogueira, C. H. Abreu, 2013, Journal of environmental management.