Sludge and compost from a wastewater treatment plant can be used as an alternative to commercial fertilisers according to a study in Alcazar de San Juan. The study used sewage sludge and compost from the Journal of Science of Food and Agriculture WWTP in Spain and compared the response of nutrient uptake in soil after applying them with that of soil which was treated with commercial fertiliser. They found no nutritional imbalances in either grain or straw of durum wheat, but did note that sewage sludge resulted in increased grain Zinc content and yield than the compost or artificial fertiliser.
Sludge and compost from a wastewater treatment plant can be used as an alternative to commercial fertilisers according to a study in the Journal of Science of Food and Agriculture. The study used sewage sludge and compost from Alcazar de San Juan WWTP in Spain and compared the response of nutrient uptake in soil after applying them with that of soil which was treated with commercial fertiliser. They found no nutritional imbalances in either grain or straw of durum wheat, but did note that sewage sludge resulted in increased grain Zinc content and yield than the compost or artificial fertiliser.