Abstract
Magnesium ammonium phosphate (MAP) was recovered from swine wastewater and the feasibility of reutilizing it as a slowly-releasing fertilizer was evaluated. Maize growth was investigated with normal and high application rates of MAP and a fused super phosphate (FSP) fertilizer. A total of 5 treatments ( = control, = MAP based on 30 kg P , = FSP based on 30 kg P +urea equivalent to nitrogen of MAP applied in , = MAP based on 40 kg P , = FSP based on 40 kg P +urea equivalent to nitrogen of MAP applied in ) were arranged with 3 replications. In the case of height and circumference, significant differences were found between controls and treated maize plants (p ) than other treatments. emission was found to be lower in MAP treated soil than that from FSP-urea treated soil, which might be due to the slow releasing pattern of MAP. It could be assumed from the results that MAP would be an eco-friendly sustainable fertilizer source for crop production.
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