Environmental sustainability of corn (Zea mays L.) production on the basis of nitrogen fertilizer application: The case of Lahijan, Iran

A field experiment was conducted in Lahijan, Iran to determine the environmental impact of four corn (Zea mays L.) genotypes production under three nitrogen (N) fertilizer application rates using the life cycle assessment (LCA) methodology. Treatments consisted of three N levels (300, 400, and 500 kg ha−1 of urea) and four corn genotypes (KSC 647, KSC 700, KSC 704, and a local variety). Six impact categories, i.e., global warming, acidification,...