Improving maize carbon and nitrogen metabolic pathways and yield with nitrogen application rate and nitrogen forms.

ABSTRACT: Reduced fertilizer efficiency caused by excessive use of nitrogen (N) fertilizer is a major problem in agriculture and a hot topic of research. Most studies have focused on the effect of N application rate on N efficiency, whereas there are limited studies on changing the N form to improve N yield and efficiency. Here, the effects of different N application rates and nitrate-to-ammonium N ratios on post-anthesis carbon (C) and N metabolism and maize yield under shallow-buried drip irrigation were investigated. Two rates of N application (210 kg·ha^-1 (NA1) and 300 kg·ha^-1 (NA2)) and three nitrate-to-ammonium N ratios (2:1 (NF1), 3:1 (NF2), and 4:1 (NF3)) were utilized. Post-anthesis photosynthetic characteristics, activities of key enzymes in photosynthetic C and N met

SUBMITTER: Meng F 

PROVIDER: S-EPMC10768660 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature