Late Split-Application with Reduced Nitrogen Fertilizer Increases Yield by Mediating Source-Sink Relations during the Grain Filling Stage in Summer Maize.

ABSTRACT: In the North China Plain, the excessive application of nitrogen (N) fertilizer for ensuring high yield and a single application at sowing for simplifying management in farmer practice lead to low N use efficiency and environmental risk in maize (Zea mays L.) production. However, it is unclear whether and how late split application with a lower level of N fertilizer influences maize yield. To address this question, a two-year field experiment was conducted with two commercial maize cultivars (Zhengdan 958 and Denghai 605) using a lower level of N input (180 kg ha^-1) by setting up single application at sowing and split application at sowing and later stages (V12, R1, and R2) with four different ratios, respectively. The maize yield with split-applied 180 kg ha^-1

SUBMITTER: Deng T 

PROVIDER: S-EPMC9920228 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature