Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Effects of N application doses on the dynamic changes in the kernel N content in grains of purple waxy maize on different days after pollination. Different lowercase letters denote significant differences between N rates at the p < 0.05 level. The error bar denotes standard error based on 3 data.
