Figure 7.
Effects of year × nitrogen application (a), year × cultivar (b), and cultivar × nitrogen application (c) on the copper content in soybean seeds.
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.