Figure 1.
Optimal nutritive concentration of boron (mg) for pea plants (mg dry weight) as demonstrated by their growth maximum (after Bertrand, 1962).
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.