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.
Dry weight (A) and root/shoot ratios (B) of rice plants fertilized at different nitrogen (N) levels (0.72, 1.44, and 5.76 mM) with or without silicon (Si) amendment (Si–, Si+). Values are mean ± SE (n = 10). Letters above bars indicate significant differences among treatments (Tukey’s multiple range test, P < 0.05).
