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.
Dependence of oxalic acid secretion on Al concentrations in Jiangxi and Shanxi. External solutions contained 0.5 mm CaCl2, pH 4.5, and a range of AlCl3 concentrations. Root exudates were collected after 6-h treatments. Organic acids were analyzed by HPLC. Data are means ± sd (n = 3).
