Concentrated phosphorus fertilizers are disclosed that comprise a buffered composition of an organic acid and salts thereof and a phosphorous-containing acid and salts thereof. The concentrated phosphorus fertilizers can be diluted with water of pH ranging from about 6.5 to about 8.5 at ratios of concentrate to water at about 1:40 to about 1:600 to result in a fertilizer having a pH in the range acceptable for foliar uptake of phosphorus.
This is a continuation of U.S. application Ser. No. 10/686,411, filed Oct. 14, 2003, now U.S. Pat. No. 6,896,714, which issued May 25, 2005, which is a continuation of U.S. Application No. 10/341,966, filed Jan. 13, 2003, now U.S. Pat. No. 6,645,268 B2, which is a continuation of U.S. application Ser. No. 09/637,621, filed Aug. 11, 2000, now U.S. Pat. No. 6,929,673, which issued Aug. 16, 2005, which is a continuation of U.S. application Ser. No. 09/126,233, filed Jul. 30, 1998, now U.S. Pat. No. 6,113,665, which is a continuation of U.S. application Ser. No. 08/642,574, filed May 3, 1996, now U.S. Pat. No. 5,830,255, which issued Nov. 3, 1998, which application was re-examined as B1 5,830,255 (certificate issued Jul. 11, 2000), which is a continuation of U.S. application Ser. No. 08/192,508, filed Feb. 7, 1994, now U.S. Pat. No. 5,514,200, which issued May 7, 1996
