Brizeen nitrate

From Memory Alpha, the free Star Trek reference.

Brizeen nitrate is a substance that helps in fertilization of land.

Grand Nagus Zek offered Bajor, on the behalf of Kira Nerys, 50,000 kilos of brizeen nitrate, in exchange for allowing him to hold a trade conference on Deep Space 9 with the Dosi.

Nerys noted that with a quantity of that size, Bajor could to fertilize the entire northern peninsula. (DS9: "Rules of Acquisition")