In article , Fred
writes
Instead of no-freeze tomatoes or disease-resistant crops we'd have crops
which grow in a quarter the time or yield many times the usual amounts in
the same cultivated acreage and with no additional nitrogen required and no
danger of cross-species gene or resistance transfer.

If a plant grows twice as fast, it'll need twice as much nitrogen.
Several essential classes of biochemicals contain nitrogen, including
proteins and nucleic acids.

There's still the dangers of cross-breeding with wild species. A weed
which outgrows other plants would be a severe danger to the ecosystem.
--
Stewart Robert Hinsley