is your crabgrass watching you?

Crabgrass will get a strong assist from global warming in its campaign to take over your lawn.

That’s the unexpected finding of a study investigating a very different aspect of lawn biology: Neeta S. Bijoor, her graduate advisor Diane E. Pataki of the University of California, Irvine, and two colleagues set out to determine how warming affects lawns’ emission of nitrous oxide (N2O), a greenhouse gas 300 times more powerful than carbon dioxide.

In contrast to fescue and most other crop plants, crabgrass and many other weeds photosynthesize with greater efficiency the warmer it gets, so they have been predicted to proliferate as temperatures rise.

Live Science, 3 Dec 2008