Yes over a long period of timee
Early spring most likely. I don't recommend doing so in the winter, it can get cold and blizzard-y.
quizalofop p ethyl is a grass selective herbicide and it WILL kill giant reed otherwise fluazifop will also kill it, not sure if you can buy it over the counter at hardware stores but farm supply eg landmark in Australia sell it.
will baking soda kill my grass
Just run over the grass several times a day and it will start to wear away.
yes, keep the pine needles from killing grass by raking them up as often as possible. They act like a blanket over the grass cutting off air, light, and water.
Best bet, I feel is just to pull it out, or spot spray with something that kills grass. If it has taken over your lawn, you may want to kill the whole yard and start over in the fall. I may have to do that with my side yard because the grass I planted this spring did not come up well in some spots. Three keys to getting rid of it is to plant plenty of seed so you have a thick bed of grass when it comes up. Water it well so the maximum amount of seeds germinate. Then, most importantly, put down a pre-emergent in the fall and again in the spring. The pre-emergent should prevent any barn grass seeds from germinating. I couldn't do this because I plan to over-seed in the fall and the pre-emergent would keep the fescue from germinating. Now I have barn grass taking over.
Generally the summer heat will kill rye grass that is taking over. If it doesn't get hot enough in your area you can use a non persistent-contact herbicide made for weeds, not grass, and spray the rye grass. For more information on killing rye grass, visit http://www.ehow.com/how_6127641_kill-annual-rye-grass.html.
If your talking about alfalfa or timothy hay than they can have nibbles of it at four weeks, but if your talking about real green grass start giving it to them when there a year old, but when there over six years stop feeding them it. :)
Go into the console by pressing "~" and type: bot_kill
The field is grown over with grass
u suck start over