Grazon or curtail M will work to kill clover ( UFA has them) depending how much land you have you can either hire a sprayer or use a quad sprayer....both chemicals are fairly dangerous so I wouldn't recommend hand spraying. When we used Curtail M they recommend your horses off the pasture for at least a week after spraying. Both chemicals are quite expensive, the grazon costs more but last longer. Spraying will not kill the clover forever, it will come back within a few years, especially in low spots or after a wet year. We need to spray every 3 years or so . For best results you should be spraying when it is in bloom......so late may where you live ( thats what ufa just told me the other day) last time we sprayed it was july but it still worked, we did not know how much clover we had until that late in the year. The grazon and curtail will kill all broad leaf ( clover, alfalfa) but will not kill grass ( timothy, brome, orchard grass) If you want to do it right the best way is to spray it to kill the clover, then work the field for a few years and leave it in summer fallow....then seed it to crop for a few years... ( barley, oats) then seed it back to hay....and hopefully then you may have a chance of killing the clover. We live in TP and we have had a really hard time getting rid of it. It is rotten awful stuff to deal with.....do you have regular clover or alsike clover? I have had horses clover poison in the past and wouldn't wish it on anyone. Unfortunately it takes time to do it right. we had an area with trees like yours we got a big breaking disk and broke it and then seeded it, it took a year of no horses on it for the pasture to come. If you turn horses out on it too soon the grass wont come.
Oh yeah forgot to mention, County of GP rents truck sprayers for 50 bucks a day, just another option.
Last edited by porky
on Sun Apr 22, 2012 7:25 pm, edited 2 times in total.