Herbicidal compositions and methods of use thereof
The present invention is directed to an herbicidal composition comprising metribuzin, a salting-out agent and polyvinyl alcohol. The present invention is further directed to a method of controlling weeds comprising applying a composition of the present invention to the weeds or an area in need of weed control.
1 . A homogenous herbicidal solution comprising:
from about 10% to about 20% w/w metribuzin;
from about 1% to about 6% w/w of a salt selected from ammonium sulfate, ammonium acetate and potassium citrate; and
from about 1% to about 5% w/w polyvinyl alcohol,
wherein w/w denotes weight by total weight of the solution.
2 . The solution of claim 1 further comprising from about 1% to about 30% w/w of flumioxazin.
3 . The solution of claim 1 , wherein:
metribuzin is present at a concentration from about 15% to about 17% w/w;
the salt is ammonium sulfate at a concentration from about 1.8% to about 3.5% w/w; and
polyvinyl alcohol is present at a concentration from about 1.2% to about 3.5% w/w.
4 . The solution of claim 3 further comprising flumioxazin is present at a concentration from about 4% to about 24% w/w.
5 . The solution of claim 1 , further comprising:
from about 3% to about 4% w/w of a 35% acrylic graft copolymer;
from about 1.5% to about 2% w/w of an alkylphenol ethoxylate free nonionic wetter;
about 4% w/w propylene glycol;
about 0.1% w/w of a silicone emulsion;
about 0.15% w/w of a mixture of 1.15% 5-chloro-2-methyl-4-isothiazolin-3-one and 0.35% 2-methyl-4-isothiazolin-3-one; and
about 1% w/w magnesium aluminum silicate.