Herbicidal compositions containing N-phosphonomethyl glycine and an auxin herbicide

An aqueous herbicidal concentrate composition comprising:

• (a) glyphosate, predominantly in the form of the potassium salt thereof, in a concentration of at least 65 grams acid equivalent per liter;
• (b) an auxin herbicide component comprising one or more auxin herbicides selected from the group consisting of 2,4-D, 2,4-DB, dichlorprop, MCPA, MCPB, mecoprop, dicamba, picloram, quniclorac and agriculturally acceptable salts or esters thereof;
• and
• (c) a first surfactant component in solution or stable suspension, emulsion or dispersion and comprising one or more surfactants selected from the group consisting of:
• (i) dialkoxylated quaternary ammonium salts having the formula:
• wherein R11 is hydrocarbyl or substituted hydrocarbyl having from 1 to about 30 carbon atoms, R12 in each of the) (R12O)x and (R12O)y groups is independently C2-C4 alkylene, R13 is hydrogen, or a linear or branched alkyl group having from 1 to about 4 carbon atoms, R14 hydrocarbyl or substituted hydrocarbyl having from 1 to about 30 carbon atoms, x and y are independently an average number from 1 to about 40, and X− is an agriculturally acceptable anion;
• (ii) monoalkoxylated quaternary ammonium salts having the formula:
• wherein R21 and R25 are independently hydrogen or hydrocarbyl or substituted hydrocarbyl having from 1 to about 30 carbon atoms, R24 is hydrocarbyl or substituted hydrocarbyl having from 1 to about 30 carbon atoms, R22 in each of the (R22O)x2 groups is independently C2-C4 alkylene, R23 is hydrogen, or a linear or branched alkyl group having from 1 to about 30 carbon atoms, x is an average number from 1 to about 60, and X− is an agriculturally acceptable anion;
• (iii) quaternary ammonium salts having the formula:
• wherein R31, R33 and R34 are independently hydrogen or hydrocarbyl or substituted hydrocarbyl having from 1 to about 30 carbon atoms, R32 is hydrocarbyl or substituted hydrocarbyl having from 1 to about 30 carbon atoms, and X− is an agriculturally acceptable anion;
• (iv) ether amines having the formula:
• wherein R41 is hydrocarbyl or substituted hydrocarbyl having from 1 to about 30 carbon atoms;
• R42 is hydrocarbylene or substituted hydrocarbylene having from 2 to about 30 carbon atoms;
• R43 and R44 are independently hydrogen, hydrocarbyl or substituted hydrocarbyl having from 1 to about 30 carbon atoms, or —(R45O)x4R46, R45 in each of the (R45O)x4 groups is independently C2-C4 alkylene, R46 is hydrogen, or a linear or branched alkyl group having from 1 to about 4 carbon atoms, and x4 is an average number from 1 to about 50;
• (v) amine oxides having the formula:
• wherein R51, R52 and R53 are independently hydrogen, hydrocarbyl or substituted hydrocarbyl, —(R54O)x5R55, or —R56 (OR54)x5OR55, R54 in each of the (R54O)x5 groups is independently C2-C4 alkylene, R55 is hydrogen, or a linear or branched alkyl group having from 1 to about 30 carbon atoms, R56 is hydrocarbylene or substituted hydrocarbylene having from 2 to about 6 carbon atoms, x5 is an average number from 1 to about 50, and the total number of carbon atoms in R51, R52 and R53 is at least 8;
• (vi) alkyl alkoxylated phosphates having the formula:
• wherein R81 and R83 are independently a linear or branched alkyl, linear or branched alkenyl, linear or branched alkynyl, aryl, or aralkyl group having from about 4 to about 30 carbon atoms;
• R82 in each of the (R82O)m and the (R82O)n groups is independently C2-C4 alkylene;
• and m and n are independently from 1 to about 30;
• (vii) alkyl alkoxylated phosphates having the formula:
• wherein R91 is a linear or branched alkyl, linear or branched alkenyl, linear or branched alkynyl, aryl, or aralkyl group having from about 8 to about 30 carbon atoms;
• R92 in each of the (R92O)a groups is independently C2-C4 alkylene;
• and a is from 1 to about 30;
• and
• (viii) alkylpolyglycosides having the formula:
• [R101—(R104)q-(sug)uOH]v (11)
• where R101 is hydrogen or C1-28 hydrocarbyl, R104 is hydrogen or C1-4 hydrocarbyl, q is 0 or 1, sug is (i) an open or cyclic structure derived from sugars or (ii) a hydroxyalkyl, polyhydroxyalkyl or poly(hydroxyalkyl)alkyl group, u is an average number from 1 to about 2, and v is an integer from 1 to 3.