Herbicidal compositions containing glyphosate and bipyridilium

An aqueous herbicidal composition useful for killing or controlling the growth of unwanted plants, comprising:

• an active component consisting essentially of glyphosate or a herbicidal derivative thereof and a bipyridilium or a herbicidal derivative thereof;
• and
• at least one surfactant;
• wherein the glyphosate (acid equivalent basis) and the bipyridilium (cation equivalent basis) are present in a weight ratio of between 26:1 and about 100:1, and the glyphosate (acid equivalent basis) and the surfactant are present in a weight ratio of between about 0.7:1 and about 48:1.

An aqueous herbicidal composition useful for killing or controlling the growth of unwanted plants, comprising:

• an active component consisting essentially of glyphosate or a herbicidal derivative thereof and a bipyridilium or a herbicidal derivative thereof;
• and
• at least one surfactant in a concentration sufficient to enhance glyphosate absorption and translocation within a plant before leaf damage induced by the bipyridilium would interfere with further absorption and translocation of glyphosate;
• wherein the glyphosate (acid equivalent basis) and the bipyridilium (cation equivalent basis) are present in a weight ratio of between 16:1 and about 100:1, and the composition optionally contains an alkylpolyglycoside, the nature and concentration of said alkylpolyglycoside by itself being insufficient to enhance glyphosate absorption and translocation within a plant before leaf damage induced by the bipyridilium would interfere with further absorption and translocation of glyphosate.

An aqueous herbicidal liquid concentrate which may be diluted with water to provide an aqueous herbicidal application mixture for application to the foliage of a plant, said concentrate comprising:

• an active component consisting essentially of glyphosate or a herbicidal derivative thereof in a concentration of at least 120 grams acid equivalent per liter and a bipyridilium or a herbicidal derivative thereof;
• and
• at least one surfactant, the nature and concentration of said surfactant being such that, upon applying said application mixture to the foliage of a plant, glyphosate absorption and translocation within the plant is enhanced before leaf damage induced by the bipyridilium would interfere with further absorption and translocation of glyphosate;
• wherein the glyphosate (acid equivalent basis) and the bipyridilium (cation equivalent basis) are present in a weight ratio of between about 1:1 and about 100:1.

An aqueous herbicidal liquid concentrate which may be diluted with water to provide an aqueous herbicidal application mixture for application to the foliage of a plant, said concentrate comprising:

• an active component consisting essentially of glyphosate or a herbicidal derivative thereof and a bipyridilium or a herbicidal derivative thereof;
• and
• at least one surfactant, the nature and concentration of said surfactant being such that, upon applying said application mixture to the foliage of a plant, glyphosate absorption and translocation within the plant is enhanced before leaf damage induced by the bipyridilium would interfere with further absorption and translocation of glyphosate;
• wherein the glyphosate (acid equivalent basis) and the bipyridilium (cation equivalent basis) are present in a weight ratio of between 26:1 and about 100:1.

An aqueous herbicidal liquid concentrate which may be diluted with water to provide an aqueous herbicidal application mixture for application to the foliage of a plant, said concentrate comprising:

• an active component consisting essentially of glyphosate or a herbicidal derivative thereof in a concentration of at least 120 grams acid equivalent per liter and a bipyridilium or a herbicidal derivative thereof;
• and
• at least one surfactant;
• wherein the glyphosate (acid equivalent basis) and the bipyridilium (cation equivalent basis) are present in a weight ratio of between about 1:1 and about 100:1, and the glyphosate (acid equivalent basis) and the surfactant are present in a weight ratio of between about 0.5:1 and about 50:1.

An aqueous herbicidal liquid concentrate which may be diluted with water to provide an aqueous herbicidal application mixture for application to the foliage of a plant, said concentrate comprising:

• an active component consisting essentially of glyphosate or a herbicidal derivative thereof and a bipyridilium or a herbicidal derivative thereof;
• and
• at least one surfactant, the nature and concentration of said surfactant being such that, upon applying said application mixture to the foliage of a plant, glyphosate absorption and translocation within the plant is enhanced before leaf damage induced by the bipyridilium would interfere with further absorption and translocation of glyphosate;
• wherein the glyphosate (acid equivalent basis) and the bipyridilium (cation equivalent basis) are present in a weight ratio of between about 1:1 and about 100:1, and the concentrate optionally contains an alkylpolyglycoside, the nature and concentration of said alkylpolyglycoside by itself being insufficient to enhance glyphosate absorption and translocation within a plant before leaf damage induced by the bipyridilium would interfere with further absorption and translocation of glyphosate.

An aqueous herbicidal liquid concentrate which may be diluted with water to provide an aqueous herbicidal application mixture for application to the foliage of a plant, said concentrate comprising:

• an active component consisting essentially of glyphosate or a herbicidal derivative thereof and a bipyridilium or a herbicidal derivative thereof;
• and
• at least one surfactant, the nature and concentration of said surfactant being such that, upon applying said application mixture to the foliage of a plant, glyphosate absorption and translocation within the plant is enhanced before leaf damage induced by the bipyridilium would interfere with further absorption and translocation of glyphosate;
• wherein the glyphosate (acid equivalent basis) and the bipyridilium (cation equivalent basis) are present in a weight ratio of between about 1:1 and about 100:1, and the concentrate when free of dye or a coloring agent has a Gardner color value of not more than 10.

A herbicidal particulate solid concentrate which may be dissolved or dispersed in water to provide an aqueous herbicidal application mixture for application to the foliage of a plant, said concentrate comprising:

• an active component consisting essentially of glyphosate or a herbicidal derivative thereof in a concentration of at least about 50% by weight of said concentrate and a bipyridilium or a herbicidal derivative thereof;
• and
• at least one surfactant, the nature and concentration of said surfactant being such that, upon applying said application mixture to the foliage of a plant, glyphosate absorption and translocation within the plant is enhanced before leaf damage induced by the bipyridilium would interfere with further absorption and translocation of glyphosate;
• wherein the glyphosate (acid equivalent basis) and the bipyridilium (cation equivalent basis) are present in a weight ratio of between about 1:1 and about 100:1.

A herbicidal particulate solid concentrate which may be dissolved or dispersed in water to provide an aqueous herbicidal application mixture for application to the foliage of a plant, said concentrate comprising:

• glyphosate or a herbicidal derivative thereof in a concentration of at least about 50% by weight of said concentrate;
• an active component consisting essentially of glyphosate or a herbicidal derivative thereof and a bipyridilium or a herbicidal derivative thereof;
• and
• at least one surfactant;
• wherein the glyphosate (acid equivalent basis) and the bipyridilium (cation equivalent basis) are present in a weight ratio of between about 1:1 and about 100:1, and the glyphosate (acid equivalent basis) and the surfactant are present in a weight ratio of between about 1:1 and about 40:1.