Manufacture and use of agricultural spray adjuvants for hard water conditions
DCFirst Claim
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1. A water soluble glyphosate composition comprising:
- (a) an aqueous glyphosate solution comprising glyphosate or a salt thereof;
(b) a concentrated solution comprising sulfuric acid and a polyamine surfactant selected from tallow amine ethoxylate and coco amine ethoxylate combined in an agricultural spray solution; and
wherein said composition consists of a ratio of 1 quart to 2 gallons of (b) to 100 gallons of (a); and
wherein said composition has a pH above the PKa2 of glyphosate, and wherein better herbicidal efficacy is provided in comparison to 5-20 pounds ammonium sulfate (AMS) per 100 gallons of (a).
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Abstract
The invention pertains to a method for manufacture and use of pesticides or agricultural spray adjuvants that counteracts the effects of hard water cat ions on anionic pesticides when applied in water spray solutions. The disclosed agricultural spray adjuvants include glyphosate compositions comprising a strong mineral acid, such as sulfuric acid, and a polyamine surfactant, such as tallow amine or coco amine.
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Citations
10 Claims
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1. A water soluble glyphosate composition comprising:
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(a) an aqueous glyphosate solution comprising glyphosate or a salt thereof; (b) a concentrated solution comprising sulfuric acid and a polyamine surfactant selected from tallow amine ethoxylate and coco amine ethoxylate combined in an agricultural spray solution; and wherein said composition consists of a ratio of 1 quart to 2 gallons of (b) to 100 gallons of (a); and
wherein said composition has a pH above the PKa2 of glyphosate, and wherein better herbicidal efficacy is provided in comparison to 5-20 pounds ammonium sulfate (AMS) per 100 gallons of (a). - View Dependent Claims (2, 3, 4, 5)
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6. A water soluble glyphosate composition comprising:
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(a) an aqueous glyphosate solution comprising glyphosate or a salt thereof; (b) a concentrated solution comprising sulfuric acid and a polyamine surfactant selected from tallow amine ethoxylate and coco amine ethoxylate combined in an agricultural spray solution; wherein said composition does not contain ammonium sulfate (AMS); and wherein said composition consists of a ratio of 1 quart to 2 gallons of (b) to 100 gallons of (a); and
wherein said composition has a pH above the PKa2 of glyphosate, and wherein better herbicidal efficacy is provided in comparison to 5-20 pounds AMS per 100 gallons of (a), as measured by percent control of annual bluegrass. - View Dependent Claims (7, 8, 9, 10)
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Specification