SAFENING COMPOSITION OF 6-(TRISUBSTITUTED PHENYL)-4-AMINO-2-PYRIDINECARBOXYLATE HERBICIDES AND CLOQUINTOCET-MEXYL FOR CEREAL CROPS

• US 20100130363A1
• Filed: 11/18/2009
• Published: 05/27/2010
• Est. Priority Date: 11/24/2008
• Status: Active Grant

• Current Assignee: Corteva Agriscience LLC (Corteva, Inc.)
• Original Assignee: Dow Agrosciences LLC (Corteva, Inc.)
• Inventors: Schmitzer, Paul R., Satchivi, Norbert M.
• Granted Patent: US 8,609,586 B2
• Time in Patent Office: Days
• US Class Current: 504/105
• CPC Class Codes: A01N 25/32 Ingredients for reducing the noxious effect of the active substances to organisms other than pests, e.g. toxicity reducing compositions, self-destructing compositions
• CPC Class Codes: A01N 43/40 six-membered rings

Abstract

Herbicidal injury caused by 6-(trisubstituted phenyl)-4-amino-2-pyridinecarboxylates in wheat and barley is reduced with the use of low rates of cloquintocet.

Claims

1. A composition for protecting wheat and barley from the harmful effects of a 6-(trisubstituted phenyl)-4-amino-2-pyridine-carboxylate herbicide of the formula (I)

wherein hal represents F, Cl or Br, and R represents methyl or ethyl,

and its agriculturally acceptable salt, ester and amide derivatives which comprises, in addition to the 6-(trisubstituted phenyl)-4-amino-2-pyridinecarboxylate herbicide, a safener from the quinolinyloxyacetate family of chemicals in which the weight ratio of 6-(trisubstituted aryl)-4-amino-2-pyridinecarboxylate herbicide to quinolinyloxyacetate safener is between about 2:

1 to about 64;

1.

2. The composition of claim 1 in which the 6-(trisubstituted phenyl)-4-amino-2-pyridinecarboxylate herbicide is a 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)-2-pyridinecarboxylic acid derivative or a 4-amino-3-chloro-6-(2,4-dichloro-3-methoxy-phenyl)-2-pyridinecarboxylic acid derivative.

3. The composition of claim 1 in which the safener is cloquintocet mexyl.

4. The composition of claim 1 in which the weight ratio of the 6-(trisubstituted phenyl)-4-amino-2-pyridinecarboxylate herbicide to the safener is between about 4:

1 and about 32;

1.

5. A method of protecting wheat and barley from the harmful effects of a 6-(trisubstituted phenyl)-4-amino-2-pyridinecarboxylate herbicide of the formula (I)

wherein hal represents F, Cl or Br, and R represents methyl or ethyl,

and its agriculturally acceptable salt, ester and amide derivatives which comprises contacting the wheat and barley with, or applying to the area under cultivation, a safener selected from the quinolinyloxyacetate family of chemicals in which the weight ratio of 6-(trisubstituted aryl)-4-amino-2-pyridinecarboxylate herbicide to quinolinyloxyacetate safener is between about 2:

1 to about 64;

1.