CPC A01N 25/28 (2013.01) [A01N 25/04 (2013.01); A01N 37/10 (2013.01); A01N 37/22 (2013.01); A01N 43/707 (2013.01)] | 21 Claims |
1. A herbicidal microcapsule comprising:
a core material comprising an acetamide herbicide and a second herbicide comprising diflufenican, wherein at least 20 wt % of the second herbicide is dissolved in the acetamide herbicide and wherein the weight ratio of the acetamide herbicide to the second herbicide in the core material is at least about 2:1; and
a shell wall encapsulating the core material, wherein the shell wall comprises a polyurea formed by polymerization of a polyisocyanate component comprising a polyisocyanate or mixture of polyisocyanates and a polyamine component comprising a polyamine or mixture of polyamines to form the polyurea, wherein the polyisocyanate comprises an aliphatic polyisocyanate.
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