Methanol treated activated sludge as an agricultural chemical carrier
AssigneeThe United States of America as represented by the Secretary of Agriculture
InventorWilliam B. Roth
Life of this patent
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Abstract
A novel means for the sustained release of agricultural chemicals is provided by a methanol treated activated sludge carrier. The viscous polymeric carrier has application in forming sprayable films, granular pellets, and seed coatings which are resistant to natural mechanisms of chemical loss.
Claims17
An agricultural composition comprising:
- a. an agricultural chemical selected from the group consisting of pesticides, fertilizers, insect attractants, and insect repellants, wherein said chemical is present in an amount ranging from about 0.001% to about 50% by weight of said composition;
- b. methanol treated activated sludge (MAS) solids in an amount of from about 0.006% to about 2.5% by weight of said composition;
- and
- c. a solvent.
A process for producing an agricultural composition comprising the following steps:
- a. providing an agricultural chemical selected from the group consisting of pesticides, fertilizers, insect attractants, and insect repellants in an amount ranging from about 0.001% to about 50% by weight of said composition;
- and
- b. admixing said agricultural chemical with methanol treated activated sludge (MAS) having a viscosity in the approximate range of 2,000-14,000 cps. and a solids content in the range of 0.1-2.5% by weight, wherein said MAS solids are present in said composition in an amount ranging from about 0.006% to about 2.5% by weight.
A process for applying an agricultural chemical selected from the group consisting of pesticides, fertilizers, insect attractants, and insect repellants to a substrate comprising the following steps:
- a. providing an agricultural composition comprising:
- 1. said agricultural chemical in an amount ranging from about 0.001% to about 50% by weight of said composition;
- 2. methanol treated activated sludge solids in an amount of from about 0.006% to about 2.5% by weight of said composition;
- and
- 3. a solvent;
- and
- b. applying said composition to said substrate to form a continuous film.
Dependencies are inferred from the claim text.