# US 10,766,828 B2 · Liquid fertilizer compositions comprising nickel, cobalt, and molybdenum, and methods of forming and using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,766,828 B2 - Document ID: US10766828B2 - Status: Granted - Kind: B2 - Application number: 15/611,508 - Filed: 2017-06-01 - Published: 2018-12-06 - Granted: 2020-09-08 - Earliest claimed: 2017-06-01 - Assignees: Compass Minerals América do Sul Indústria e Comércio S.A. - Applicants: Produquímica Indústria e Comércio S.A. - Inventors: Michel Castellani; Ithamar Prada - Web page: https://patentgrep.com/patent/US10766828B2 ## CPC - C05D 9/02: containing trace elements - C05G 5/23: Solutions - C05D: INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE - C05G: MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS (organic fertilisers containing added bacterial cultures, mycelia, or the like C05F11/08; organic fertilisers containing plant vitamins or hormones C05F11/10); FERTILISERS CHARACTERISED BY THEIR FORM ## Abstract Stable, liquid fertilizer compositions comprising nickel, cobalt, and molybdenum are provided herein. The fertilizer compositions are capable supplying high levels of micronutrients to seeds at low doses of the compositions. The compositions generally have low salinity and a pH from about 6.0 to about 8.0, thereby avoiding the high mortality rates of beneficial soil bacteria, which has been a major problem with prior seed fertilizers. Also provided herein are methods of forming and using the fertilizer compositions. Notably, it has been discovered that monoethanolamine molybdate solutions can be used to provide high levels of molybdenum to seed surfaces in a stable liquid formulation. ## Claims ### Claim 1 A liquid fertilizer composition comprising a source of nickel, a source of cobalt, and monoethanolamine molybdate, said liquid fertilizer composition having a solution pH of about 6.0 to 7.5. ### Claim 2 (depends on 1) The liquid fertilizer composition of claim 1, wherein said source of nickel is a chelated nickel compound. ### Claim 3 (depends on 2) The liquid fertilizer composition of claim 2, wherein said chelated nickel compound is an ethylenediaminetetraacetic acid nickel chelate compound. ### Claim 4 (depends on 1) The liquid fertilizer of claim 1, wherein said source of cobalt is a chelated cobalt compound. ### Claim 5 (depends on 4) The liquid fertilizer composition of claim 4, wherein said chelated cobalt compound is an ethylenediaminetetraacetic acid cobalt chelate compound. ### Claim 6 (depends on 1) The liquid fertilizer composition of claim 1, further comprising an organic acid. ### Claim 7 (depends on 6) The liquid fertilizer composition of claim 6, said fertilizer comprising from about 1% to about 10% by weight of said organic acid. ### Claim 8 (depends on 7) The liquid fertilizer composition of claim 7, wherein said organic acid is citric acid. ### Claim 9 (depends on 1) The liquid fertilizer composition of claim 1, said fertilizer comprising a nickel content of about 0.2% to about 2.0% by weight. ### Claim 10 (depends on 1) The liquid fertilizer composition of claim 1, said fertilizer comprising a cobalt content of about 0.1% to about 1.0% by weight. ### Claim 11 (depends on 1) The liquid fertilizer composition of claim 1, said fertilizer comprising a molybdenum content of about 1% to about 20% by weight. ### Claim 12 (depends on 1) The liquid fertilizer composition of claim 1, further comprising seaweed. ### Claim 13 (depends on 12) The liquid fertilizer composition of claim 12, said fertilizer comprising from about 10% to about 55% by weight of said seaweed. ### Claim 14 (depends on 1) The liquid fertilizer composition of claim 1, further comprising an amino acid. ### Claim 15 (depends on 14) The liquid fertilizer composition of claim 14, wherein said amino acid is tryptophan. ### Claim 16 (depends on 1) The liquid fertilizer composition of claim 1, wherein said fertilizer has an electrical conductivity between about 10 and about 100 mS·cm−1at 10% in water solution. ### Claim 17 (depends on 1) The liquid fertilizer composition of claim 1, said monoethanolamine molybdate being formed by adding monoethanolamine to molybdic acid in heated water. ### Claim 18 (depends on 1) The liquid fertilizer composition of claim 1, further comprising a nonionic surfactant. ### Claim 19 A liquid fertilizer composition comprising: a source of nickel; a source of cobalt; monoethanolamine molybdate; an organic acid; and from about 5% to about 55% by weight seaweed, based on the total weight of the liquid fertilizer composition taken as 100% by weight, said liquid fertilizer composition having a solution pH of about 6.0 to 7.5. ### Claim 20 (depends on 19) The liquid fertilizer composition of claim 19, said monoethanolamine molybdate being formed by adding monoethanolamine to molybdic acid in heated water. ### Claim 21 (depends on 19) The liquid fertilizer composition of claim 19, said seaweed being present at levels of from about 20% to about 45% by weight, based on the total weight of the liquid fertilizer composition taken as 100% by weight.