Fertilizers for supplying plants with micronutrients

Claim 2

A fertilizer composition for supplying plants with the micronutrient iron, comprising an effective amount of at least one prussiate of the general formula ##STR12## in which M represents an alkali metal ion, alkaline earth metal ion, heavy metal ion or ammonium ion or a proton, R 1 , r 2 , r 3 and R 4 , independently of one another, each represent hydrogen, alkyl, hydroxyalkyl, cycloalkyl, optionally substituted aryl or aralkyl or R 1 , together with R 2 , and/or R 3 , together with R 4 , represent an alkylene group, a bis-alkylene ether group or a bis-alkylene thioether group or, together with the adjacent nitrogen atom, form an unsaturated heterocyclic ring, or R 2 and R 4 each represent hydrogen, alkyl or hydroxyalkyl and at the same time R 1 and R 3 together represent an alkylene group, X represents an alkylene group, hydroxyalkylene group, cycloalkylene group, bis-alkylenecycloalkylene group, bis-alkylene ether group, tris-alkylene diether group, bis-alkylene thioether group or bis-alkyleneamino group, a represents 1 or 2 and b represents 1, 2, 3 or 4, or a hydrate of a prussiate of the formula (I), in admixture with a solid or liquefid gaseous diluent or carrier or in admixture with a liquid diluent or carrier containing a surface-active agent.

Claim 3

A composition according to claim 1 wherein in said prussiate of the formula (I) M represents sodium, potassium, magnesium, calcium, barium, ammonium or hydrogen; R 1 represents hydrogen, straight-chain or branched alkyl or hydroxyalkyl each with 1 to 6 carbon atoms, cyclopentyl, cyclohexyl, benzyl or phenyl which is optionally substituted by alkyl with 1 to 4 carbon atoms and/or halogen, and R 2 , R 3 and R 4 , which need not be identical, each represent hydrogen, straight-chain or branched alkyl with 1 to 6 carbon atoms, or phenyl which is optionally substituted by alkyl with 1 to 4 carbon atoms and/or halogen; or R 1 , together with R 2 , and/or R 3 together with R 4 , represent a straight-chain or branched alkylene group with 1 to 7 carbon atoms or a bis-alkylene ether or bis-alkylene thioether group each with 1 to 4 carbon atoms per alkylene grouping; or R 1 and R 2 and/or R 3 and R 4 represent, together with the adjacent nitrogen atom, a five-membered to seven-membered unsaturated heterocyclic ring in which up to 3 carbon atoms can be replaced by nitrogen; or R 1 and R 3 together represent a straight-chain or branched alkylene group with 1 to 3 carbon atoms; X represents an alkylene or hydroxyalkylene group with 1 to 15 carbon atoms, cyclohexylene, a bis-alkylenecyclohexylene group with 1 to 4 carbon atoms per alkylene grouping or a bis-alkylene ether, tris-alkylene diether, bis-alkylene thioether or bis-alkyleneamino group with 1 to 4 carbon atoms per alkylene group; a represents 1 or 2; and b represents 1, 2 or 3, or a hydrate thereof.

Claim 4

A composition according to claim 1 wherein said prussiate has the formula ##STR13##

Claim 5

A composition according to claim 1 wherein said prussiate has the formula Na.sub.2 H[Fe(CN).sub.5 NH.sub.2 (CH.sub.2).sub.3 N(C.sub.2 H.sub.5).sub.2 ] .

Claim 6

A composition according to claim 1 wherein said prussiate has the formula Na.sub.2 H[Fe(CN).sub.5 NH.sub.2 -CH.sub.2 -CH.sub.2 -CH.sub.2 -N(CH.sub.3).sub.2 ] .

Claim 7

A composition according to claim 1 wherein said prussiate has the formula Na.sub.2 H[Fe(CN).sub.5 NH.sub.2 -CH.sub.2 -CH.sub.2 -NH-CH.sub.3 ] .

Claim 8

A composition according to claim 1 wherein said prussiate has the formula ##STR14##

Claim 9

A composition according to claim 1 wherein said prussiate has the formula NA.sub.2 H[ Fe(CN).sub.5 NH.sub.2 (CH.sub.2).sub.4 -NH.sub.2 ] .

Claim 10

A composition according to claim 1 wherein said prussiate has the formula ##STR15##

Claim 11

A composition according to claim 1 wherein said prussiate has the formula ##STR16##

Claim 12

A composition according to claim 1 wherein said prussiate has the formula ##STR17##

Claim 13

A composition according to claim 1 wherein said prussiate has the formula Na.sub.2 H[Fe(CN).sub.5 NH.sub.2 -CH.sub.2 -CH.sub.2 -NH.sub.2 ] · 6 H.sub.2 O.

Claim 14

A composition according to claim 1 wherein said prussiate is present in an amount of 0.1 to 95% by weight.

Claim 15

A method of supplying plants with micronutrient iron which comprises applying to the plants, or to the substance in which it grows a prussiate of the formula of claim 1 or a hydrate thereof alone or in admixture with a diluent or carrier.

Claim 16

A method according to claim 14 wherein said prussiate or its hydrate is applied at a rate of from 0.1 to 100 kg/hectare.

Claim 17

A method according to claim 15 wherein said prussiate or its hydrate is applied at a rate of from 1 to 50 kg/hectare.

Claim 18

A method according to claim 14 wherein the plant is one suffering from an iron deficiency disease.

Claim 19

A method according to claim 14 wherein the plant is a grape or chrysanthemum plant.

Claim 20

A method according to claim 14 wherein the plant is one suffering from a deficiency of nutrient ions other than iron which ions are contained in the prussiate of the formula (I) or its hydrate.

Claim 21

A plant whenever supplied with the micronutrient content by the method of claim 14.

Claim 22

A prussiate of the formula ##STR18## in which M represents an alkali metal ion, alkaline earth metal ion, heavy metal ion or ammonium ion or a proton, c represents 1 or 2, d represents 1, 2, 3 or 4, R 1 , r 2 , r 3 and R 4 , independently of one another, each represent hydrogen, alkyl, hydroxyalkyl, cycloalkyl, optionally substituted aryl or aralkyl, or R 1 , together with R 2 , and/or R 3 together with R 4 , represent and alkylene, bis-alkylene ether or a bisalkylene thioether group or, together with the adjacent nitrogen atom, for an unsaturated heterocyclic ring, or R 2 and R 4 each represent hydrogen, alkyl or hydroxyalkyl and at the same time R 1 and R 3 together represent an alkylene group, and Y represents an alkylene group, hydroxyalkylene group, cycloalkylene group, bis-alkylenecycloalkylene group, bis-alkylene ether group, tris-alkylene diether group, bis-alkylene thioether group or bis-alkyleneamino group, except that Y does not represent a --CH 2 --CH 2 -- group when R 1 , R 2 , R 3 and R 4 each represent hydrogen and their hydrates.

Claim 23

A prussiate of the formula ##STR18## in which M represents an alkali metal ion, alkaline earth metal ion, heavy metal ion or ammonium ion or a proton, c represents 1 or 2, d represents 1, 2, 3 or 4, R 1 , r 2 , r 3 and R 4 , independently of one another, each represent hydrogen, alkyl, hydroxyalkyl, cycloalkyl, optionally substituted aryl or aralkyl, or R 1 , together with R 2 , and/or R 3 together with R 4 , represent and alkylene, bis-alkylene ether or a bisalkylene thioether group or, together with the adjacent nitrogen atom, for an unsaturated heterocyclic ring, or R 2 and R 4 each represent hydrogen, alkyl or hydroxyalkyl and at the same time R 1 and R 3 together represent an alkylene group, and Y represents an alkylene group, hydroxyalkylene group, cycloalkylene group, bis-alkylenecycloalkylene group, bis-alkylene ether group, tris-alkylene diether group, bis-alkylene thioether group or bis-alkyleneamino group, except that Y does not represent a --CH 2 --CH 2 -- group when R 1 , R 2 , R 3 and R 4 each represent hydrogen and their hydrates.

Claim 24

A prussiate according to claim 21 having the formula ##STR19##

Claim 25

A prussiate according to claim 21 having the formula Na.sub.2 H[Fe(CN).sub.5 NH.sub.2 (CH.sub.2).sub.3 N(C.sub.2 H.sub.5).sub.2 ].

Claim 26

A prussiate according to claim 21 having the formula Na.sub.2 H[Fe(CN).sub.5 NH.sub.2 -CH.sub.2 -CH.sub.2 -CH.sub.2 -N(CH.sub.3).sub.2 ].

Claim 27

A prussiate according to claim 21 having the formula Na.sub.2 H[Fe(CN).sub.5 NH.sub.2 (CH.sub.2).sub.3 NH-CH.sub.3 ].

Claim 28

A prussiate according to claim 21 having the formula Na.sub.2 H[Fe(CN).sub.5 NH.sub.2 -CH.sub.2 -CH.sub.2 -NH-CH.sub.3 ].

Claim 29

A prussiate according to claim 21 having the formula Na.sub.2 H[Fe(CN).sub.5 NH.sub.2 -CH.sub.2 -CH.sub.2 -NH-CH.sub.2 -CH.sub.2 -NH.sub.2 ].

Claim 30

A prussiate according to claim 21 having the formula ##STR20##

Claim 31

A prussiate according to claim 21 having the formula Na.sub.2 H[Fe(CN).sub.5 NH.sub.2 (CH.sub.2).sub.4 -NH.sub.2 ].

Claim 32

A prussiate according to claim 21 having the formula Na.sub.2 H[Fe(CN).sub.5 NH.sub.2 (CH.sub.2).sub.6 -NH.sub.2 ].

Claim 33

A prussiate according to claim 21 having the formula ##STR21##

Claim 34

A prussiate according to claim 21 having the formula ##STR22##

Claim 35

A prussiate according to claim 21 having the formula ##STR23##