Use of alkoxypyrazoles as nitrification inhibitors

Patent metadata

Field	Value
Publication number	US-12484580-B2
Application number	US-202418737626-A
Country	US
Kind code	B2
Filing date	Jun 7, 2024
Priority date	Feb 28, 2018
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

The present invention relates to novel nitrification inhibitors of formula I, which are alkoxypyrazole compounds. Moreover, the invention relates to the use of compounds of formula I as nitrification inhibitors, i.e. for reducing nitrification, as well as agrochemical mixtures and compositions comprising the nitrification inhibitors of formula I.

First claim

The invention claimed is:

1 . A method for reducing nitrification, comprising treating a plant growing on soil or soil substituents and/or the locus or soil or soil substituents where the plant is growing or is intended to grow with at least one alkoxypyrazole compound of formula I

or a salt, stereoisomer, tautomer, or N-oxide thereof as a nitrification inhibitor,
wherein
R 1 is C 2 H 5 ;
R 2 is CH 3 ;
and wherein
n is 1.

2 . The method of claim 1 , wherein the plant and/or the locus or soil or soil substituents where the plant is growing or is intended to grow is additionally provided with a fertilizer.

3 . The method of claim 2 , wherein the application of said compound of formula I and of said fertilizer is carried out simultaneously or with a time lag.

4 . The method of claim 1 wherein said plant is an agricultural plant; a silvicultural plant; an ornamental plant; or a horticultural plant, each in its natural or in a genetically modified form.

5 . The method of claim 4 wherein the agricultural plant or the vegetable is selected from the group consisting of wheat, barley, oat, rye, soybean, corn, potatoes, oilseed rape, canola, sunflower, cotton, sugar cane, sugar beet, rice, spinach, lettuce, asparagus, and cabbages.

6 . The method of claim 1 , wherein the alkoxypyrazole compound of formula I is present in the form of a pyrazolium phosphate salt.

7 . The method of claim 1 , wherein OR 1 is present in the 3-or 5-position of the pyrazole ring.

8 . The method of claim 1 , wherein said compound of formula I is used in combination with a fertilizer.

9 . The method of claim 1 , wherein said reduction of nitrification occurs in or on a plant, in the root zone of a plant, in or on soil or soil substituents and/or at the locus where a plant is growing or is intended to grow.

10 . An agrochemical mixture comprising (i) at least one fertilizer; and (ii) at least one compound of formula I as defined in claim 1 .

11 . The agrochemical mixture of claim 10 , wherein said fertilizer is a solid or liquid ammonium-containing inorganic fertilizer, a solid or liquid organic fertilizer, worm castings, compost, seaweed, guano, or a urea-containing fertilizer.

12 . The agrochemical mixture of claim 11 wherein the fertilizer is selected from the group consisting of an NPK fertilizer, ammonium nitrate, calcium ammonium nitrate, ammonium sulfate nitrate, ammonium sulfate or ammonium phosphate, liquid manure, semi-liquid manure, biogas manure, stable manure and straw manure, worm castings, compost, seaweed or guano, urea, formaldehyde urea, anhydrous ammonium, urea ammonium nitrate (UAN) solution, urea sulphur, urea based NPK-fertilizers, and urea ammonium sulfate.

13 . A composition for use in reducing nitrification comprising at least one compound of formula I as defined in claim 1 and at least one carrier.

14 . A method for treating a fertilizer or a composition, comprising applying a nitrification inhibitor as defined in claim 1 to the fertilizer or composition.

Assignees

• Basf Se

Inventors

• Nesvadba Peter
• Cunningham Allan F
• Nave Barbara
• Wissemeier Alexander
• Hindalekar Shrirang
• Pothi Tejas

Classifications

• C07D231/20

  One oxygen atom attached in position 3 or 5 · CPC title

• C05C9/00

  Fertilisers containing urea or urea compounds · CPC title

• C05C3/00

  Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor · CPC title

• C05G3/90

  for affecting the nitrification of ammonium compounds or urea in the soil · CPC title

• C05G1/00

  Mixtures of fertilisers belonging individually to different subclasses of C05 · CPC title