Vaporized administration of pesticides

Patent metadata

Field	Value
Publication number	US-10021881-B2
Application number	US-201715452501-A
Country	US
Kind code	B2
Filing date	Mar 7, 2017
Priority date	Mar 7, 2016
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

The present disclosure relates to methods for administering vaporized pyrimethanil as an antimicrobial to inhibit pathogens of agricultural crops.

First claim

What is claimed is:

1. A method of treating plants or plant parts with an antimicrobial treatment comprising:
a) preparing the antimicrobial treatment comprising an antimicrobial compound, wherein the antimicrobial compound is pyrimethanil or an analog or derivative thereof,
b) vaporizing the pyrimethanil or an analog or derivative thereof to form a vapor by sublimation,
wherein the sublimation of the pyrimethanil or the analog or derivative thereof occurs via a direct phase transition from the solid phase to the gas phase and skips the intermediate liquid phase,
c) cooling the vapor to form solid microparticles, and
d) administering the solid microparticles of pyrimethanil or the analog or derivative thereof to one or more plants or plant parts in a chamber.

2. The method of claim 1 , wherein the one or more plants or plant parts is selected from the group consisting of a strawberry, a grape, an apple, an orange, and a blueberry.

3. The method of claim 1 , wherein the solid microparticles have a size of 2 micron or less.

4. The method of claim 1 , wherein the solid pyrimethanil or the analog or derivative thereof is in the form of a powder.

5. The method of claim 1 , wherein the pyrimethanil or analog or the derivative thereof comprises the following structure:

6. The method of claim 1 , wherein 100% of the pyrimethanil or the analog or derivative thereof is sublimated to produce the vapor.

7. The method of claim 1 , wherein no thermal degradation of the pyrimethanil or the analog or derivative thereof occurs at a temperature ranging from about 300° C. to about 350° C.

8. The method of claim 1 , wherein the pyrimethanil or the analog or derivative thereof is administered at a rate of about 0.001 mg/L to about 5 mg/L.

9. The method of claim 1 , wherein the pyrimethanil or the analog or derivative thereof further comprises a component selected from the group consisting of a carrier, a preservative gas, a compound, and a chemical.

10. The method of claim 9 , wherein the preservative gas is CO 2 or SO 2 .

11. The method of claim 1 , wherein the method is effective in inhibiting plant pathogens selected from the group consisting of Acremonium spp., Albugo spp., Alternaria spp., Ascochyta spp., Aspergillus spp., Botryodiplodia spp., Botryospheria spp., Botrytis spp., Byssochlamys spp., Candida spp., Cephalosporium spp., Ceratocystis spp., Cercospora spp., Chalara spp., Cladosporium spp., Colletotrichum spp., Cryptosporiopsis spp., Cylindrocarpon spp., Debaryomyces spp., Diaporthe spp., Didymella spp., Diplodia spp., Dothiorella spp., Elsinoe spp., Fusarium spp., Geotrichum spp., Gloeosporium spp., Glomerella spp., Helminthosporium spp., Khuskia spp., Lasiodiplodia spp., Macrophoma spp., Macrophomina spp., Microdochium spp., Monilinia spp., Monilochaethes spp., Mucor spp., Mycocentrospora spp., Mycosphaerella spp., Nectria spp., Neofabraea spp., Nigrospora spp., Penicillium spp., Peronophythora spp., Peronospora spp., Pestalotiopsis spp., Pezicula spp., Phacidiopycnis spp., Phoma spp., Phomopsis spp., Phyllosticta spp., Phytophthora spp., Polyscytalum spp., Pseudocercospora spp., Pyricularia spp., Pythium spp., Rhizoctonia spp., Rhizopus spp., Sclerotium spp., Sclerotinia spp., Septoria spp., Sphaceloma spp., Sphaeropsis spp., Stemphyllium spp., Stilbella spp., Thielaviopsis spp., Thyronectria spp., Trachysphaera spp., Uromyces spp., Ustilago spp., Venturia spp., Verticillium spp., Bacillus spp., Campylobacter spp., Clavibacter spp., Clostridium spp., Erwinia spp., Escherichia spp., Lactobacillus spp., Leuconostoc spp., Listeria spp., Pantoea spp., Pectobacterium spp., Pseudomonas spp., Ralstonia spp., Salmonella spp., Shigella spp., Staphylococcus spp., Vibrio spp., Xanthomonas spp., and Yersinia spp.

12. The method of claim 1 , wherein the method is effective in inhibiting plant pathogens selected from the group consisting of Botrytis cinerea, Mucor piriformis, Fusarium sambucinum, Aspergillus brasiliensis , and Peniciliium expansum.

13. The method of claim 1 , wherein the chamber is sealed.

14. The method of claim 1 , wherein no molecular changes to the pyrimethanil or the analog or derivative thereof is observed during sublimation.

15. The method of claim 1 , wherein the method further comprises circulating the solid microparticles of pyrimethanil or the analog or derivative thereof using a source of air flow.

16. The method of claim 15 , wherein the source of air flow is one or more fans.

Assignees

• Agrofresh Inc

Inventors

• Jacobson Richard M
• Maclean Daniel
• Malefyt Timothy
• Gachango Esther

Classifications

• A01N25/12

  Powders or granules (A01N25/26 takes precedence) · CPC title

• A01N43/54 Primary

  1,3-Diazines; Hydrogenated 1,3-diazines · CPC title

• A01N25/18

  Vapour or smoke emitting compositions with delayed or sustained release · CPC title

• A01N59/02

  Sulfur; Selenium; Tellurium; Compounds thereof · CPC title

• A01N59/04

  Carbon disulfide; Carbon monoxide; Carbon dioxide · CPC title