Method for simultaneously preventing pink bollworm and American bollworm

Patent metadata

Field	Value
Publication number	US-12446579-B2
Application number	US-202017784974-A
Country	US
Kind code	B2
Filing date	Dec 18, 2020
Priority date	Dec 20, 2019
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

Method for simultaneously preventing pink bollworm and American bollworm, the method including at least: a step in which cotton seedlings are planted in a field 21-41 days after the date of occurrence of the adult stage of the pink bollworm in the case of the first generation, and 1-29 days after the date of occurrence of the adult stage in the case of second and subsequent generations; and a step in which an extended-release pheromone preparation including at least Z,Z/Z,E-7,11-hexadecadienyl acetate, which is a sexual pheromone substance for pink bollworm, and Z-11-hexadecenal, which is a sexual pheromone substance for American bollworm, is implanted in the field 2-15 days before the expected date of occurrence of the adult stage of the next generation of pink bollworm, the expected date derived from the effective integrated temperature, and the sexual pheromone substances in the extended-release pheromone preparation are released in the field.

First claim

The invention claimed is:

1. A method for simultaneously controlling a pink bollworm and a species selected from an American bollworm and its family, the method comprising steps of:
planting a cotton seedling in a field during a period of from 21 days to 41 days after an emergence date of the first-generation adult pink bollworm or during a period of from 1 day to 29 days after an emergence date of the second or later generation adult pink bollworm; and
installing a sustained release pheromone preparation comprising Z,Z/Z,E-7,11-hexadecadienyl acetate and Z-11-hexadecenal, which are sex pheromone substances of the pink bollworm and the species selected from an American bollworm and its family, respectively, in the field during a period of from 2 days to 15 days before a predicted emergence date of the next-generation adult pink bollworms, the predicted emergence date being derived from accumulated degree days, to release the Z,Z/Z,E-7,11-hexadecadienyl acetate and the Z-11-hexadecenal into the field.

2. The method for simultaneously controlling a pink bollworm and a species selected from an American bollworm and its family according to claim 1 , wherein the emerging adult pink bollworm is of the second generation.

3. The method for simultaneously controlling a pink bollworm and a species selected from an American bollworm and its family according to claim 1 , wherein the emerging adult pink bollworm is of the third generation.

4. The method for simultaneously controlling a pink bollworm and a species selected from an American bollworm and its family according to claim 1 , wherein an amount of the Z-11-hexadecenal is more than 0% by mass and not more than 60% by mass relative to an amount of the Z,Z/Z,E-7,11-hexadecadienyl acetate.

5. The method for simultaneously controlling a pink bollworm and a species selected from an American bollworm and its family according to claim 1 , wherein the sustained release pheromone preparation further comprises Z,Z/Z,E-7,11-hexadecadienol, and a mass ratio of the Z,Z/Z,E-7,11-hexadecadienyl acetate to the Z,Z/Z,E-7,11-hexadecadienol is from 99.5:0.5 to 95.0:5.0.

6. The method for simultaneously controlling a pink bollworm and a species selected from an American bollworm and its family according to claim 1 , wherein the sustained release pheromone preparation further comprises Z-11-hexadecenol and a mass ratio of the Z-11-hexadecenal to the Z-11-hexadecenol is from 99.0:1.0 to 92.0:8.0.

Assignees

• Shinetsu Chemical Co

Inventors

• Ogawa Kinya
• Sato Kazuomi
• Ishizawa Nobuaki

Classifications

• A01N35/02

  containing aliphatically bound aldehyde or keto groups, or thio analogues thereof; Derivatives thereof, e.g. acetals · CPC title

• A01N31/02

  Acyclic compounds · CPC title

• A01P19/00

  Pest attractants · CPC title

• A01M1/02

  with devices {or substances, e.g. food, pheronones} attracting the insects · CPC title

• A01N37/06 Primary

  Unsaturated carboxylic acids or thio analogues thereof; Derivatives thereof · CPC title