Pink bollworm control method

Patent metadata

Field	Value
Publication number	US-12336533-B2
Application number	US-202017785110-A
Country	US
Kind code	B2
Filing date	Dec 18, 2020
Priority date	Dec 20, 2019
Publication date	Jun 24, 2025
Grant date	Jun 24, 2025

Abstract

Provided is a pink bollworm control method that controls pink bollworms by using a mating disruption method to disturb the mating of the pink bollworms. The method including at least: a step in which cotton seedlings are planted in a field 21-41 days after the appearance of adult pink bollworms if said adult pink bollworms are a first generation, or 1-21 days after the appearance of adult pink bollworms if said adult pink bollworms are a second or later generation; and a step in which a controlled-released sexual pheromone formulation including at least Z,Z/Z,E-7,11-hexadecadienyl acetate, which is a pink bollworm sexual pheromone substance, is placed in the field 2-15 days before the predicted adult appearance date for the next generation of adults of said pink bollworms, as derived from effective accumulated temperature, and the sexual pheromone substance in the controlled-release sexual pheromone formulation is released in the field.

First claim

The invention claimed is:

1. A method for controlling a pink bollworm 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 21 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, which is a sex pheromone substance of the pink bollworm, in the field during a period of from 2 days to 15 days before a predicted emergence date of the next-generation adult pink bollworm, the predicted emergence date being derived from accumulated degree dates, to release the Z,Z/Z,E-7,11-hexadecadienyl acetate into the field.

2. The method for controlling a pink bollworm according to claim 1 , wherein the emerging adult pink bollworm is of the second generation.

3. The method for controlling a pink bollworm according to claim 1 , wherein the emerging adult pink bollworm is of the third generation.

4. The method for controlling a pink bollworm 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.

Assignees

• Shinetsu Chemical Co

Inventors

• Ogawa Kinya
• Sato Kazuomi
• Ishizawa Nobuaki

Classifications

• A01N37/06

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

• A01N31/04

  Oxygen or sulfur attached to an aliphatic side-chain of a carbocyclic ring system · CPC title

• A01M1/02 Primary

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

• A01P19/00

  Pest attractants · CPC title

• A01N25/00 Primary

  Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application {, e.g. seed treatment or sequential application}; Substances for reducing the noxious effect of the active ingredients to organisms other than pests · CPC title