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.

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.

Abstract: Provided is a mating disruption method capable of bringing a stable and effective mating disruption result. Specifically provided is a mating disruption method comprising a step of starting to apply a mating disruptant after mating and oviposition of imagoes of the first generation of an insect pest are substantially over and before imagoes of the second generation of the insect pest emerge, the mating disruptant targeting at least one kind of insect pest which contains one or more kinds of acetates as a natural sex pheromone.

Abstract: Provided is a sustained release preparation capable of uniformly releasing therefrom a volatile chemical for a long period of time even if the amount of a liquid chemical remaining in a tubular container of the sustained release preparation becomes small. Also provided is a container for sustained release preparation, the container being tubular and comprising two layers of outer and inner layers, the inner layer having a thickness of 0.12 to 1.2 mm and having a foamed structure permitting the soaking-up of a liquid chemical to a height of at least 25 mm by capillarity. Also provided is a container unit for sustained release preparation, the unit comprising two or more of the container combined.

Abstract: Provided are a sustained releaser of sex pheromone substances and a method for controlling insect pest by using the releaser, each enabling to control the simultaneous release of a mixture of sex pheromone substances having different chemical structures of one insect pest or a mixture of sex pheromone substances of insect pests, and each enabling to release the sex pheromone substances at a fixed rate or greater during the infestation period or periods of the respective insect pest or pests.

Abstract: Provided are a sustained release dispenser which can control the release of sex pheromone simultaneously toward two or more species of insect pests and can also release the sex pheromone in response to the generation period of insect pest and the pest control method toward two or more insect pests. Provided specifically is a sex pheromone sustained release dispenser comprising two or more sex pheromone substances, each substance being aliphatic derivative having 10 to 20 carbons, and first and second chambers wherein some or all of the sex pheromone substance having a smallest carbon number excluding a carbon number in a functional group is contained in a first polymer chamber and the remainder is contained in a second polymer chamber. Provided also is a pest control method for using the sex pheromone sustained release dispenser.

Abstract: Provided is a mating disruption method capable of bringing a stable and effective mating disruption result. Specifically provided is a mating disruption method comprising a step of starting to apply a mating disruptant after mating and oviposition of imagoes of the first generation of an insect pest are substantially over and before imagoes of the second generation of the insect pest emerge, the mating disruptant targeting at least one kind of insect pest which contains one or more kinds of acetates as a natural sex pheromone.

Abstract: Provided are a mating disruptant having an improved mating disruption effect against pest insects. Specifically, provided is a mating disruptant for the control of pest insects whose natural sex pheromone composition is substantially free of an alcohol and comprises one or more acetates, the disruptant comprising the one or more acetates and an alcohol or alcohols which can be derived from the one or more acetate, wherein an amount of each of the alcohol or alcohols is from 0.5 to 10% by weight relative to an amount of each deriving acetate; and a mating disruption method using the mating disruptant. The alcohol which can be derived from the acetate is an alcohol obtainable by hydrolysis of the acetate and means an alcohol component of the ester derived from an acid and the alcohol.

Abstract: Provided is a sustained release preparation capable of uniformly releasing therefrom a volatile chemical for a long period of time even if the amount of a liquid chemical remaining in a tubular container of the sustained release preparation becomes small. Also provided is a container for sustained release preparation, the container being tubular and comprising two layers of outer and inner layers, the inner layer having a thickness of 0.12 to 1.2 mm and having a foamed structure permitting the soaking-up of a liquid chemical to a height of at least 25 mm by capillarity. Also provided is a container unit for sustained release preparation, the unit comprising two or more of the container combined.

Abstract: Provided are a sustained releaser of sex pheromone substances and a method for controlling insect pest by using the releaser, each enabling to control the simultaneous release of a mixture of sex pheromone substances having different chemical structures of one insect pest or a mixture of sex pheromone substances of insect pests, and each enabling to release the sex pheromone substances at a fixed rate or greater during the infestation period or periods of the respective insect pest or pests.

Abstract: Provided are a microcapsule emulsion which can release almost all the amount of a biological active substance comprised therein at a constant release rate over a prolonged period, and a method for producing the same.

Abstract: Provided are a sustained release dispenser which can control the release of sex pheromone simultaneously toward two or more species of insect pests and can also release the sex pheromone in response to the generation period of insect pest and the pest control method toward two or more insect pests. Provided specifically is a sex pheromone sustained release dispenser comprising two or more sex pheromone substances, each substance being aliphatic derivative having 10 to 20 carbons, and first and second chambers wherein some or all of the sex pheromone substance having a smallest carbon number excluding a carbon number in a functional group is contained in a first polymer chamber and the remainder is contained in a second polymer chamber. Provided also is a pest control method for using the sex pheromone sustained release dispenser.

Abstract: When a communication disruptant containing (Z)-11-tetradecen-1-yl acetate as the only active ingredient is continually used for a period of 5 to 10 years, a phenomenon has been observed in which its communication-disrupting effect on insect pests, particularly of the family Tortricidae, living in the field or the like through successive generations is reduced. Accordingly, it is eagerly desired to develop a new communication disruptant which is also effective for such fields where the communication-disrupting effect (on insect pests, particularly of the family Tortricidae, living there through successive generations) has been reduced.

Abstract: A mating disruption method for the control of insect pests comprises releasing a sex pheromone in a field wherein an adsorption of the sex pheromone to a soil in the field is decreased.

Abstract: An aluminum alloy material for use in a terminal, which material contains a crystalline structure having 30% or more of a space factor of crystal grains having a crystal grain size of 30 &mgr;m or less. A terminal containing the aluminum alloy material.

Abstract: A method for controlling an injurious insect is herein disclosed, which comprises disturbing the copulative communication of an injurious insect to prevent proliferation of the insect by distributing a source of the sex pheromone thereof over a field to be controlled to make the sex pheromone release from the source distributed in the field, wherein a source of the sex pheromone having a high effective component-release rate per unit time is distributed over the central region of the field at a low density while a source of the sex pheromone having a low effective component-release rate per unit time is distributed over the peripheral region of the field at a high density. A sex pheromone-release agent having an effective component-release rate ranging from 0.

Abstract: Herein disclosed is a sustained release dispenser capable of uniformly releasing a volatile liquid ingredient over a long time period even when the amount of the liquid ingredient remaining in a container is reduced. According to an embodiment, the sustained release dispenser comprises a plastic container 4 having a liquid and volatile ingredient-permeable outer layer 1 and a liquid-absorbable inner layer 3 having the same material as those of the outer layer 1 and a liquid and volatile ingredient 2 enclosed in the plastic container. According to other embodiment, the sustained release dispenser comprises a plastic container 6 in which grooves 5 are formed on the inner wall and a volatile ingredient 2 accommodated in the container 6. According to other embodiment, the sustained release dispenser comprises a bag formed from a liquid permeable film 7 provided with a highly wettable film 8 on the inner surface thereof and a liquid sex pheromone 9 accommodated in the bag.

Abstract: A method of preventing and treating dry spots on the grass surface of a golf course comprising the sprinkling of a mixture of a nonionic surfactant and a water soluble polymer on the grass surface. The development of dry spots on the grass surface of a golf course can be prevented and also already developed dry spots can be treated and reduced by this method.

Abstract: Described is a process for easily preparing an .alpha.-bromo,.omega.-chloroalkane which is high in purity represented by the formula: Br(CH.sub.2).sub.n Cl in which n stands for an integer of 4 to 12. The process comprises reacting in an organic solvent an .alpha.,.omega.-dichloroalkane with an .alpha..omega.-dibromoalkane. As the organic solvent, an aprotic nitrogen-containing or sulfur-containing organic solvent having a dielectric constant at 20.degree. C. of 20 or larger, for example, N,N-dimethylformamide, N,N-dimethylacetamide or N,N-dimethylimidazolidinone is preferred.

Abstract: A method for improvement (treatment) and prevention of dry spots on the grass surface of a golf course comprising sprinkling of an acetylene alcohol derivative (s) or sprinkling of it along with a water soluble polymer water retentive agent on the grass surface. Also, a method for prevention of dry spots on the grass surface of a golf course comprising sprinkling of a water soluble polymer water retentive agent(s) on the grass surface.