JPH0499416A - Pollen scattering inhibitor - Google Patents

Abstract

PURPOSE:To obtain the subject inhibitor, excellent in permeability and capable of suppressing scattering of pollens by spraying thereof on plants in the flowering period by adding an anionic surfactant, etc., to a film-forming agent, etc., as principal agents. CONSTITUTION:The objective inhibitor is obtained by adding preferably 0.1-10.0wt.% anionic surfactant (e.g. a sodium alkylbenzenesulfonate) and/or a nonionic surfactant (e.g. polyoxyethylene lauryl ether) to a film-forming agent (e.g. vinyl acetate polymer or a vinyl acetate-acrylic acid ester copolymer) and/or a tacky agent (e.g. a resin acid ester or molasses) as principal agents.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a pollen scattering preventive agent, and particularly to a pollen scattering preventive agent with excellent permeability.

[Conventional technology]

Allergic diseases caused by pollen are called hay fever, and the plants that cause it include cedar, cypress, Spanish mackerel, birch, alder, zelkova, quercus, japonica, japonica, japonica, haruga, sparrow gnome, butafusa, More than 40 species are known, including mugwort.

In order to prevent the scattering of pollen from these plants (and thus to prevent hay fever), attempts have been made to spray pollen scattering preventive agents containing film-forming agents and/or adhesives on flowers during the flowering stage. There is.

As a film forming agent, vinyl acetate polymer, vinyl acetate
Acrylic ester copolymer, ethylene-vinyl acetate-
Polymer emulsions such as acrylic ester copolymers are used, and adhesives include resin acid esters, molasses, xanthan gum, and carboxymethyl cellulose.These film-forming agents and adhesives can be used alone or in combination. The above can be used in combination.

For example, a pollen scattering prevention agent based on a vinyl acetate polymer includes an emulsion formulation containing 50% by weight of vinyl acetate polymer and 50% by weight of water. Pollen anti-scattering agents containing polymeric substances such as xanthan gum and carboxymethylcellulose sodium salt as main ingredients include 0.1 to 2.0% by weight aqueous solutions of these substances.

When using these pollen scattering preventive agents, the undiluted solution is diluted about 100 times and sprayed depending on the type and concentration of the film forming agent and/or adhesive, the spraying method, and the plants to be sprayed.

[Problem to be solved by the invention]

However, when the above-mentioned conventional pollen scattering preventive agent is diluted with water and sprayed on target plants, it becomes a film-forming agent and/or
Alternatively, because the adhesive itself does not have permeability, the film forming agent and/or adhesive cannot reach the entire flower and pollen, and a sufficient effect of preventing pollen scattering cannot be obtained.

If you look at the structure of the male flower of a plant, for example, the male flower of a Japanese cedar tree, each male flower has a pollen-filled anther within several layers of outer skin called the endpiece, and this anther is connected to the center of the male flower by filaments. It is connected to the flower axis. The surface of the end piece is also covered with a wax layer. As the flowering period approaches, the ends of male flowers that enclose pollen-filled anthers gradually open, creating a gap. Once the pollen grains have fully matured, they break open one after the other, releasing the pollen particles and scattering them into the atmosphere from between the ends.

Even with this structure of male Japanese cedar flowers, in order to increase the effect of preventing pollen scattering, it is necessary to infiltrate the pollen scattering preventive agent into the gap between the end pieces of the male flower.

Therefore, the purpose of the present invention is that when a pollen scattering preventive agent is sprayed, the sprayed liquid reaches all of the flowers and pollen of the plant, and the film forming agent and adhesive that are its components increase the scattering prevention effect. be.

[Means to solve the problem]

The present invention resides in a pollen scattering preventive agent containing a film forming agent and/or an adhesive as a main ingredient, and an anionic surfactant and/or a nonionic surfactant added thereto.

Film forming agent and/or which can be used in the pollen scattering prevention agent of the present invention
Alternatively, as the adhesive, a conventionally used adhesive can be used.

The head forming agent that can be used in the present invention includes 1j! Hynyl acid polymer 1. Examples include vinyl acetate-acrylic ester copolymer, ethylene-vinyl acetate copolymer, ethylene-1 vinyl-acrylic ester copolymer, and paraffin. Adhesives that can be used in the present invention include resin acid esters, molasses, xanthan gum, and carboxymethyl cellulose. Each of these can be used alone or in a mixture of two or more.

These agents, head forming agents and/or adhesives are usually preferably used in the form of emulsions or aqueous solutions.

The vinyl acetate polymer that can be used in the present invention usually has a molecular weight of about 5
000-100,000 vinyl acetate polymer about 40-6
It is preferably used in the form of an emulsion containing 1% of 0 weight ff, such as, for example, vDC (trade name Mobiny).
(Contains solid content 56wtff1%), Movinyl DCO2 (
Solid content: 60% by weight, solids content: 60% by weight (both manufactured by Hoechst fA).

The ethylene-vinyl acetate copolymer that can be used in the present invention is usually a copolymer with a composition ratio of ethylene to vinyl acetate of 1:9 to 2:8 and a molecular weight of about 10,000 to 100,000.
It is preferable to use it in the form of an emulsion containing 60% heavy metal, and these include, for example, the product names RY-365 (containing 55% solids by weight) and RY-391 (containing 50% solids by weight) (both (manufactured by Matsumoto Yushi Co., Ltd.).

Ethylene can also be used in the present invention. iEM vinyl
The acrylic ester copolymer is an emulsion containing about 40 to 60% by weight of a polymer having a molecular weight of about 10,000 to 1,000,000 and a composition ratio of ethylene to vinyl acetate to acrylic ester of 1:8:X to 1:2, etc. It is preferable to use it in the form of, for example, the product name RY-36.
3 (solid content 50 weight, L 4%, butyl acrylate used),
RY-392 (solid content 5o weight th1'/., Aku IJ
), RY-393 (solid content 60ii%)
(using butyl acrylate) (manufactured by Matsumoto Yushi Co., Ltd.).

Further, the paraffin that can be used in the present invention has a paraffin point of 50 to 60.
℃ paraffin, paraffin as solid content 20-4
Preferably, it is used as a paraffin emulsion containing 0% by weight.

Furthermore, the resin acid ester that can be used in the present invention is a water-dispersible 5
Molasses preferably contains about 80 to 85% by weight of solids, and xanthan gum has molecules of 12x10° to 5x10" and a 1% by weight aqueous solution has a viscosity of 500 to 1200 centiboise. Preferred examples include the product name Gluzan (manufactured by Sansho Co., Ltd.).

Further, it is preferable to use carboxymethylcellulose in the form of a sodium salt in an aqueous solution of 0.1 to 2.0% by weight.

The emulsion or aqueous solution of the film forming agent and/or adhesive used in the present invention may be sprayed as the above-mentioned undiluted solution, but it is usually diluted to a solid content of 0.1 to 20% by weight. It is preferable to spray it by spraying. However, the present invention is not limited to this range, and it is clear that the concentration used can be varied depending on the physical and chemical properties of the film-forming agent or adhesive.

According to the present invention, one or more types of l=m ionic surfactants and/or nonionic surfactants are added to the pollen scattering preventive agent. It is preferable to add these surfactants to the pollen scattering preventive agent in advance, but if a penetrant is not added to the pollen scattering preventive agent, the pollen scattering preventive agent is added to the predetermined concentration with water before spraying. The surfactant may be added to the diluted solution.

The anionic surfactants that can be used in the present invention include paraffins, α-olefins, higher alcohols, fatty acids, fatty acid esters, fats and oils, and alkylbenzenes as raw materials for hydrophobic groups, fatty acid salts, sulfate ester salts, and the like as hydrophilic groups. There are well known surfactants consisting of combinations of sulfonates, phosphate ester salts and dithiophosphate ester salts. These include, for example, sulfonic acid salts such as sodium alkylbenzene sulfonate (for example, 4-operex, manufactured by Kao Corporation, in which the alkyl group is dodecyl), dialkyl sulfosaccharide, 4-benzenesulfonate (where the alkyl group is 2-ethylhexyl), The product name is Near Roll CT-1 (manufactured by Toho Kagaku Kogyo Co., Ltd.).

In addition, the nonionic surfactants used in the present invention include higher alcohols, alkylphenols, fatty acids, fats and oils, and sorbitan fatty acid esters as raw materials for hydrophobic groups,
There are well-known surfactants consisting of ethylene oxide in combination with polyethylene glycol and polyhydric alcohols as raw materials for hydrophilic groups. These include, for example, polyoxyethylene alkyl ether (the alkyl group is lauryl and the degree of oxyethylene polymerization is 5, trade name Hymar L-5, manufactured by Matsumoto Yushi Co., Ltd.), polyoxyethylene alkyl phenyl ether (the alkyl group is lauryl, and the degree of oxyethylene polymerization is 5, manufactured by Matsumoto Yushi Co., Ltd.); , trade name 221 Kalgen D-'408, manufactured by Sakuji Yushi Co., Ltd., which has an oxyethylene polymerization degree of 8.

Two or more of the above-mentioned surfactants may be used in combination.

The surfactant used in the present invention is preferably varied depending on the type of film-forming agent and/or adhesive used, the plants to be sprayed, and the spraying concentration.

When the above surfactant is added to the pollen scattering prevention agent 01
It is preferable to add it in an amount of 10.0% by weight. Furthermore, when a pollen scattering prevention agent without surfactant added is made into a spray liquid, the concentration added to the spray liquid is 0.01 to 10% by weight.
It is preferable to do so. However, the present invention is not limited to this range, and may vary depending on the type of surfactant and its physical and chemical properties, as well as the type of film forming agent and/or adhesive used. Obviously, things can change.

When spraying the pollen scattering preventive agent of the present invention, the pollen scattering preventive agent to which the surfactant has been added may be used as a undiluted solution or diluted with water as described above using a sprayer, a power sprayer, or an aircraft such as a helicopter. It is effective to spray once to several times from early flowering to peak flowering.

[Effect]

By spraying the pollen scattering prevention agent containing a surfactant according to the present invention to flowers during the flowering stage, it increases penetration into the flowers, increases wetting of pollen, and forms a strong film over the entire flower. In addition, it is possible to make pollen stick together into clumps, make more pollen adhere to plants, and prevent pollen from scattering.

〔Example〕

The present invention will be explained below with reference to Examples.

Example 1 50 parts by weight of high-molecular vinyl acetate polymer Movinyl DC (containing solid content of 56% by weight) as a film forming agent, 2.5 parts by weight of an anionic surfactant (sodium dodecylbenzenesulfonate), and a nonionic interface. Activator (polyoxyethylene lauryl ether, n=5) 2.5 parts by weight, water 45
An emulsion was made containing parts by weight. As a control, an emulsion containing 50 parts by weight of Mobini vDc and 50 parts by weight of water was prepared. and multiply each by 25 (
solid content 112% by weight, surfactant 0.2% by weight), 50
times (solid content 0.56% by weight, surfactant 0.1% by weight)
and 100 times (solid content 0.28% by weight, surfactant 0.
05% by weight) with water, and each was sprayed on a potted Japanese black pine with flowers at the flowering stage using a hand-held handle sprayer to the extent that the spray solution dripped sufficiently.

After air-drying for a day and night, the pollen was knocked off by tapping the flowers on real colored paper indoors, and the fallen pollen was compared as the weight of fallen pollen per 10 male flowers. As a result, the weight of fallen pollen in the 25-fold diluted area to which a surfactant was added was 6 . On the other hand, the 25-fold diluted area to which no surfactant was added had 7LR9, the 50-fold diluted area had 11m9, and the 100-fold diluted area had 18In9. The weight of untreated fallen pollen was 24R9.

Thus, a clear difference in the weight of fallen pollen was observed between those with and without surfactant and those without any treatment. And those with surfactants added,
Aggregation and fixation (clumps of pollen) of pollen are observed in flowers.
The amount was found to be higher in sprayed plots with higher solid content and surfactant content.

Example 2 A spray solution was prepared by diluting polyoxyethylene resin acid ester (containing 70 Mffi% solids) with water as an adhesive, and an anionic surfactant (d-2-ethylhexyl sulfonate) was added to this. succinate) or nonionic surfactant (polyoxyethylene nonylphenyl ether@n=
8) or (poliomyelitis diethylene lauryl ether conflict n =
5) were added at a concentration of 0.1% by weight. Then, apply the spray liquid to which each has been added using a micro-volume sprayer (ULV).
A (manufactured by Micron 5prayers, UK) was used to spray water on cedar trees with flowers in the flowering stage at an IQml/- level.

After air-drying for about 3 hours, the pollen was first dusted off onto the marked watch glass and black paper, and the cedar pollen that had fallen within a certain area was counted. As a result, the area to which the anionic surfactant di-2-ethylhexyl sulfosuccinate was added had 12 particles per square mouth (1i), and the nonionic surfactant polyoxyethylene nonyl phenyl ether (n =
8) was added to 34 areas, and polyoxyethylene lauryl ether (n=5) was added to 23 areas. In contrast, in the area without surfactant, there were approximately 50 pieces.
In addition, the number was more than 100 in the non-sprayed area.

As described above, the amount of fallen pollen in the area where the surfactant was added was very small, and the pollen that fell on the watch glass and black paper was observed to be clumps of several or more pollen particles agglomerated together. Because these aggregates are more heavily stacked than single pollen grains, the distance that they are dispersed by the wind is extremely short.

Example 3 50 parts by weight of ethylene-vinyl acetate-acrylic acid ester copolymer emulsion RY-363 (containing 50% solid content) as a head-forming agent, and molasses (containing about 80% solid content) as an adhesive. 10 parts by weight, 5 fcll of di-2-ethylhexyl sulfosuccinate as an ionic surfactant, 5 parts by weight of polyoxyethylene nonylphenyl ether (n=8) as a nonionic surfactant, and 3 parts by weight of water.
20 parts by weight of each emulsion formulation containing 0 parts by weight.
times (solid content approximately 1.65% by weight, surfactant 0.5% by weight ff
i%), 40 times (solid content approx. 0.83 wt 1%, surfactant 0.25 wt%) and 80 times (solid content approx. 0.41 wt%, surfactant 0.125 wt ffi%) Diluted with water. Each diluted solution was sprayed onto a potted black pine with flowers in the flowering stage using a hand-held handle sprayer to the extent that the solution dripped sufficiently.

After air-drying for a day and night, the pollen was dusted off onto a watch glass with squares and black paper similar to those in Example 2, and the black pine pollen that had fallen in a certain area was counted. As a result, in the area where the 20 times diluted solution was sprayed, the amount of fall was less than 10% compared to the control area where water was sprayed, the amount was 20% in the 40 times diluted area, and about 50% in the 80 times area.

In addition, pollen particles that have fallen onto the black paper are also coated with the film-forming agent RY-
363 and aggregates believed to be caused by adhesive molasses were observed.

In addition, many flowers were observed to have agglomerated pollen attached due to penetration of the spray solution.

〔Effect of the invention〕

As mentioned above, when a pollen scattering preventive agent is sprayed on a flowering plant by adding a surfactant, its permeability allows more film-forming agent and/or adhesive to adhere, significantly reducing pollen scattering. can be suppressed to Additionally, the pollen particles coagulate due to the liquid that permeates the flowers, increasing their adhesion to the flowers, and hardly any pollen is scattered.

Patent applicant Eisuke Kobata

Claims (1)

[Claims] 1. A pollen scattering prevention agent containing a film forming agent and/or an adhesive as a main ingredient, and an anionic surfactant and/or a nonionic surfactant added thereto.