KR20090009103A - Physical insecticidal composition against small-size insects on crops and exterminating method of small-size insects on crops - Google Patents
Physical insecticidal composition against small-size insects on crops and exterminating method of small-size insects on crops Download PDFInfo
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- KR20090009103A KR20090009103A KR1020080056804A KR20080056804A KR20090009103A KR 20090009103 A KR20090009103 A KR 20090009103A KR 1020080056804 A KR1020080056804 A KR 1020080056804A KR 20080056804 A KR20080056804 A KR 20080056804A KR 20090009103 A KR20090009103 A KR 20090009103A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—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
- A01N25/08—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 containing solids as carriers or diluents
- A01N25/10—Macromolecular compounds
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—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
- A01N25/24—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 containing ingredients to enhance the sticking of the active ingredients
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
- A01N33/02—Amines; Quaternary ammonium compounds
- A01N33/12—Quaternary ammonium compounds
Abstract
The present invention is water; And a physical micropest insecticide which is dissolved in water and includes a water-soluble polymer that is precipitated onto a film as the water is vaporized, and a method of controlling micropests using the same. Sprayed micropest insecticides slow water movement by adhering water-soluble polymers to the wings or legs of micropests parasitic in crops, and water-soluble polymers dissolved in water precipitate in the form of films as water in the pesticides vaporizes. Physical and further impede (飛上) or walking (결국), eventually leading to pesticides. Physical micropest insecticides according to the present invention can minimize the use of pesticides, thereby preventing harm to the human body, and do not inhibit the growth of crops. In addition, since water is used as a solvent, it is very economical, and water-soluble polymers attached to crops can be easily removed with water according to repeated use of micropest insecticides.
Description
The present invention relates to a micropest insecticide of crops and a method for controlling micropests of crops using the same.
Crops refer to plants that colonize and grow under human protection and management, and include ornamental crops such as flowers in addition to edible crops such as various vegetables. Crops are cultivated in facilities such as plastic houses to control their shipping time, as well as in open areas.In order to increase crop yield and improve quality, crops are used in the nervous system of micropests such as carbamate insecticides, organophosphorus insecticides and pyrethroid insecticides. The use of various pesticides leading to insecticidal action has been applied to control micropests of crops.
For example, Japanese Patent Application Laid-Open No. 1989-228903 discloses insecticides, fungicides, herbicides, etc., in which polymers such as vinyl acetate polymers and ethylene-vinylacetate copolymers having high adhesive properties are generally used so that pesticides may exhibit residual activity. The technique which emulsifies and mixes in the aqueous solution of is disclosed.
WO 2004/077947 also discloses a method for controlling the release of pesticides by preparing solid pesticides by coating solid pesticides such as insecticides, fungicides, herbicides with thermoplastic polymers.
The polymer applied to the above-described techniques only functions as an adhesive or coating agent of the pesticide, and is different from the physical pesticidal function of the present invention, and the pest of the micropest is made by the pesticide component. Therefore, the use of such pesticides adversely affect the human body and the environment, such as the control and consumer, and causes problems such as increased resistance of micropests to pesticides, major pests of potential pests, and increased control costs.
As interest in the side effects of such synthetic pesticides is increasing, consumers have recently avoided the consumption of edible fruits and vegetables, such as cucumbers, tomatoes, and peppers, in which pesticides may remain. Attempts have been made to use various pesticides of natural pesticides in order to solve these problems, but there are problems such as limited pesticide effects and excessive control costs.
SUMMARY OF THE INVENTION An object of the present invention is to provide a physical micropest insecticide and a method for controlling micropests using the same, which can exclude or minimize the use of pesticides leading to insecticide by acting on the nervous system of micropests present in crops.
Another object of the present invention is to provide an economical micropest insecticide and a micropest control method using the same without inhibiting the growth of crops.
It is still another object of the present invention to provide a micropest insecticide that can easily remove pesticide remaining in a crop with water and a method for controlling micropest using the same.
Physical micropest insecticides according to the present invention, water; And a water-soluble polymer which is dissolved in the water and precipitates onto the film as the water is vaporized.
The sprayed micropest insecticide is a viscous polymer solution, and adheres to the wings or legs of the micropest parasitic in the crop, thereby physically slowing the movement. In addition, as the water in the pesticide adhered to the micropest vaporizes, the water-soluble polymer dissolved in the water precipitates in the form of a film, so that the flying or walking of the micropest is not smooth and eventually leads to pesticides.
In the micropest insecticide of the crop according to the present invention, the content of the water-soluble polymer is precipitated in a film form as the water in the pesticide vaporizes so as to perform the function of preventing the micropest from flying or walking smoothly. Added, for example from 0.001 to 5.0% by weight, based on the total weight of the pesticide.
In addition, in the micropest insecticide of the crop according to the present invention, the water-soluble polymer is precipitated in a film form as the water in the pesticide vaporizes to perform the function of preventing the emergence or walking of the micropest smoothly. If the polymer is a natural polymer, a semi-synthetic polymer, synthetic polymers, etc. can all be used, it is preferable to include a monomer unit having a quaternary ammonium group or tertiary amino group to simultaneously exhibit the effect of controlling microorganisms such as mold and bacteria.
As described above, the micropest insecticide of the crop according to the present invention is a micropact of a crop such as mite, aleyrodiade, thrips, aphid, leaf miner, and mealybug. It can be used for pest control. These micropests cause great damage to horticulture and flower crops, especially to plants such as cucumbers, tomatoes, peppers and melons, and to field crops such as rose, gerbera, chrysanthemum, and poinsettia.
In addition, the micro pest control method according to the invention, (S1) is dissolved in water and the water, comprising the steps of preparing a physical micro pest pesticide comprising a water-soluble polymer that is deposited on the film as the water is vaporized; And (S2) spraying the physical micropest insecticide on crops in which the micropest is present.
First, the insecticidal action of the micropest insecticide according to the present invention is physically made by a water-soluble polymer having a film forming ability, unlike a conventional insecticide, so that the use of pesticides leading to insecticide by acting on the nervous system can be eliminated or minimized. Accordingly, it is possible to prevent the human body harm caused by pesticides, such as the accumulation of pesticides in the crop, operator's percutaneous, oral, inhalation exposure during pesticide injection.
Second, the micropest insecticide according to the present invention does not inhibit the growth of crops because it uses water as a solvent, it can be produced economically.
Third, the water-soluble polymer remaining in the crop after spraying the micropest insecticide according to the present invention is easily removed by washing with water. Therefore, it can be very usefully applied especially as a pesticide of raw food crops.
EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.
Physical micropest insecticides according to the present invention, water; And a water-soluble polymer which is dissolved in the water and precipitates onto the film as the water is vaporized.
The micropest insecticide is a viscous polymer solution, so when sprayed on the crop, it adheres to the wings or legs of the micropest parasitic on the crop, thereby slowing its movement. As the water in the pesticide adhered to the micropest evaporates, the water-soluble polymer dissolved in the water precipitates in the form of a film. As a result, the emergence or walking of the micropest is not smooth and eventually leads to insecticide.
In the micropest insecticide of the present invention, the water-soluble polymer refers to a polymer which may exist in a dissolved state in water before spraying the crop through any storage or spraying device. Therefore, polymers that can be dissolved in water at room temperature, as well as polymers that dissolve in water at high temperature and then dissolve in water at room temperature, are not well soluble in water, which is a solvent used, but may be dissolved in water in an appropriate amount of ethanol ( It includes all polymers that can be dissolved in water after dissolving the polymer in an intermediate solvent such as ethanol). Preferably, it is preferable to use a polymer that can be dissolved in water at room temperature.
In the micropest insecticide of the crop according to the present invention, the content of the water-soluble polymer is precipitated in a film form as the water in the pesticide vaporizes so as to perform the function of preventing the micropest from flying or walking smoothly. The addition is sufficient, and the content of the water-soluble polymer can be properly adjusted according to the size and resistance of the micropest. That is, for example, the size of the aphid (Aphid) about 2mm, the size of the thrips (Thrips) about 1.5mm, the size of the Aleyrodiade about 1.2mm, the size of the worm (Mealybug) About 3mm, the size of the mite is less than 1mm, leaf oyster is about 1.6mm. Therefore, small insects such as mites can be easily controlled by relatively low concentrations of water-soluble polymer solutions, and wing movements can be easily carried out by water-soluble polymers even in the case of flyable micropests such as powder, thrush, and leaf dens. The control can be slowed down.
In view of the foregoing, the suitable content of the water-soluble polymer is, for example, 0.001 to 5.0% by weight, more preferably 0.05 to 3.0% by weight, based on the total weight of the solution for pesticide. When the content of the water-soluble polymer is less than 0.001% by weight, the physical insecticidal effect of the micropest by film formation may be lowered. If the content is more than 5% by weight, the economic efficiency may be lowered as an agricultural pesticide and may cause the harmful effects of crops. Can be.
In addition, in the micropest insecticide according to the present invention, the water-soluble polymer is a polymer that precipitates in a film form as the water in the pesticide vaporizes to perform the function of preventing the emergence or walking of the micropest smoothly. Any ramen can be used. Therefore, various kinds of water-soluble polymers such as natural polymers, semisynthetic polymers, and synthetic polymers may be used.
Natural polymers include gelatin, pectin, dextran, hyaluronic acid or salts thereof, collagen, agar, gum arabic, residue rubber, acacia rubber, karaya rubber, toragan rubber, collapsing rubber, starch, cara Ginic acid, alginic acid, sodium alginate, etc. may be used, but is not limited thereto. In particular, natural water-soluble polymers may additionally play a role as a nutrient for crops depending on the type of insecticide action.
In addition, semi-synthetic polymers include methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, sodium carboxy methyl cellulose, soluble starch, dextrin ( Dextrine), carboxymethyl starch (Carboxy methyl starch), dialdehyde starch (Dialdehyde starch) and the like can be used, but is not limited thereto.
In addition, as the synthetic polymer, polyvinyl alcohol, polyvinyl pyrrolidone, polyvinyl methacrylate, poly acrylic acid or salt thereof, polyethylene oxide (Polyethylene oxide), Carboxy-containing acrylic resin, Carboxy-containing polyester resin, Water-soluble polyamide, Water-soluble polyurethane, Maltodextrin, Polydextrose General purpose synthetic polymers well known for their water solubility may be used, but are not limited thereto.
In particular, it is preferable to use a water-soluble polymer including a monomer unit having a quaternary ammonium group or a tertiary amino group as the synthetic polymer. Since the polymer containing a monomer unit having a quaternary ammonium group is known to exhibit bactericidal action against mold and bacteria, when spraying the insecticide of the present invention, which is used as a water-soluble polymer, to crops, the effect of controlling mold and bacteria is also enjoyed at the same time. can do.
As a water-soluble polymer including a monomer unit having a quaternary ammonium group or a tertiary amino group, it is preferable to use a polymer including a unit polymerized with a monomer having a quaternary ammonium group or a tertiary amino group represented by the following formulas (1) and (2), respectively. It's desirable. These polymers are easily solubilized in water and have a good film-forming ability, which is suitable for exhibiting physical control effects of micropests.
In Formulas 1 and 2, R 1 to R 3 are each independently hydrogen, a hydroxyl group, or an alkyl group having 1 to 3 carbon atoms, X is an alkylene group having 1 to 12 carbon atoms, -COOR 7- , -CONHR 7- , -OCOR 7 -or any one selected from the group consisting of R 8 -OCOR 7- , wherein R 7 and R 8 are each independently of each other alkylene having 1 to 5 carbon atoms, R 4 is an alkyl group having 1 to 3 carbon atoms, Hydroxyalkyl or R 1 R 2 C═C (R 3 ) —X—, R 5 is an alkyl group, hydroxyalkyl group or benzyl group having 1 to 3 carbon atoms, R 6 is a hydroxy group, carboxyl group, sulfonic acid group, or carbonic acid It is a C1-C10 alkyl group or benzyl group substituted by the ester group. Y − represents an anionic group when R 6 is an alkyl group, hydroxyalky or benzyl group. As an anion of Y − , a halogen ion, a sulfate ion, an alkyl sulfate ester ion having 1 to 3 carbon atoms, or an alkyl group having 1 to 3 carbon atoms is substituted. Aromatic sulfonic acid ion, hydroxy ion, etc. are mentioned. In addition, when R <6> contains a carboxyl group, a sulfonic acid group, or a sulfuric acid ester group, Y- does not exist and R <6> becomes an anion.
As the monomer of Formula 1, the alkyl (C1-5) -N, N, N-trialkyl (C1-C3) quaternary ammonium salt of Acryloyl or Methacryloyl , Oxyalkyl (C1-5) -N, N, N-trialkyl (C1-C3) quaternary ammonium salt of Acryloyl or Methacryloyl or N- (ω- Alkenyl (C3-10) -N, N, N-trialkyl (C1-3) quaternary ammonium salt is mentioned.
In the water-soluble polymer including a monomer unit having such a quaternary ammonium group or tertiary amino group, other monomers may be copolymerized in consideration of film forming ability, manufacturing cost, and the like.
1) Acrylic acid and salts thereof, methacrylic acid and salts thereof, maleic acid and salts thereof, maleic anhydride, styrene sulfonic acid salts, 2-acrylamide-2-methyl propane sulfonic acid salts, allyl sulfonic acid salts, vinyl sulfonic acid salts, sulfopropyl meta An anion group containing compound chosen from acrylate.
2) acrylic or methacrylic amide, N, N-dimethyl acrylamide or methacrylicamide, N, N-dimethyl propyl acrylic acid or methacrylic acid amide, N, N-dimethyl ethyl acrylic acid or methacrylic acid amide, N, N-dimethyl ethyl acrylic acid Or an amide containing compound selected from methacrylic acid amide, N-vinyl-2-caprolactam, N-vinyl-2 pyrrolidone.
3) Ester containing compounds from acrylic acid or alkyl methacrylate (C1-20), acrylic acid or 2-hydroxyethyl methacrylate, acrylic acid (or methacrylic acid) -N, N-dimethyl alkyl (C1-5), vinyl acetate .
4) ethylene, propylene, N-butylene, isobutylene, N-pentane, isoprene, 2-methyl-1-butene, N-hexene, 2-methyl-1-pentane, 3-methyl-1-pentane, 4 -Methyl-1-pentane, 2-ethyl-1-butene, styrene, vinyltoluene, α-methyl styrene, allylamine, N, N-diallyl amine, N, N-diallyl-N-alkyl amine, ethylene oxide , An olefin compound selected from propylene oxide, 2-vinyl pyridine and 4-vinylpyridine.
In addition, the micropest insecticide according to the present invention can enhance the insecticidal effect by additionally mixing a synthetic pesticide or preferably a natural pesticide, which acts on the nervous system and leads to pesticide, without affecting the object of the present invention. As a synthetic pesticide which can be used, the carbamite type, organophosphorus type, pyrethroid type, etc. which are generally used can be illustrated. In addition, natural pesticides such as Basil (Basil), Bay (Bay), Bergamot, Bitter orange, Black pepper, Cade, Cardamone that exhibits insecticidal properties , Caraway, Cedarwood, Chamomile, Chamonile, Cinnamon, Citronella, Clary sage, Clove bud, Clove leaf ), Coriander, Cypress, Eucalyptus, Fir needle, Fennel, Ginger, Geranium, Grapefruits, Lavender, Lemongrass, Lime, Majoram, Neem, Palmarosa, Petcholi, Pennyroyal, Peppermint, Pettigrain, Rosemary (Rosemary), Sage, Sandalwood, Spearmint, Tagets, Tea tree, Time Red Oil components such as yme red, thyme white and ylangylang may be used, but are not limited thereto.
In addition, the micro-pest insecticide of the present invention may further be added to the components that can be a nutrient source of the crop, components having a bactericidal action to the fungi or bacteria that may occur in the crop, without impairing the object of the present invention Of course.
The above-mentioned physical micropest insecticides can control micropests by spraying on crops in which micropests exist using a conventionally used pesticide sprayer. The water-soluble polymer remaining in the crop can be removed primarily by rain, but in the case of edible crops, the water-soluble polymer can be completely removed by washing the crop with water before eating.
Hereinafter, the present invention will be described in detail with reference to Examples. However, embodiments according to the present invention can be modified in many different forms, the scope of the invention should not be construed as limited to the embodiments described below. Embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art.
Examples 1 to 3
According to the composition shown in Table 1 was prepared a physical micro pesticide insecticide in which a water-soluble polymer is dissolved.
Comparative Example 1
According to the composition described in Table 1, a physical micropest insecticide was prepared in which the PVA polymer was dissolved in ethanol.
Comparative Example 2
According to the composition shown in Table 1, a physical micropest insecticide was prepared in which the MEB / MA polymer was dissolved in ethanol.
1) PVA: Polyvinylalchol
2) METAC: 2-[(methacryloyloxy) ethyl] trimethyl ammonium chloride
3) PVP: Polyvinylpirrolidone
4) MEB / MA: Methacryloylethyl betaine / methacrylate copolymer
Smiling pest Insecticidal evaluation
Using the liquid according to the above Examples and Comparative Examples was evaluated for the physical pesticides against micro pests as follows.
As a pest, it is a micro pest that causes serious damage to real greenhouse crops, and Mite is used as a walking pest, and Aleyrodiade and Thrips are used as emergency pests. Species are as follows. As the mites, Tetranychus urticae adults and Bemisia tabaci Q-type adults were used, and these two species are labile breeding in the laboratory. And the caterpillar is a Frankliniella from the rose in the greenhouse. occidentalis ) Adults were collected and used.
In the case of fly insects, powdery and whiskers, 10 birds were transferred to a cylinder chamber 10 mm in diameter by 180 mm in height using a brush. The bottom of the cylinder chamber was covered with a Petri dish lid, and the inlet was banded with a mosquito net to allow pesticide injection while preventing flight escape. Insecticides were sprayed five times to the test insects at a distance of about 10 cm from the inlet of the cylinder chamber by applying a pump spray containing each insecticide, in accordance with the spray spraying method most commonly used for pest control in farms. .
Spotted mites were placed on a 10cm Petri dish with a 90mm filter paper and 10 pieces were transferred using a brush. In the same way, the pump spray was sprayed 5 times at a distance of 20cm so that the carcasses of the test insects were evenly spread on the pesticide solution. It was. After spraying the pesticide solution after treatment, the insecticidal rate of each specimen was cumulatively examined after 10 minutes, 1 hour, 3 hours, and 6 hours, respectively, and all experiments were performed three times.
The pesticidal rate of the micro pests over time is shown in Table 2 below.
Referring to Table 2, the micropest insecticidal effect appeared very rapidly in the Bemisia tabaci , and the flowers of yellow- leaf beetle ( Frankliniella) In the case of occidentalis and Tetranychus urticae , the effect was not high at the initial 10 min, but the insecticide rate increased with time.
In particular, the physical pesticides of Comparative Example 1 and Comparative Example 2 using ethanol as a solvent exhibited higher insecticidal properties than the physical pesticides of the examples due to the rapid volatilization effect of ethanol itself. However, in determining the usefulness of the physical pesticide of the comparative example using the ethanol solvent, the economic impact as well as the following effects on the crop should be considered.
Evaluation of the Effect of Physical Insecticides on Crops According to Solvent Types
The stress (such as leaf curling or necrosis) that crops receive when applying the physical insecticides of Examples and Comparative Examples was examined. The physical insecticides of the Examples and Comparative Examples were directly sprayed on cucumbers, peppers, and tomatoes, which are added to general micro pests, and then the stresses of the crops were examined over time.
Seeds are sown, seedlings grown about 10 cm in pots, planted for 1 week, and pumped each physical insecticide according to Examples 1 and 3 and Comparative Examples 1 and 2 to each crop grown about 20 cm. Spray was applied evenly to the leaves and stems of the crop. The treated cucumber, pepper, and tomato pots were transferred to a greenhouse of 25 ± 5 ° C. with a light shielding film, and the watering was directly irrigated in a pot so that water did not touch the leaf surface. The effects on the crops over the course of 8 days were investigated using the following criteria.
<Crop investigation standard>
0: Weakness is not recognized visually
1: very mild, slightly recognized by small spots or leaf curls
2: Less than 20% of the treated leaves are recognized as harmful, but do not affect growth
3: Harm is recognized in 20-50% of the treated leaves
4: 50% or more of the treated leaves are damaged and greatly affect growth
5: severely weakened and unable to grow
Referring to Table 3, it was shown that according to Examples 1 and 3, insecticides using water as a solvent do not stress the crops at all. The same result was obtained when the insecticides having increased the water-soluble polymer content of Example 1 and Example 3 to 2% were applied.
On the other hand, according to the comparative examples, in the case of pesticides using ethanol, necrosis occurred severely in the laminar tissue between the leaf veins, and the necrotic tissue in which necrosis occurred was not restored to its original state. In particular, in the cucumbers, tomatoes, peppers applied in the experiment, cucumbers and tomatoes with broad leaves showed more damage to the ethanol solvent than peppers (see FIGS. 1 and 2).
Assessment of the effects on crops by repeated application of physical pesticides
When applied to crops, insecticides show high rates of control against adult insects at the time of spraying, but eggs (egg) are less affected by physical insecticides, so hatching to larvae after a few days. Will cause problems again. Therefore, in order to effectively control the micro pests, as in general insecticides need to be repeatedly sprayed at regular intervals physical pesticides, it is necessary to confirm the cumulative stress of the crops by repeated spraying.
In the case of facility cultivation such as a greenhouse, the physical insecticides of Example 3 and Comparative Example 1 and Comparative Example 2 were sprayed onto the crops in consideration of periodic watering, and then a day after the solvent was sufficiently volatilized. Water was continually irrigated onto the foliar in a spiracle fashion. In this manner, after spraying four insecticides at five-day intervals, the degree of damage to cucumbers, tomatoes, and peppers was determined based on the above-mentioned blemish scale.
Referring to Table 4, it was confirmed that the water-soluble polymer film attached to the crop by irrigation water did not give stress to the crop when the physical insecticide of Example 3 using water as the solvent was washed away.
On the other hand, when applying the physical insecticide of Comparative Example 1 using ethanol as a solvent, the crop is subjected to significant stress by ethanol, but the stress caused by the water-soluble polymer itself as the PVA film, a water-soluble polymer attached to the crop by watering, is washed away. Was not observed. On the other hand, crops using ethanol as a solvent and applying the physical insecticide of Comparative Example 2 in which the MEB / MA copolymer, which is a non-aqueous polymer, were dissolved, were weakened by necrosis (necrosis), and the MEB / MA copolymer was a leaf of the crop. The cumulative effects on the growth of crops significantly influenced the growth of crops, and cucumbers and tomatoes showed death.
1 is a photograph of a weakening phenomenon of tomato leaves according to the application of a physical insecticide of Comparative Example 1.
Figure 2 is a photograph of the weakening phenomenon of cucumber leaves according to the application of a physical insecticide of Comparative Example 1.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/KR2008/004153 WO2009011537A2 (en) | 2007-07-19 | 2008-07-15 | Physical control agents and control method from water-soluble polymer against small-size insect pests |
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| KR1020070072090 | 2007-07-19 | ||
| KR20070072090 | 2007-07-19 |
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| KR20090009103A true KR20090009103A (en) | 2009-01-22 |
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| KR1020080056804A KR20090009103A (en) | 2007-07-19 | 2008-06-17 | Physical insecticidal composition against small-size insects on crops and exterminating method of small-size insects on crops |
| KR1020080068398A KR20090009115A (en) | 2007-07-19 | 2008-07-15 | Physical control agents and control method from water-soluble polymer against small-size insect pests |
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