JPH09291002A - Controlling agent composition for insect pest of citrus fruits and controlling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject new agrochemical capable of controlling damages due to insect pests damaging new buds of plants, especially citrus fruits, etc. SOLUTION: This controlling agent composition for insect pests of citrus fruits comprises (A) 0.1-10wt.% systemic insecticide represented by formula I [R is H, formyl, etc.; A is H, a 1-4C alkyl or formula II (R<1> is H or a 1-4C alkyl) bonded to B; B is a 1-4C alkyl, a group represented by SR<2> (R<2> is a 1-4C alkyl) or formula III (R<3> and R<4> are each H, methyl, etc.), methyl group bonded to A or a group represented by formula IV (R<5> is H or a 1-4C alkyl); Y is N or CR<6> (R<6> is H or a 1-4C alkyl); X is nitro or cyano], e.g. N-cyano-N-(2- chloro-5-pyridylmethyl)-N'-methylacetamide and (B) a vinyl acetate-based polymer such as a vinyl acetate resin. The composition is applied to a pruned cut surface or injected into a grafting treated part of a plant.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a new chemical agent and a method for controlling a plant pest which damages agricultural and horticultural crops, especially cut surfaces of pesticides of citrus fruits and sprouts on the grafted portion.

[0002]

2. Description of the Related Art JP-A-4-1547471 and JP-A-61
The compounds described in JP-A-106854, JP-A-3-218370, JP-A-2-171, and the like act properly with extremely low doses compared to the conventional organic phosphorus-based and carbamate-based insecticides, and have permeability. Is a chloronicotinyl-based insecticidal compound having Further, as a known technique close to the present invention, a pasty agricultural chemical preparation described in JP-A-7-291802 is known, and a pasty agricultural chemical preparation obtained by adding an adjuvant to a chloronicotinyl insecticide is used on the plant surface or A technique of applying it to a cut surface portion of a plant surface is disclosed.
However, the adjuvants described in this publication are sorbitan monolaurate, polyoxyethylene sorbitan monolaurate, polyethylene glycol oleate, etc., and there is no description about the inclusion of vinyl acetate polymer. Further, as a fungicide composition for agricultural and horticultural use containing a vinyl acetate polymer, Topzin M paste agent manufactured by Nippon Soda Co., Ltd. is known.
No plant pest control composition containing a vinyl acetate polymer is known.

[0003]

Conventionally, citrus fruits such as mandarin orange, especially high sugar content varieties such as Qingdao Wenzhou and Otsu No. 4 are prone to large fruits and have the property of causing strong biennial results. During the young period, it was difficult to stably produce L- and M-class fruits with high commercial value. As a countermeasure for this, a method of securing good summer branches by summer pruning during the branch extension period (early August to late August) is used, but excessive loss of water from the pruning cut surface at that time. Although some of the branches may die due to infection with phytopathogenic bacteria and damage plants, no effective measures have been taken. Moreover, pests such as citrus leafminer, aphids, and leaf beetles frequently occur in the new shoots, which makes it difficult to secure healthy branches.

On the other hand, the propagation of excellent varieties and lines of perennial crops such as fruit trees is carried out by grafting. In addition, when farmers change existing varieties, it is common to replant a large number of spikes onto a mature tree (intermediate rootstock) to enable harvesting in a short period of time. In either case, the time of bud elongation overlaps with the time of occurrence of the pests as described above, and therefore pesticides are regularly sprayed to control the pests. However, in high contact renewal, buds with a large growth difference are mixed for a long period of time, so that the control effect is unstable and it is difficult to secure good branches. Therefore, as a method of controlling it, the insecticide is regularly sprayed 2-3 times during the extension period of the summer branches (early to late August), but it is also at high temperature in summer and the farmer is labor-intensive. Was a burden to An object of the present invention is to provide a pest control composition for tree pests, in particular, a pest control agent for damaging shoots such as citrus fruits, and a method for controlling plant pests using the composition, which solves the above problems.

[0005]

Means for Solving the Problems As a result of intensive studies by the present inventors, by applying a composition containing a penetrating insecticide and a vinyl acetate polymer to a cut surface produced during pruning of citrus fruits, Further, by injecting the composition into the grafted portion of plants such as citrus fruits, it was found that damage by pests etc. that harm the shoots can be controlled very effectively,
The present invention has been completed.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.
The present invention is a citrus pest control agent composition to be applied to a pruned cut surface of a citrus plant characterized by containing a vinyl acetate polymer such as a penetrating insecticide and a vinyl acetate adhesive or a vinyl acetate resin. The present invention relates to a composition for controlling plant pests such as citrus pests, which is injected into a plant or a grafted part of a plant, and a method for controlling plant pests using the composition.

The osmotic insecticide used in the present invention is not particularly limited as long as it has an osmotic migration property. In particular, the following formula [I]

[0008]

Embedded image

[In the formula, R represents a hydrogen atom, a formyl group, an acetyl group, a C _1-4 alkyl group, a 2-chloro-5-pyridylmethyl group or a 2-chloro-5-thiazolylmethyl group, and A is Hydrogen atom, linear or branched C _1-4 alkyl group such as methyl, ethyl, propyl, isopropyl, butyl, t-butyl group, ethylene group bonded to B, trimethylene group bonded to B or compound bonded to B 2,

[0010]

[Chemical 6]

Represents a group represented by (R ¹ is a hydrogen atom or methyl, ethyl, propyl, isopropyl, butyl,
It represents a linear or branched C _1-4 alkyl group such as t-butyl group. ). B is a C _1-4 alkyl group, SR ² (R ²
Represents a linear or branched C _1-4 alkyl group such as methyl, ethyl, propyl, isopropyl, butyl, t-butyl group. ), Chemical formula 3,

[0012]

Embedded image

(Wherein R ³ and R ⁴ represent a hydrogen atom, a methyl group or an ethyl group), —S— bonded to A, a methylene group bonded to A, or bonded to A. Conversion 4,

[0014]

Embedded image

(Wherein R ⁵ represents a hydrogen atom or a C _1-4 alkyl group such as a methyl or ethyl group). Y represents N or CR ⁶ (R ⁶ represents a hydrogen atom or a C _1-4 alkyl group), and X represents a nitro group or a cyano group. ] The use of a compound represented by

More preferably, the following compounds can be exemplified as the penetrating insecticide used in the present invention. (1) N-cyano-N- (2-chloro-5-pyridylmethyl) -N'-methylacetamidine (2) 1- [N- (6-chloro-3-pyridylmethyl)
-N-ethylamino] -1-methylamino-2-nitroethylene, (3) 1- (2-chloro-5-pyridylmethyl) -5-methyl-2-nitroimino-hexahydro-
1,3,5-triazine, (4) 1- (2-chloro-5
-Thiazolylmethyl) -3,5-dimethyl-2-nitroimino-hexahydro-1,3,5-triazine,
(5) 1- (2-chloro-5-pyridylmethyl) -3,
5-dimethyl-2-nitroimino-hexahydro-1,
3,5-triazine, (6) 1- (2-chloro-5-pyridylmethyl) -2-nitromethylene-imidazolidine, (7) 1- [N- (2-chloro-5-thiazolylmethyl) -N- Ethylamino] -1-methylamino-2-
Nitroethylene (8) 3- (2-chloro-5-pyridylmethyl) -2-
Nitromethylene-thiazolidine, (9) 1- (2-chloro-5-pyridylmethyl) -2- (1-nitro-2-allylthioethylidene) imidazolidine, (10) 1-
(2-chloro-5-pyridylmethyl) -2- (1-nitro-2-ethylthioethylidene) imidazolidine, (1
1) 1- (2-chloro-5-pyridylmethyl) -2-
(1-nitro-2-β-methylallylthioethylidene)
Imidazolidine (12) Methyl- [3- (2-chloro-5-pyridylmethyl) -1-methyl-2-nitro] guanidinoformate, (13) 1- (2-chloro-5-pyridylmethylamino)- 1-methylthio-2-nitroethylene, (1
4) 1- (2-chloro-5-pyridylmethylamino)-
1-methylamino-2-nitroethylene, (15) 1-
(2-chloro-5-pyridylmethyl) -3-nitro-2
-Methylisothiourea, (16) 1- (2-chloro-
5-pyridylmethyl) -1-methyl-2-nitroguanidine, (17) 1- (2-chloro-5-pyridylmethylamino) -1-dimethylamino-2-nitroethylene,
(18) 1- [N- (2-chloro-5-pyridylmethyl) -N-methylamino] -1-methylamino-2-nitroethylene, (19) 1- [N- (2-chloro-5-
Pyridylmethyl) -N-methylamino] -1-dimethylamino-2-nitroethylene, (20) 3- (2-chloro-5-pyridylmethyl) -1,1-dimethyl-2-nitroguanidine, (21) 1- (2-chloro-5-pyridylmethylamino) -1-ethylamino-2-nitroethylene, (22) 1-amino-1- [N- (2-chloro-5
-Pyridylmethyl) -N-methylamino] -2-nitroethylene, (23) 3- (2-chloro-5-pyridylmethyl) -1,3-dimethyl-2-nitroguanidine,
(24) 3- (2-chloro-5-pyridylmethyl)-
1,1,3-trimethyl-2-nitroguanidine, (2
5) 1-amino-1- [N- (2-chloro-5-pyridylmethyl) -N-ethylamino] -2-nitroethylene, (26) 1- [N- (2-chloro-5-pyridylmethyl) ) -N-Ethylamino] -Nn-propylamino] -1-methylamino-2-nitroethylene, (2
7) 1- [N- (2-chloro-5-pyridylmethyl)-
N-ethylamino] -1-ethylamino-2-nitroethylene, (28) 3- (2-chloro-5-pyridylmethyl) -3-ethyl-1-methyl-2-nitroguanidine,
(29) 3- (2-chloro-5-thiazolylmethyl)-
1-methyl-2-nitroguanidine, (30) 1- (6
-Chloro-3-pyridylmethyl) -N-nitroimidazoline-2-ylideneamine and the like.

In the present invention, the content of the penetrating insecticide in the composition is preferably 0.1 to 10%. As an adhesive added to the composition, as a required function,
(I) that the active ingredient can be easily transferred to the plant, (ii) that the surface does not reattach to work clothes due to drying, (iii) becomes soft again due to precipitation or night fog, There is no particular limitation as long as the active ingredient is transferred to the plant again and (iv) it does not adversely affect the growth of the plant. For example, vinyl acetate-based adhesives (bonds for woodworking), vinyl acetate-based polymers such as vinyl acetate resins, and the like can be mentioned.

It is also possible to add a bactericide to the composition of the present invention. Examples of germicides that can be used include, in the form of coating germicides, thiophanatemethyl-containing germicides (trade name: Topzin M Paste: Nippon Soda Co., Ltd.), organic copper germicides (trade name: batch rate: Tomonoagrica). Co., Ltd.), polyoxin-containing germicidal coating agent (trade name: Kakengel: Kaken Pharmaceutical Co., Ltd.), iminoctazinate-containing germicidal coating agent (trade name: Befran coating agent: Sankei Chemical Co., Ltd., etc.) You can The content of the bactericide in the preparation is usually 0.1 to 1
It is about 0%. When containing such a bactericide,
It is particularly preferable because not only plant pests that occur in citrus fruits but also plant diseases can be controlled at the same time.

In addition, in the pharmaceutical composition of the present invention, other additives such as pigments and phytohormonal agents are added, if necessary, in order to improve work efficiency, promotion of mixing, and promotion of shoot development. be able to.

The composition of the present invention can be used by applying it to the cut surface of pruning for controlling the plant pests after the summer pruning of citrus fruits such as Satsuma mandarin. An example of its use is shown in FIG. That is, in FIG. 1, when the agent of the present invention is directly applied to the cut surface of pruning, the applied agent has a penetrating and migrating property, so that it penetrates into shoots near the cut surface and can prevent damage of pests. Is. Also,
The composition of the present invention can be used by injecting the composition into a grafted part for controlling plant pests during citrus grafting. An example of its use is shown in FIG. The tape (grafted tape) wrapped to fix and protect the grafted scion is cut with a knife when the shoots start to grow. When a drug is injected into the grafted portion during this incision process, the drug moves to shoots emerging from the scion and controls pests. Needless to say, the composition of the present invention can be used not only for citrus fruits but also for controlling harmful insects such as ornamental plants such as fruit trees and roses.

[0021]

Next, the present invention will be described in more detail with reference to examples. (1) Preparation of drug A chloronicotinyl insecticide (acetamiprid or imidacloprid) which is a penetrating insecticide, a vinyl acetate resin-containing material [thiophanate methyl coating agent (trade name: Topzin M paste)], a vinyl acetate adhesive ( Trade name: bond for woodworking), mineral starch, surfactant, etc. were mixed and prepared at the following predetermined ratios. In addition, acetamiprid (manufactured by Nippon Soda Co., Ltd.) is a bulk powder and a commercially available mospiran wettable powder (manufactured by Nippon Soda Co., Ltd.), and imidacloprid is a commercially available Admeier wettable powder (Japan Bayer Agrochem Co., Ltd.).
(Manufactured by K.K.) was used and mixed so that the active ingredient was 2%.

Example 1 Acetamiprid: 2 parts Mineral fine powder, surfactant, etc .: 18 parts Woodworking bond: 80 parts

Example 2 Acetamiprid: 2 parts Mineral fine powder, surfactant, etc .: 18 parts Thiophanatomethyl coating agent: 80 parts

Example 3 Imidacloprid: 2 parts Mineral fine powder, surfactant, etc .: 18 parts Woodworking bond: 80 parts

Example 4 Imidacloprid: 2 parts Mineral fine powder, surfactant, etc .: 18 parts Thiophanatomethyl coating agent: 80 parts

Example 5 Acetamiprid: 2 parts Fine mineral powder, surfactant, etc .: 18 parts Bond for woodworking: 80 parts

(2) Method of Drug Treatment Test Example 1 As shown in FIG. 1, a branch of Qingdao Wenzhou (one of the high sugar content Wenzhou mandarin varieties) with a diameter of about 1 cm was cut off, and a drug prepared on the cut surface was prepared. Applied. Thirty five days after the treatment, damage to mandarin orange squirrels on the distance from the cut surface and the developed leaves was investigated. Table 1 shows the survey results. As shown in Table 1, the penetrating insecticides acetamiprid and imidacloprid prevented the damage of citrus fruit moth, which occurs in shoots around the cut surface.

[0028]

[Table 1]

Test Example 2 As shown in FIG. 2, Aoshima Wenzhou was used as a scrub, and high-coupling was renewed all at once, and a graft tape was wrapped around the graft part. Approximately 2 months later, the tape of the sprouting buds was cut open, and the drug was injected into the graft. Five days later, the aphid parasitic bud rate was investigated according to the standards of the Japan Plant Protection Association. The survey results are shown in Table 2. As shown in the table, it was revealed that aphids (major species: cotton aphid) can be controlled by injecting the grafted part once at the time of tape cutting after germination.

[0030]

[Table 2]

[0031]

As described above, the pharmaceutical composition of the present invention is applied to the cut surface of summer pruning such as citrus fruits, for example, Satsuma mandarin, or is injected into the grafting portion. It has an extremely excellent control effect against plant pests that tend to occur on new shoots near the grafted area. The pharmaceutical composition of the present invention is characterized by containing a vinyl acetate polymer. This product has (i) a film-forming property and has good work efficiency because it does not redeposit on work clothes due to surface drying. (Ii) It becomes soft again due to precipitation or night fog, and the active ingredient diffuses internally. Since it has a characteristic of being transferred to a plant again by the above, a reliable and lasting effect can be expected.

[Brief description of drawings]

1 is an example of the use of the composition of the present invention.

FIG. 2 is an example of using the composition of the present invention (grafting treatment).

[Explanation of symbols] Cut surface of pruning Container containing the plant pest control composition of the present invention Plant pest control composition of the present invention New shoot grafting section Grafting tape

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location A01N 37/34 101 A01N 37/34 101 37/52 37/52 43/40 101 43/40 101C 43/50 43 / 50 Q Z C 43/68 43/68 43/78 43/78 A Z 47/40 47/40 Z A 47/42 47/42 A 47/44 47/44 C08L 31/04 LHE C08L 31/04 LHE (72) Inventor Akiyoshi Miyata Higashian Shimosho, Tachibana-cho, Oshima-gun, Yamaguchi Prefecture Oshima Kitsutsu Laboratory, Yamaguchi Prefecture (72) Inventor Kenji Saito 2-2-1 Otemachi, Chiyoda-ku, Tokyo Inside Nippon Soda Co., Ltd.

Claims (6)

[Claims] 1. A citrus pest control composition, which comprises a penetrating insecticide and a vinyl acetate polymer. 2. A systemic insecticide is represented by the following formula [I]: [In the formula, R represents a hydrogen atom, a formyl group, an acetyl group, C
_1-4 alkyl group, 2-chloro-5-pyridylmethyl group or 2-chloro-5-thiazolylmethyl group, wherein A is a hydrogen atom, a C _1-4 alkyl group, an ethylene group bonded to B,
A trimethylene group that binds to B or a chemical formula that binds to B: Represents a group represented by (R ¹ represents a hydrogen atom or a C _1-4 alkyl group). B is a C _1-4 alkyl group, SR ² (R
² represents a C _1-4 alkyl group. ), Chemical formula 3, (R ^3, R ⁴ are each a hydrogen atom,. Represents methyl group or ethyl group) -S- bonded group represented by the A, A
A methylene group that binds to or a bond that binds to A, (R ⁵ represents a hydrogen atom or a C _1-4 alkyl group). Y represents N or CR ⁶ (R ⁶ is
It represents a hydrogen atom or a C _1-4 alkyl group. ), And X represents a nitro group or a cyano group. ] The control agent composition of the citrus pest of Claim 1 which is a compound represented by these. 3. The content of the penetrating insecticide in the agent is 0.1 to 0.1.
The composition for controlling citrus pests according to claim 1, which is 10% by weight. 4. A method for controlling citrus pests, which comprises applying the composition for controlling citrus pests according to claim 1 to a cut surface obtained by pruning citrus fruits. 5. A method for controlling plant pests, which comprises injecting a composition containing a penetrating bactericide and a vinyl acetate-based polymer into a plant grafting part. 6. A method for controlling citrus pests, which comprises injecting a composition containing a penetrating bactericide and a vinyl acetate-based polymer into a grafted portion of a citrus plant.