JP2003055109A - Weeding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weeding method by which weeding prevention is effectively carried out with a smaller amount of a herbicide. SOLUTION: This weeding method comprises combining application of a herbicide composed of one or more kinds of compounds as active ingredients selected from oxyfluorfen, butafenacil, azafendin, flumioxazin, norflurazon, propyzamide, isoxaben, diuron, terbuthylazine, terbumeton and flazasulfuron with covering the surface of soil with a vegetative solid material.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a herbicidal method in which application of a specific herbicide and mulching with a plant solid matter are combined.

[0002]

2. Description of the Related Art In recent years, as interest in organic farming has increased, so-called organic matter mulching, which covers the soil surface with various organic matter materials, has been adopted in various situations. It became so. Organic matter mulching provides good growth conditions for crops by preventing soil surface drying, preventing soil erosion, improving soil physical properties, and supplying nutrients. Further, although it is expected to have an effect of suppressing the growth of weeds, the use conditions and types of weeds that have the effect are limited, and the effect is not always sufficient.
On the other hand, herbicides are not limited to agricultural lands such as rice fields and orchards, but include levee slopes, riverbeds, road shoulders and slopes, railroad surfaces,
It is also used in non-agricultural land such as park green spaces, parking lots, fallow land, and open land in the city, but it is required to reduce the load on the environment. Under such circumstances, there is a demand for a herbicidal method that enhances the stability of the efficacy of the herbicide and can effectively control weeds with a smaller amount of the herbicide.

[0003]

Means for Solving the Problems As a result of diligent studies, the present inventor has found that an excellent herbicidal effect can be obtained by combining a specific herbicide treatment with covering of the soil surface with a plant solid. The present invention has been completed and the present invention has been completed. That is, the present invention, a step of spraying one or more herbicides selected from oxyfluorfen, butaphenacyl, azaphenidine, flumioxazin, norflurazone, propizzamide, isoxaben, diuron, terbutyrazine, terbumetone and flazasulfuron to the target site, and plant-based agents. Provided is a method for weeding weeds, which comprises a step of covering a solid surface with a soil surface at a target location.

[0004]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, oxyfluorfen, an active ingredient of a herbicide, oxyfluorfen, butafenacil, azafendin,
Flumioxazin, norflurazone (norf
lurazon), propyzamide, isoxaben
(isoxaben), diuron, terbutyrazine (terbu
thylazine), terbumeton, and flazasulfuron are herbicide handbooks (Agricultural and mountain village cultural association ISBN 4-540-96060-1), Agricultural Chemicals Handbook 2001 (Chemical Industry Daily, ISBN).
4-87326-361-1), Farm Chemicals Handbook 2001 (Farm Chemicals).
Handbook 2001, Meister Pub
lighting Company, ISBN 1-89
2829-05-3), Weed Control Manual 32nd Edition (Weed Control Manual)
Volume32, Meister Publish
ng Company, ISBN 1-892829-0
4-5) and the like. Some of the herbicides containing the above compound as an active ingredient are commercially available. The herbicide in the present invention means a preparation processed into a dosage form such as an emulsion, a wettable powder, a suspension, a concentrated emulsion, a wettable granule, etc., containing one or more of the above compounds as an active ingredient, and sprayed. When it is used, it is usually diluted with a predetermined amount of water before use. In the present invention, the active ingredient of the herbicide,
PPO-inhibiting herbicidal active ingredients such as butaphenacyl, azaphenidine and flumioxazin are preferred.

The plant solid in the present invention means a plant solid.
Various solid substances obtained from tissues such as leaves, stems (stems) and fruits
Means, specifically, dead leaves, pine needles, straw, garlands, trees
Examples include skins, pieces of wood, and tree branches. Negative for the environment
From the viewpoint of load, availability, cost and effect, it is derived from wood materials.
Solids and wood chips are preferred. Fine wood in the present invention
Pieces are finely crushed timber, shredded tree branches
The thing which crushed the bark of the thing and the wood is mentioned. Wood strips
Some are commercially available for mulching,
Wood chips that are distributed for
Marketed for breeding pets such as small animals and insects
Used wood processed products, wood chips for fuel and smoke
You can also do it. Furthermore, felled materials such as lower branches, wood processing
It is also possible to manufacture locally using waste materials. Book
The wood piece of the invention has a major part of 0.005 cm³~ 1
00 cm³It is preferable that the size is 0.
02 cm ³~ 20 cm³The one with the size of
Yes.

In the present invention, oxyfluorfen,
Butaphenacyl, azaphenidine, flumioxazine,
A step of applying one or more herbicides selected from norflurazon, propizzamide, isoxaben, diuron, terbutyrazine, terbumetone and flazasulfuron to the target site and a step of covering the soil surface with the plant solid matter at the target site. In the method of the present invention, which has (1) oxyfluorfen, butaphenacyl, azaphenidine, flumioxazin, norflurazone, propizzamide, isoxaben, diuron, terbutyrazine, terbumethone and flazasulfuron as the active ingredient After spraying the agent on the soil surface at the target location, a method of covering the soil surface on which the herbicide is sprayed with a vegetable solid [hereinafter, referred to as the present invention method 1. 〕,and,
(2) After covering the soil surface of the target place with a plant solid, oxyfluorfen, butaphenacyl, azaphenidine, flumioxazin, norflurazone, propyzamide, isoxaben, diuron, terbutyrazine, terbumethone are placed on the covered plant solid. And a method of spraying a herbicide containing one or more compounds selected from flazasulfuron as an active ingredient [hereinafter, referred to as the present invention method 2. ] Is included. Hereinafter, each method will be described.

In the method 1 of the present invention, the amount of the herbicide sprayed varies depending on the kind of the active ingredient, but is usually 0.01 g to 20000 g, preferably 1 g to 12000 g per hectare. The amount of water used for dilution varies depending on weather conditions, formulation form, treatment time, spraying method, soil conditions, and type of target weed, but is usually 100 to 2000 liters per hectare. The spraying is usually carried out using a backpack sprayer, a running automatic sprayer, or the like. After the application of the herbicide, the plant solid matter is generally covered on the soil surface by 30 days after the application of the herbicide, preferably by 10 days after the application of the herbicide. The amount of vegetative solids covered varies depending on the type, but in the case of wood chips, for example,
Converted to dry weight, usually 1,000 kg / ha to 500,
000 kg / ha, more preferably 5,000 kg / h
a to 100,000 kg / ha. It is desirable that the plant solids be covered as uniformly as possible with respect to the treated soil of the herbicide, but the covering unevenness in a small area is
It does not greatly affect the effect.

In the method 2 of the present invention, the covering amount of the vegetable solid varies depending on the kind. For example, in the case of wood chips, it is usually 1,000 kg / ha to 5 in terms of dry weight.
000kg / ha, more preferably 5,000kg
/ Ha to 100,000 kg / ha. It is desirable that the vegetable solids are covered as uniformly as possible, but uneven covering in a small area does not significantly affect the effect. In soil covered with plant solids, it is usually effective within the season (about 3 months) depending on weather conditions, soil conditions, and type of covered plant solids. Have an effect. The amount of herbicide sprayed varies depending on the type of the active ingredient, but is usually 0.01 g to 20000 as an active ingredient per hectare.
g, preferably 1 g to 12000 g. The amount of water used for dilution varies depending on weather conditions, formulation form, treatment time, spraying method, soil conditions, and type of target weed, but is usually 100 to 2000 liters per hectare.
The spraying is usually carried out using a backpack sprayer, a running automatic sprayer, or the like.

[0009]

The present invention will be specifically described below with reference to examples, but the present invention is not limited thereto. First, formulation examples of the herbicide used in the present invention are shown. Formulation Example 1 Oxyfluorfen, butaphenacyl, azaphenidine, flumioxazin, norflurazone, propyzamide, isoxaben, diuron, terbutyrazine, terbumetone and flazasulfuron 50 parts each, calcium lignin sulfonate 3 parts, sodium lauryl sulfate 2
Parts and 45 parts of synthetic hydrous silicon oxide are well pulverized and mixed,
A 50% wettable powder was obtained.

Next, in the method of the present invention, it is shown that the herbicide exerts an excellent herbicidal effect. Example 1 A soil-filled plastic pot having an area (26.5 × 19) cm ² and a depth of 7 cm was filled with soil, and the plant was sewn (Ses).
bania exaltata) and barnyard grass (Ec)
hinochloa crus-galli) was seeded. Flumioxazin was used as a wettable powder according to Preparation Example 1,
The predetermined amount was diluted with water equivalent to 1000 liters per hectare, and sprayed uniformly on the entire surface of the soil with a sprayer. Immediately after the treatment, a predetermined amount of plant solid matter was covered and grown in a greenhouse for 20 days, and the herbicidal effect was investigated. For the evaluation of herbicidal efficacy, "0" is given when the growth condition of the test plant (weed) at the time of the survey is almost the same as that of the untreated plant.
The test plant is completely killed or the growth is completely suppressed as "10", and is divided into 11 stages of "0" to "10", and "0", "1", "2", "3", "4", "5", "6",
It is indicated by "7", "8", "9" or "10". The results are shown in Table 1. The wood chips A used in this example are mainly wood (poplar) cut into a size of 0.02 cm ^{2 to} 0.05 cm ³ (wood chips for raising small animals; The land of Walla Aspen '', made by Sud Co., Ltd.). The wood chip B is mainly wood (cherry tree) cut into a size of 0.02 m ^{2 to} 0.05 m ³ (wood chip for smoked production; “smoke chip”, manufactured by Marca Metal Co., Ltd.). .

[Table 1]

Example 2 A plastic pot having an area (26.5 × 19) cm ² and a depth of 7 cm was filled with soil, and the soil was filled with soil.
bania exaltata) and barnyard grass (Ec)
hinochloa crus-galli) was seeded. Immediately after laying a predetermined amount of vegetable solids, flumioxazin was made into a wettable powder according to Preparation Example 1, and the predetermined amount was changed to 1
Dilute with 1000 liters of water equivalent per hectare,
Sprayed evenly over the entire surface with a sprayer. After the treatment, the plants were grown in a greenhouse for 20 days and the herbicidal efficacy was investigated. The results are shown in Table 2. The wood chips A used in this example are mainly wood (poplar) cut into a size of 0.02 cm ^{2 to} 0.05 cm ³ (wood chips for raising small animals; The land of Walla Aspen '', made by Sud Co., Ltd.).

[Table 2]

Example 3 A plastic pot having an area of (26.5 × 19) cm ² and a depth of 7 cm was filled with soil, and velvetleaf (Abutilon t) was used.
heophrasti) and American morning glory (Ip)
omoea hederacea) was seeded. Flumioxazin was used as a wettable powder according to Preparation Example 1, and a predetermined amount thereof was diluted with water equivalent to 1000 liters per hectare, and sprayed uniformly on the entire surface of the soil with a sprayer. Immediately after the treatment, a predetermined amount of plant solid matter was covered and grown in a greenhouse for 10 days, and the herbicidal effect was investigated. The results are shown in Table 3. The wood chips B used in this example are wood (cherry) mainly cut into a size of 0.02 m ^{2 to} 0.05 m ³ (wood chips for smoked production; “smoked chips”). , Marca Metal Co., Ltd.).

[Table 3]

Example 4 Soil was packed in a plastic pot having an area (26.5 × 19) cm ² and a depth of 7 cm, and the plant was sesame seed (Ses).
bania exaltata) and Aquinoe foxtail (Setaria Faberi) were inoculated. Diuron commercial formulation (Karmex 79.5% wettable powder)
Was diluted with water equivalent to 1000 liters per hectare and sprayed uniformly on the entire surface of the soil with a sprayer.
After the treatment, a predetermined amount of plant solid matter was covered and grown in a greenhouse for 20 days, and the herbicidal effect was investigated. The results are shown in Table 4.
The wood chip A used in this example is mainly wood (poplar) cut into a size of 0.02 cm ^{2 to} 0.05 cm ³ (wood chip for raising small animals;
"The ground of straw aspen for small animals", made by Sud Co., Ltd.). The wood chip B is mainly wood (cherry tree) cut into a size of 0.02 m ^{2 to} 0.05 m ³ (wood chip for smoked production; “smoke chip”, manufactured by Marca Metal Co., Ltd.). .

[Table 4]

[0014]

By using the weeding method of the present invention,
Excellent herbicidal effect is obtained.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) A01N 43/54 A01N 43/54 F 43/58 43/58 C 43/70 43/70 43/80 101 43 / 80 101 43/84 101 43/84 101 43/90 104 43/90 104 47/30 47/30 B 47/36 101 47/36 101E F term (reference) 2B024 BA02 DA06 DB10 DC10 2B121 AA19 BB30 CC05 EA21 EA25 FA12 4H011 AB01 BA01 BB04 BB06 BB09 BB10 BB14 BC07 BC18 BC19 BC22 DA15 DC01 DC05 DD04 DH10

Claims (10)

[Claims] 1. An oxyfluorfen, butafenacil, azafendiine.
n), flumioxazin, norflurazone
herbicide containing at least one compound selected from (norflurazon), propyzamide, isoxaben, diuron, terbuthylazine, terbumeton and flazasulfuron as an active ingredient. A method for weeding weeds, the method comprising: spraying the plant to a target location; and covering the soil surface of the target location with a plant solid matter. 2. Oxyfluorfen, butafenacil, and azafendiine.
n), flumioxazin, norflurazone
herbicide containing at least one compound selected from (norflurazon), propyzamide, isoxaben, diuron, terbuthylazine, terbumeton and flazasulfuron as an active ingredient. A method for weeding weeds, which comprises applying the plant to the soil surface of the target site and then covering the soil surface on which the herbicide has been applied with a plant solid. 3. A method of covering a soil surface of a target site with a plant solid, and then covering the covered plant solid with oxyfluorfen, butafenacil,
Azafendin, flumioxazine (flumio
xazin), norflurazon, propizzamide
(propyzamide), isoxaben, diuron
uron), terbuthylazine, terbumeton and flazasulfur
On), a method of weeding a weed, which comprises applying a herbicide containing one or more compounds selected from (on) as an active ingredient. 4. The herbicide is oxyfluorfene.
en), butaphenacyl (butafenacil), azaphenidin (a
zafendin), flumioxazin (flumioxazin) and flazasulfuron (flazasulfuron) are one or more compounds selected from the herbicides as an active ingredient.
The method described in any one of. 5. The herbicide is oxyfluorfene.
en), butaphenacyl (butafenacil), azaphenidin (a
The method according to any one of claims 1 to 3, which is a herbicide containing one or more compounds selected from zafendin) and flumioxazin as an active ingredient. 6. The herbicide is butafenacil,
Azafendin and flumioxazin (fl
The method according to any one of claims 1 to 3, which is a herbicide containing at least one compound selected from umioxazin) as an active ingredient. 7. The herbicide is flumioxazin.
The method according to any one of claims 1 to 3, which is a herbicide containing as an active ingredient. 8. The plant-based solid matter is a wood strip.
~ A method for weeding a weed according to claim 7. 9. The covering amount of vegetable solids is 1,000 kg /
Ha-500,000 kg / ha (dry weight conversion), The weeding method of the weeds in any one of Claims 1-8. 10. The covering amount of vegetable solids is 5,000 kg.
/ Ha to 500,000 kg / ha (dry weight conversion), The weeding method of any one of Claims 1-8.