JPH0733618A - Nematicide preparation and method for using the same - Google Patents

Nematicide preparation and method for using the same

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Publication number
JPH0733618A
JPH0733618A JP5181061A JP18106193A JPH0733618A JP H0733618 A JPH0733618 A JP H0733618A JP 5181061 A JP5181061 A JP 5181061A JP 18106193 A JP18106193 A JP 18106193A JP H0733618 A JPH0733618 A JP H0733618A
Authority
JP
Japan
Prior art keywords
nematode
preparation
nematodes
water
slurry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5181061A
Other languages
Japanese (ja)
Inventor
Nobukazu Suzuki
伸和 鈴木
Toshihito Uechi
俊仁 植地
Mineo Tachibana
峰生 橘
Tadaaki Kawasugi
忠昭 河杉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP5181061A priority Critical patent/JPH0733618A/en
Publication of JPH0733618A publication Critical patent/JPH0733618A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To provide a nematicide preparation maintaining the storability of the nematicide at a high level under simple conditions and simultaneously capable of being readily utilized on its application, and a method for using the nematicide preparation, capable of exhibiting the high nematicidal property, when protecting a plant from the attacks of insect pests. CONSTITUTION:A nematicide and a water-insoluble substance having a particle diameter of <=300mum are dispersed in water to form a slurry having a water content of >=85wt.%. The slurried nematicide preparation is adhered to the soil-burying part of a seedling, and the seedling is planted in the soil.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】線虫類の中には昆虫と夾雑する状
態で、昆虫の口器、肛門、足関節等から昆虫の血体腔中
に侵入して、その昆虫を宿主とし、線虫体内に生息して
いる共生細菌を放出し、その宿主昆虫の免疫機構を破壊
するとともに、前記宿主昆虫の体内で増殖して、その宿
主昆虫を死に至らしめるような昆虫寄生性線虫が知られ
ている。また、このような昆虫寄生性線虫を用いて、農
作物等の植物に被害を与える害虫を殺虫して、前記植物
の被害を防ぐために、このような線虫類を大量に培養す
ることが考えられている。
[Industrial application] Some nematodes infiltrate the insect's body cavity, anus, ankle joints, etc. into the body cavities of the insect in a state of being contaminated with the insect, and use the insect as a host. An insect parasitic nematode that releases symbiotic bacteria that live in the body, destroys the immune mechanism of the host insect, and proliferates in the body of the host insect, causing the host insect to die is known. ing. Further, using such an insect parasitic nematode, it is possible to cultivate a large amount of such nematodes in order to kill pests that damage plants such as agricultural crops and prevent damage to the plants. Has been.

【0002】そこで本発明は、例えば、上述のような大
量培養した線虫類を圃場に施用する場合に、その線虫類
を施用可能な状態で保存する技術に関し、詳しくは、線
虫製剤及びその使用方法に関する。
Therefore, the present invention relates to a technique for, for example, storing a large amount of the above-cultivated nematodes in a field so that the nematodes can be stored in an applicable state. Regarding how to use it.

【0003】[0003]

【従来の技術】従来、線虫を保存する技術としては、
(1)蒸留水中に線虫を分散させた線虫懸濁液をエアレ
ーションして保存する方法、(2)前記線虫懸濁液をポ
リウレタンフォームや濾紙等の担体中に浸込ませて、そ
の担体を通気性を有する容器中で保存する方法、(3)
線虫類を乾燥し、仮死状態(乾燥生存状態)にして保存
する方法、(4)アルギン酸ゲル中にビーズ状又はフィ
ルム状に包含させて保存することが行われており、また
施用可能な状態に製剤化する技術としては、(5)線虫
をアタパルジャイト粘土に含水状態で混合する方法が考
えられている。
2. Description of the Related Art Conventionally, as a technique for storing nematodes,
(1) A method in which a nematode suspension in which nematodes are dispersed in distilled water is stored by aeration, and (2) the nematode suspension is immersed in a carrier such as polyurethane foam or filter paper, A method of storing a carrier in a container having air permeability, (3)
A method of storing nematodes in a state of asphyxia (survival in a dry state) by drying them, and (4) including them in the form of beads or a film in an alginate gel for storage, and in a ready-to-use state. As a technique for formulating into (1), (5) a method of mixing nematodes with attapulgite clay in a water-containing state is considered.

【0004】[0004]

【発明が解決しようとする課題】ところが上述した従来
の技術においては、以下のような欠点があった。
However, the conventional techniques described above have the following drawbacks.

【0005】すなわち(1)の方法においては常にエア
レーションが必要であり、そのエアレーションを行うた
めの装置が必要となるため、保存のための装置が大掛か
りになり、汎用性が伴わないものであった。(2)の方
法は、(1)に汎用性をもたせた方法であるが、担体中
に浸込んだ線虫類は施用の際に担体から分離回収せねば
ならず、この線虫回収操作は、困難であるとともに煩雑
なものであり、かつ長期保存に向かない。また、(3)
の方法では、線虫を活動状態に回復させ、施用可能にす
るために、水にもどす操作が必要となり、この操作に時
間がかかる等の問題があり、(4)の方法においても施
用時にアルギン酸ゲルをクエン酸ナトリウム水溶液等を
用いて溶解せねばならず、この溶解操作に時間を要し、
煩雑になる等、これらの保存方法を用いた場合には施用
するための取扱いが煩雑であったり困難であったりする
欠点があった。
That is, in the method (1), aeration is always required, and a device for performing the aeration is required. Therefore, a device for storage becomes large in size, which is not versatile. . The method of (2) is a method in which (1) has general versatility, but nematodes impregnated in the carrier must be separated and recovered from the carrier at the time of application. It is difficult and complicated, and is not suitable for long-term storage. Also, (3)
In the method of (4), in order to restore the nematodes to the active state and to make them applicable, it is necessary to return the nematodes to water, and there is a problem that this operation takes time. In the method of (4), alginic acid is also applied. The gel must be dissolved using an aqueous solution of sodium citrate, etc., and this dissolution operation requires time,
When these storage methods are used, there is a drawback that handling for application is complicated or difficult, such as being complicated.

【0006】これらの欠点を解決するために(5)の方
法が提案されているが、線虫類の保存性を高く維持する
ためには粘土中に自由水の存在しない条件下(水分量3
3〜67%)で混合せねばならないと考えられていたた
め、施用の際散布機で散布する場合には、水にもどす等
の加工が煩雑になる他、粘土は粒径の大きいものを含む
ので、ノズル孔径の小さな散布機等では直接用いること
が出来ない等の欠点を有していた。
In order to solve these drawbacks, the method (5) has been proposed. However, in order to keep the storage stability of nematodes at a high level, clay does not contain free water (a water content of 3).
3 to 67%), it was thought that the mixture must be mixed at a rate of 3 to 67%. Therefore, when spraying with a spreader at the time of application, processing such as returning to water becomes complicated, and clay contains particles with a large particle size. However, it has a defect that it cannot be used directly in a sprayer having a small nozzle hole diameter.

【0007】そこで、本発明の目的は、上記欠点に鑑
み、簡単な条件下で線虫類の保存性を高く維持しなが
ら、施用の際に容易に利用出来る線虫製剤、及び、その
ような線虫製剤を用いて、植物を害虫による被害から守
る場合に高い殺虫性を発揮することのできる使用方法を
提供することにある。
Therefore, in view of the above-mentioned drawbacks, an object of the present invention is to provide a nematode preparation which can be easily used during application while maintaining high preservation of nematodes under simple conditions, and such a preparation. It is an object of the present invention to provide a method for using a nematode formulation, which can exert high insecticidal activity when protecting a plant from damage by a pest.

【0008】[0008]

【課題を解決するための手段】この目的を達成するため
の本発明の線虫製剤の特徴構成は、線虫及び粒径300
μm以下で水に不溶の固形物を、水中に分散させて水分
量85wt%以上のスラリー状にしてあることにあり、
前記固形物がシリカであればなおよく、さらに、本発明
の線虫製剤の使用方法の特徴手段は植物の苗の土中埋込
部分や種子に、前記線虫製剤を付着させた後、その苗又
は種子を土中に植え付けることにあり、そこから得られ
る作用効果は以下のとおりである。
To achieve this object, the nematode preparation of the present invention is characterized by a nematode and a particle size of 300.
A solid substance insoluble in water having a size of less than or equal to μm is dispersed in water to form a slurry having a water content of 85 wt% or more.
The solid matter is better if it is silica, and further, the characteristic means of the method of using the nematode formulation of the present invention is the soil-embedded portion or seed of a plant seedling, after the nematode formulation is attached, The seedlings or seeds are planted in the soil, and the actions and effects obtained therefrom are as follows.

【0009】[0009]

【作用】つまり、線虫製剤をスラリー状にしてあること
から、施用の際にも、簡単に水に分散させることがで
き、そのスラリーを構成する固形物が粒径300μm以
下としてあることで、ノズル孔径の小さな散布機を用い
たとしても目詰まりする等の不都合なく用いることが出
来るので、容易に施用することが出来るようになった。
In other words, since the nematode preparation is in the form of a slurry, it can be easily dispersed in water even when it is applied, and the solid matter constituting the slurry has a particle size of 300 μm or less, Even if a spreader having a small nozzle hole diameter is used, it can be used without inconvenience such as clogging, so that it can be easily applied.

【0010】また、固形物は水に不溶性であるため、水
中への酸素溶解量を減少させることなく、この線虫製剤
中の水分量を85%以上としてあることで、線虫類の高
い保存性を維持することが出来るということを実験的に
証明した。さらに、前記固形物がシリカであれば、線虫
と混在させた状態での水への分散性が高い。
Further, since the solid matter is insoluble in water, the water content of this nematode preparation is 85% or more without reducing the amount of oxygen dissolved in the water. It has been experimentally proved that sex can be maintained. Furthermore, if the solid substance is silica, it has high dispersibility in water in a state of being mixed with nematodes.

【0011】さらに土壌中に生息する害虫をターゲット
とする際、植物の苗の土中埋込部分や種子に昆虫寄生性
線虫を用いた線虫製剤を付着させた後、その苗又は種子
を植え付けることで用いれば、高効率でその植物を害虫
の被害から守ることが出来る。
Furthermore, when targeting pests that live in the soil, a nematode preparation using an insect parasitic nematode is attached to the soil-embedded part of the plant seedling or the seed, and the seedling or seed is then attached. When used by planting, the plant can be protected from pest damage with high efficiency.

【0012】[0012]

【発明の効果】従って、例えば、昆虫寄生性線虫からな
るこのような線虫製剤を用いた場合に、容易に施用する
ことが出来、且つ、線虫類の簡単な施用で、高い殺虫性
を維持した線虫製剤を提供することが出来、これによっ
て圃場等での農作物の被害を効率的に防ぐことが出来る
ようになった。
Therefore, for example, when such a nematode preparation comprising an insect parasitic nematode is used, it can be easily applied, and a simple application of nematodes results in high insecticidal activity. It is possible to provide a nematode preparation that maintains the above, and by doing so, it has become possible to effectively prevent damage to agricultural crops in fields and the like.

【0013】[0013]

【実施例】粒径3〜20μmのシリカ(SiO2含有量
90wt%以上のもの)を水に懸濁分散させたスラリー
に、昆虫寄生性線虫の一例であるスタイナーネマ・クシ
ダイ(Steinernema kushidai, 以下クシダイと称す)を
混入して、水分量90wt%にして、1mlあたり10
万頭のクシダイを含有するスラリー状の線虫製剤を調製
した。
[Examples] Steinernema kushidai (hereinafter, Steinernema kushidai), which is an example of an insect parasitic nematode, was added to a slurry prepared by suspending and dispersing silica (having a SiO 2 content of 90 wt% or more) having a particle size of 3 to 20 μm in water. (Kushidai) is mixed to make the water content 90 wt% and 10 per 1 ml.
A nematode formulation in the form of a slurry containing ten thousand kushidai was prepared.

【0014】この線虫製剤を保存容器に収容し、相対湿
度80%で20〜30℃の温度サイクルを人工気象器で
設定した夏場の室温環境において保存した。尚、クシダ
イは、ドッグフードを主成分とする培地で培養したもの
をベルマン法で回収後、0.1%ホルマリン水溶液で表
面殺菌して用い、保存容器は底が平らで上部に開口を有
する直径16mmの円柱状の容器であり、その保存容器
には前記線虫製剤を1ml(水深約5mm)収容して、
上部の開口をフィルム(クリアラムパッケージング社製
プラスチックフィルム)でシールした後、中央に小さな
穴を開けて用いた。
This nematode preparation was placed in a storage container and stored in a room temperature environment in the summer when a temperature cycle of 20 to 30 ° C. at a relative humidity of 80% was set by an artificial weather device. The kushidai was used after culturing in a medium containing dog food as the main component, which was collected by the Bellman method and surface-sterilized with a 0.1% formalin aqueous solution, and the storage container had a flat bottom and an opening at the top of 16 mm in diameter. Is a cylindrical container, and the storage container contains 1 ml of the nematode preparation (water depth of about 5 mm),
The upper opening was sealed with a film (plastic film manufactured by Clearrum Packaging Co., Ltd.), and then a small hole was opened in the center for use.

【0015】その結果、過酷な環境条件で保存したにも
関わらず、7日後においても96.5%の線虫が生存し
ていることがわかった。
As a result, it was found that 96.5% of the nematodes survived after 7 days despite being stored under severe environmental conditions.

【0016】また、このような線虫製剤をサツマイモの
苗の根部に付着させ、植え付けたところ、害虫による被
害度は、従来化学農薬を用いて防除しつつ栽培した場合
に比して1/3程度にまで減少した。
Further, when such a nematode preparation was attached to the roots of sweet potato seedlings and planted, the degree of damage caused by harmful insects was 1/3 that in the case of cultivation while controlling with conventional chemical pesticides. It was reduced to the extent.

【0017】以下に様々に調製した線虫製剤に関する試
験例を示す。
Test examples relating to variously prepared nematode preparations are shown below.

【0018】〔試験例1〕:線虫の生存率の水分量依存
性 様々な粒径のシリカを水に懸濁分散させたスラリーに、
クシダイを10万頭/mlの割合で混入して、水分量を
種々の割合に調製した線虫製剤を用い、前記保存容器で
前記夏場の室温環境で7日間保存して、線虫の生存率を
調べた。その結果、表1のようになった。尚、比較例と
あるものは蒸留水中に線虫のみを分散させた線虫製剤の
試験例である。
[Test Example 1]: Dependence of the survival rate of nematodes on the water content A silica slurry having various particle sizes was suspended and dispersed in water, and
The nematode survival rate was obtained by using nematode preparations prepared by mixing kushidai at a rate of 100,000 heads / ml and adjusting the water content to various ratios, and storing the nematode in the storage container in the summer room temperature environment for 7 days. I checked. As a result, the results are shown in Table 1. The comparative examples are test examples of nematode preparations in which only nematodes were dispersed in distilled water.

【0019】[0019]

【表1】 [Table 1]

【0020】ところで、シリカは粒径が500μm以上
のものを用いた場合には、散布機で散布を行う場合に、
ノズルの孔に詰まるので使用出来ない。つまり、シリカ
の粒径によって、それぞれ範囲は異なるものの、スラリ
ーの水分量を調整すれば線虫類の生存率を高くすること
が出来、シリカの粒径を300μm以下としてあれば、
水分量を85%以上に調整することで極めて高い生存率
を得ることが出来ることがわかった。また、シリカの粒
径が300μm〜500μmであった場合には、線虫製
剤自体がスラリー状になりにくいという欠点があること
もわかった。これらのことから、線虫製剤は、スラリー
状を維持する程度の粘性をもっていれば、線虫製剤内部
で線虫が沈殿することなく運動出来て、酸素欠乏状態に
なりにくくなり、線虫の生存率を高く維持出来るように
なると考えられ、また、水分量が過多、或いは、シリカ
の粒径が大きすぎるような場合、粘性が低下して線虫が
沈殿してしまい、酸素欠乏状態を招くことで生存率が低
下するものと考えられる。
By the way, when silica having a particle size of 500 μm or more is used, and when spraying with a sprayer,
Cannot be used as it clogs the nozzle hole. That is, although the range varies depending on the particle size of silica, the survival rate of nematodes can be increased by adjusting the water content of the slurry, and if the particle size of silica is 300 μm or less,
It was found that an extremely high survival rate can be obtained by adjusting the water content to 85% or more. It was also found that when the particle size of silica is 300 μm to 500 μm, the nematode preparation itself is unlikely to form a slurry. From these facts, if the nematode preparation has a viscosity that maintains a slurry state, the nematode can move without being precipitated inside the nematode preparation, and it becomes difficult for the nematode to become oxygen-deficient, and the nematode survives. It is thought that the rate can be maintained high, and when the water content is excessive or the particle size of silica is too large, the viscosity decreases and the nematodes precipitate, leading to an oxygen deficiency state. It is thought that the survival rate will be reduced.

【0021】〔試験例2〕:線虫生存率の線虫密度依存
性 (1) 粒径50〜300μmのシリカ(SiO2含有
量90wt%以上のもの)を水に懸濁分散させたスラリ
ーにクシダイを混入して、水分量87.5%になるよう
にして、それぞれ1mlあたり5万頭〜40万頭の線虫
を有する種々のスラリー状の線虫製剤を調整した。これ
らの線虫製剤を、前記保存容器内で前記夏場の室温環境
で14日間保存し、その線虫製剤中の線虫の生存率を調
べた。 (2) 前記クシダイをスタイナーネマ・カルポカプサ
エAll(Steinernemacarpocapsae All,以下Allと
略称する)にかえ、同様に生存率を調べた。その結果、
表2のようになった。
[Test Example 2]: Dependence of nematode survival rate on nematode density (1) A slurry in which silica having a particle size of 50 to 300 μm (having a SiO 2 content of 90 wt% or more) is suspended and dispersed in water. Various slurry-form nematode preparations having 50,000 to 400,000 head worms per ml were prepared by mixing kushidai with the water content of 87.5%. These nematode preparations were stored in the storage container in the room temperature environment in the summer for 14 days, and the survival rate of the nematodes in the nematode preparation was examined. (2) The above kushidai was replaced with Steinernema carpocapsae All (Steinernemacarpocapsae All, hereinafter abbreviated as All), and the survival rate was similarly examined. as a result,
It became like Table 2.

【0022】[0022]

【表2】 [Table 2]

【0023】つまり、表2から線虫製剤に含まれる線虫
は、20万頭/ml以下の線虫密度にしてあれば、高い
生存率で線虫を保存することが出来、さらに望ましく
は、10万頭/ml以下の線虫密度にしてあれば、極め
て高い生存率の線虫製剤をつくることが出来ることがわ
かった。また、クシダイのみならずAllであっても、
高い生存率を示す線虫製剤を製造可能であることがわか
り、他の線虫に対しても線虫の生存率を高く、製剤化可
能であることが示唆された。つまり、本発明の線虫製剤
に用いる線虫は、試験例1,2に用いたクシダイやAl
lに限られるものではなく、他の一般の線虫にも適用出
来るものである。
That is, from Table 2, the nematodes contained in the nematode preparation can be preserved with a high survival rate if the nematode density is 200,000 heads / ml or less, and more preferably, It has been found that a nematode preparation having an extremely high survival rate can be prepared if the nematode density is 100,000 heads / ml or less. Also, not only combed die but also All,
It was found that a nematode preparation exhibiting a high survival rate could be produced, and it was suggested that the nematode has a high survival rate against other nematodes and can be formulated. That is, the nematodes used in the nematode preparation of the present invention are the kushidai or Al used in Test Examples 1 and 2.
It is not limited to 1 and can be applied to other general nematodes.

【0024】〔試験例3〕:線虫生存率の保存温度依存
性 粒径50〜300μmのシリカ(SiO2含有量90w
t%以上のもの)を水に懸濁分散させたスラリーに、ク
シダイを混入して、水分量87.5%になるようにし
て、それぞれ1mlあたり10万頭の線虫を含んだスラ
リー状の線虫製剤を調整した。この線虫製剤を前記保存
容器中で15℃,20℃,30℃,で各別に保存し、そ
の線虫製剤中の線虫の生存率を経日的に調べた。その結
果、表3のようになった。
[Test Example 3]: Dependence of nematode survival rate on storage temperature Silica having a particle size of 50 to 300 μm (SiO 2 content 90 w
(amount of t% or more) is suspended and dispersed in water to prepare a slurry-like mixture containing 100,000 nematodes per 1 ml by mixing kushidai with a water content of 87.5%. A nematode formulation was prepared. The nematode preparation was separately stored in the storage container at 15 ° C., 20 ° C. and 30 ° C., and the survival rate of the nematodes in the nematode preparation was examined daily. As a result, the results are shown in Table 3.

【0025】[0025]

【表3】 [Table 3]

【0026】つまり、表3より、本発明の線虫製剤は、
従来の保存方法と同様に15℃〜25℃の一定温度での
保存で、生存率高く線虫類を保存でき、54日後におい
ても高い生存率を維持出来ていることがわかり、恒温条
件下ではかなりの長期にわたる保存が可能であることが
わかる。
That is, from Table 3, the nematode preparation of the present invention is
It was found that by keeping at a constant temperature of 15 ° C to 25 ° C as in the conventional preservation method, the nematodes can be preserved with a high survival rate, and the high survival rate can be maintained even after 54 days. It can be seen that it can be stored for a considerably long period of time.

【0027】〔試験例4〕:線虫製剤をスラリー状にす
る方法の検討 線虫製剤をスラリー状にするのに、シリカに替えてグア
ガム、アルギン酸ナトリウムを用いて1mlあたり10
万頭のクシダイを含むスラリー状の線虫製剤を種々調整
し、これら線虫製剤を、前記保存容器中、前記夏場の室
温環境で14日間保存し、それぞれの線虫製剤中での線
虫の生存率を調べた。尚、比較のため、粒径3〜20μ
mのシリカを用いて調整した線虫製剤についても、同条
件において生存率を調べた。その結果、表4のようにな
った。
[Test Example 4]: Examination of a method for making a nematode preparation into a slurry. To make a nematode preparation into a slurry, guar gum and sodium alginate were used instead of silica, and the amount was 10 per 1 ml.
Various nematode preparations in the form of a slurry containing ten thousand kushidai were prepared, and these nematode preparations were stored in the storage container in the summer room temperature environment for 14 days. The survival rate was examined. For comparison, the particle size is 3 to 20 μm.
The nematode preparation prepared using m of silica was also examined for survival rate under the same conditions. As a result, the results are shown in Table 4.

【0028】[0028]

【表4】 [Table 4]

【0029】表4より線虫製剤をスラリー状にするに、
グアガム、アルギン酸ナトリウムを用いた場合には、線
虫製剤を、たとえ線虫の活動可能な粘度のスラリー状に
したとしても、線虫の生存率を向上させることが出来な
いということがわかる。このことは、水溶性の材料を用
いてスラリーを調整した場合には、スラリー中への酸素
溶解量が減少し、線虫が酸素欠乏状態になりやすいため
ではないかと考えられる。つまり、線虫製剤をスラリー
状にするに、水不溶性の固形物を用いることで、線虫が
沈殿することなく、運動出来る粘度のスラリーを調整で
きるとともに、スラリー中への酸素溶解量を減少させる
ことがないので、線虫類を高い生存率で保存することが
出来ることがわかった。また、水不溶性の固形物とし
て、シリカ等の無機物を用いれば、雑菌等の混入も起き
難いという利点があり、製剤化に適していると云える。
From Table 4, the nematode preparation is made into a slurry,
It can be seen that when guar gum and sodium alginate are used, the nematode survival rate cannot be improved even if the nematode preparation is made into a slurry having a viscosity that allows nematodes to be active. It is considered that this is because when the slurry is prepared using a water-soluble material, the amount of oxygen dissolved in the slurry is reduced, and the nematodes are likely to be in an oxygen-deficient state. In other words, by using a water-insoluble solid substance to make a nematode preparation into a slurry, it is possible to adjust a slurry having a viscosity that allows the nematodes to move without causing sedimentation and reduce the amount of oxygen dissolved in the slurry. Therefore, it was found that nematodes can be preserved with high survival rate. In addition, if an inorganic substance such as silica is used as the water-insoluble solid substance, there is an advantage that contaminants and the like are unlikely to be mixed in, and it can be said that it is suitable for formulation.

【0030】〔試験例5〕:線虫製剤を大量のスラリー
状にする方法の検討 (1) 粒径50〜300μmのシリカ(SiO2含有
量90wt%以上のもの)を水に懸濁分散させたスラリ
ーにクシダイを混入して、水分量87.5%にして、1
mlあたり10万頭のクシダイを含有するスラリー状の
線虫製剤を調整した。底が平らで上部に開口を有する長
方形のプラスチック製容器に、前記線虫製剤を50ml
入れ、前記開口を通気性のフィルム(三井東圧社製エス
ポアール)でシールした後、前記夏場の室温条件で保存
し、その線虫製剤中の線虫の生存率を経日的に調べた。
[Test Example 5]: Examination of a method for forming a large amount of slurry of nematode preparation (1) Suspending and dispersing silica having a particle size of 50 to 300 μm (having a SiO 2 content of 90 wt% or more) in water Mix Kushidai with the slurry to make the water content 87.5%, and
A nematode preparation in the form of a slurry containing 100,000 beetles per ml was prepared. 50 ml of the nematode preparation is placed in a rectangular plastic container having a flat bottom and an opening at the top.
Then, the opening was sealed with a breathable film (Espoir, manufactured by Mitsui Toatsu Co., Ltd.), and stored under the room temperature condition in the summer, and the survival rate of nematodes in the nematode preparation was examined daily.

【0031】(2) 80mm×100mm×20mm
のポリウレタンフォームに、1mlあたり10万頭の中
を蒸留水に懸濁させて調整した線虫懸濁液を50ml浸
込ませた後、通気性のフィルムでつくった袋の中に入れ
て、前記夏場の室温条件で保存し、その袋の中の線虫の
生存率を経日的に調べた。
(2) 80 mm × 100 mm × 20 mm
50 ml of a nematode suspension prepared by suspending 100,000 heads per ml of distilled water in 1 ml of polyurethane foam is placed in a bag made of a breathable film, The bag was stored at room temperature in summer, and the survival rate of nematodes in the bag was examined daily.

【0032】その結果、表5のようになった。As a result, the results are shown in Table 5.

【0033】[0033]

【表5】 [Table 5]

【0034】表5より、本発明の線虫製剤(1)によれ
ば、従来の線虫の保存方法に比べて、過酷な保存環境で
あったとしても、生存率高く、保存出来ることがわか
る。つまり、本発明の線虫製剤は、優れた保存性を有す
るものであることがわかった。
From Table 5, it can be seen that the nematode preparation (1) of the present invention has a high survival rate and can be stored even in a severe storage environment as compared with the conventional storage method for nematodes. . That is, it was found that the nematode preparation of the present invention has excellent storability.

【0035】〔試験例6〕:線虫製剤の施用方法の検討 (1) 粒径50〜300μmのシリカ(SiO2含有
量90wt%以上のもの)を水に懸濁分散させたスラリ
ーにクシダイを混入して、水分量87.5%にして、1
mlあたり10万頭のクシダイを含有するスラリー状の
線虫製剤を調整した。
[Test Example 6]: Examination of application method of nematode preparation (1) Silica having a particle size of 50 to 300 μm (having a SiO 2 content of 90 wt% or more) is suspended and dispersed in water, and kushidai is used. Mix to make the water content 87.5%, 1
A nematode preparation in the form of a slurry containing 100,000 beetles per ml was prepared.

【0036】この線虫製剤に、サツマイモの苗の下部5
cmを浸漬した後、苗の下部10cmを圃場に挿入して
植え付けた。(尚、圃場は土壌消毒、施肥後、畝造り、
マルチングを夫々してあり、各苗は30cm間隔で植え
付けた。また、使用したサツマイモの品種はベニアズマ
であり、5月1日に植え付け、10月25日に収穫し
た。)尚、苗に付着した線虫量は、1株当たり約10万
頭であることがわかった。
In this nematode preparation, the lower part 5 of the sweet potato seedling was used.
After soaking cm, the lower 10 cm of the seedling was inserted into the field and planted. (In the field, after soil disinfection and fertilization, ridge construction,
Each seedling was sown at 30 cm intervals. The varieties of sweet potatoes used were venezumas, which were planted on May 1 and harvested on October 25. The amount of nematodes attached to the seedlings was found to be about 100,000 per strain.

【0037】こうして得られたサツマイモについて、コ
ガネムシ類の幼虫による被害度を調べた。
With respect to the thus obtained sweet potatoes, the degree of damage by scarab beetle larvae was examined.

【0038】(2) 前記線虫製剤を、畝造りする前
に、圃場の全面に土壌混和して、サツマイモの苗の下部
10cmを圃場に挿入して植え付けた。この際、線虫
は、(1)と同様の条件を得るべく、1株あたり10万
頭になるように混和した。このサツマイモの苗について
も(1)と同様に栽培し、収穫した。こうして得られた
サツマイモについて、コガネムシ類幼虫による被害度を
調べた。
(2) The above nematode preparation was mixed with the soil over the entire surface of the field before ridge making, and the lower 10 cm of the sweet potato seedling was inserted into the field and planted. At this time, the nematodes were mixed at 100,000 heads per strain in order to obtain the same conditions as in (1). The sweet potato seedlings were also cultivated and harvested in the same manner as (1). The sweet potatoes thus obtained were examined for damage caused by scarab beetle larvae.

【0039】(3) 従来行われている方法として、化
学農薬(日本バイエルアグロケム社製バイジット粒剤)
を苗の植え付け前に9kg/10aの割合で圃場の全面
に土壌混和して、サツマイモの苗を植え付け(5月1
日)、さらに6月、7月、8月に各1回、9kg/10
aの割合で、散布して防除しつつ栽培し、10月25日
にサツマイモを収穫し、害虫による被害度を調べた。
(3) As a conventional method, a chemical pesticide (Visit granule manufactured by Japan Bayer Agrochem Co., Ltd.)
Before planting the seedlings, the soil was mixed with the whole surface of the field at a rate of 9 kg / 10a to plant the sweet potato seedlings (May 1
Sunday), once in June, July, and August, 9 kg / 10
At a ratio of a, the plants were sprayed and cultivated while controlling, and sweet potatoes were harvested on October 25, and the degree of damage by pests was examined.

【0040】尚、被害度は、収穫した各サツマイモのコ
ガネムシ類幼虫による食害痕数を数え、以下のように食
害指数を求め、被害度を算出する。また被害いも率と
は、食害痕数が1個以上あるいもの割合(%)である。
また圃場の土壌中の温度環境は、図1のようになってい
る。また、株元とは、サツマイモの苗を植えた直下で地
下10cmの地点を指し、株間とは苗を植えた株元どう
しの中央で地下10cmの地点を指すものである。
The degree of damage is calculated by counting the number of damage marks caused by scarab beetle larvae on each harvested sweet potato and obtaining a damage index as follows. The damage rate is the percentage (%) of foods that have one or more damage marks.
The temperature environment in the soil in the field is as shown in FIG. Further, the stock source refers to a point 10 cm below the ground immediately below the seedlings of the sweet potato, and the space between the stocks refers to a point 10 cm below the center between the stocked seedlings.

【0041】 食害痕数 0 1,2 3〜6 7〜15 15〜 食害指数 0 1 3 6 9Number of eating damage scars 0 1, 2 3 to 6 7 to 15 15 to eating damage index 0 1 3 6 9

【0042】[0042]

【数1】 [Equation 1]

【0043】その結果表6のようになった。As a result, the result is shown in Table 6.

【0044】[0044]

【表6】 [Table 6]

【0045】表6から、本発明による線虫製剤を用いれ
ば、苗1株あたり10万頭のクシダイを用いることで、
従来用いられていた化学農薬よりも高い防除効果を得る
ことが出来、さらに、苗の土中埋込部分に付着させて施
用することにより、より高い防除効果を得られることが
わかる。これは、本発明の線虫製剤を菌の土中埋込部分
に付着させて施用することにより、施用したクシダイ
が、株元に集中してコガネムシ類幼虫に効果的に作用す
るため、サツマイモへの害を効果的に防除出来るものと
考えられる。
From Table 6, with the nematode preparation according to the present invention, it is possible to use 100,000 heads of kushidaii per seedling,
It can be seen that a higher control effect than the conventionally used chemical pesticides can be obtained, and further, a higher control effect can be obtained by applying the control agent by attaching it to the soil-embedded portion of the seedling. This is because the nematode formulation of the present invention is applied to the soil-embedded portion of the fungus and applied, and the applied kushidai concentrates on the root and effectively acts on the scarab beetle larvae. It is thought that it can effectively control the damage of the.

【0046】また、図1から株元は株間に比べて最高地
温、最低地温の変動幅が小さく、線虫の活動に適してい
ると云える。これは苗の植付後次第に繁茂してくるサツ
マイモの葉により太陽光が遮断されることによると考え
られる。
Further, from FIG. 1, it can be said that the strain source has a smaller fluctuation range of the maximum soil temperature and the minimum soil temperature than that of the strains and is suitable for the activity of nematodes. It is considered that this is because the sunlight is blocked by the sweet potato leaves that grow gradually after planting the seedlings.

【0047】つまり、昆虫寄生性線虫の線虫製剤を用い
れば、植物の苗の土中埋込部分に付着させ、土中に植え
付けて用いることで、線虫の活動に適した場所に施用さ
れ高い防除効果が得られることがわかった。
In other words, if the nematode preparation of insect parasitic nematode is used, it is applied to a place suitable for nematode activity by adhering it to the soil-embedded portion of the plant seedling and planting it in the soil. It was found that a high control effect was obtained.

【0048】尚、落花生のように種子を植付けて栽培す
る植物の場合には、本発明の線虫製剤を種子に付着さ
せ、土中に植付ければ同様に防除効果が得られる。ま
た、同様に、本発明の線虫製剤は昆虫寄生性線虫のみで
はなく、植物寄生性線虫を用いて雑草を除草すること
や、菌食性線虫を用いて土壌病原菌を防除することに用
いることが出来る。
In the case of a plant such as peanuts in which seeds are planted and cultivated, the same controlling effect can be obtained by attaching the nematode preparation of the present invention to the seeds and planting it in the soil. Further, similarly, the nematode preparation of the present invention is not only an insect parasitic nematode, it is possible to control weeds using a plant parasitic nematode, and to control soil pathogenic fungi using a phytophagous nematode. Can be used.

【図面の簡単な説明】[Brief description of drawings]

【図1】圃場の温度環境を示すグラフ1] Graph showing the temperature environment in a field

───────────────────────────────────────────────────── フロントページの続き (72)発明者 河杉 忠昭 茨城県竜ケ崎市向陽台5丁目6番地 株式 会社クボタ技術開発研究所つくば研究室内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadaaki Kawasugi 5-6 Koyodai, Ryugasaki-shi, Ibaraki Kubota Technology Development Laboratory Tsukuba Laboratory

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 線虫及び粒径300μm以下で水に不溶
の固形物を、水中に分散させて水分量85wt%以上の
スラリー状にしてある線虫製剤。
1. A nematode preparation in which a nematode and a water-insoluble solid having a particle size of 300 μm or less are dispersed in water to form a slurry having a water content of 85 wt% or more.
【請求項2】 前記固形物がシリカである請求項1記載
の線虫製剤。
2. The nematode preparation according to claim 1, wherein the solid substance is silica.
【請求項3】 植物の苗の土中埋込部分や種子に、請求
項1もしくは請求項2記載の線虫製剤を付着させた後、
その苗又は種子を土中に植え付ける線虫製剤の使用方
法。
3. After the nematode preparation according to claim 1 or 2 is attached to the soil-embedded portion or seeds of plant seedlings,
A method of using a nematode formulation for planting the seedling or seed in the soil.
JP5181061A 1993-07-22 1993-07-22 Nematicide preparation and method for using the same Pending JPH0733618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5181061A JPH0733618A (en) 1993-07-22 1993-07-22 Nematicide preparation and method for using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5181061A JPH0733618A (en) 1993-07-22 1993-07-22 Nematicide preparation and method for using the same

Publications (1)

Publication Number Publication Date
JPH0733618A true JPH0733618A (en) 1995-02-03

Family

ID=16094107

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5181061A Pending JPH0733618A (en) 1993-07-22 1993-07-22 Nematicide preparation and method for using the same

Country Status (1)

Country Link
JP (1) JPH0733618A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997015194A1 (en) * 1995-10-25 1997-05-01 Kubota Corporation Process for producing insect-parasitic nematode preparation and method for keeping the same
WO2004066733A1 (en) * 2003-01-29 2004-08-12 Aberdeen University Nematode containing formulation
CN103772066A (en) * 2013-12-31 2014-05-07 灵川县金田农资经营部 Biogas slurry composite pesticide for preventing and controlling stem borers
CN104365587A (en) * 2013-08-15 2015-02-25 中国中化股份有限公司 Method for preparing water emulsion carboxylic acid pesticide
JP2022046516A (en) * 2015-12-23 2022-03-23 エフ エム シー コーポレーション In situ treatment of seed in furrow

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997015194A1 (en) * 1995-10-25 1997-05-01 Kubota Corporation Process for producing insect-parasitic nematode preparation and method for keeping the same
GB2323280A (en) * 1995-10-25 1998-09-23 Kubota Kk Process for producing insect-parasitic nematode preparation and method for keeping the same
GB2323280B (en) * 1995-10-25 1999-10-13 Kubota Kk Process for producing entomopathogenic nematode preparation and method of storing the same
WO2004066733A1 (en) * 2003-01-29 2004-08-12 Aberdeen University Nematode containing formulation
CN104365587A (en) * 2013-08-15 2015-02-25 中国中化股份有限公司 Method for preparing water emulsion carboxylic acid pesticide
CN103772066A (en) * 2013-12-31 2014-05-07 灵川县金田农资经营部 Biogas slurry composite pesticide for preventing and controlling stem borers
JP2022046516A (en) * 2015-12-23 2022-03-23 エフ エム シー コーポレーション In situ treatment of seed in furrow

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