JPH1161130A - Disease damage suppressing type soil - Google Patents

Disease damage suppressing type soil

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Publication number
JPH1161130A
JPH1161130A JP23092597A JP23092597A JPH1161130A JP H1161130 A JPH1161130 A JP H1161130A JP 23092597 A JP23092597 A JP 23092597A JP 23092597 A JP23092597 A JP 23092597A JP H1161130 A JPH1161130 A JP H1161130A
Authority
JP
Japan
Prior art keywords
soil
following formula
represented
disease
hydrogen atom
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
JP23092597A
Other languages
Japanese (ja)
Inventor
Yoshihiro Hashimoto
好弘 橋本
Teruo Takahashi
照雄 高橋
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.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon Co Ltd
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 Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP23092597A priority Critical patent/JPH1161130A/en
Publication of JPH1161130A publication Critical patent/JPH1161130A/en
Pending legal-status Critical Current

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  • Cultivation Of Plants (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain the subject soil having high resistance to soil disease damages by acclimatizing a mixture of a microorganism-decomposing type nitrogen compound with soil. SOLUTION: This soil is obtained by acclimatizing a mixture of (A) 0.001-20% microorganism-decomposing type nitrogen compound such as a urea-formaldehyde condensation product of formula I [X is H or CH2 OH; Y is NHCONH2 or OH; (n) is >=1], a polymer of formula II [R<1> is a 2-8C alkylene; (p) is 1-10; (q) is 5-100], 2-oxo-4-methyl-6-ureidohexahydropyrimidine of formula III, guanylurea of formula IV or glycoluril or the like of formula V with (B) soil having the following properties and composition comprising pH (H2 O) 3-10, pH (KCl) 3-10, 5.0-100 me/100 g base substitution volume, l 200% degree of saturation of base, 0.001-5.0 all nitrogen, 0.001-500 mg/100 g phosphoric acid in suppliable state and 0.01-500 mg nitrogen in inorganic state at 10-50 deg.C for one day to 2 years.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、病害抑止型土壌に
関する。
TECHNICAL FIELD The present invention relates to a disease-controlling soil.

【0002】[0002]

【従来の技術】従来より、畑地土壌などにおいては、病
害の発生しやすい土壌と発生しにくい土壌との間では、
微生物相には明確な違いは認められないが、植物を栽培
した場合に、その根面および根圏に蛍光性シュードモナ
ス(fluorescent Pseudomonas)やバチルス・ズブチリ
ス(Bacilus subtillis )等の拮抗微生物が定着しやす
い土壌のほうが病害の発生の頻度が低くなることが明ら
かにされている(MiltonN. Schroth (1982) Science v
ol.216, 25 p1376)。土壌により拮抗微生物の根圏定着
性に差が認められる理由はよく分かっていないが、天然
の抑止型土壌を病害多発土壌に一定量添加(客土)する
ことにより、病害を抑制する試みがなされている(J.D.
Maenzies (1959)vol.49, p648)。そして、天然の抑止型
土壌を殺菌処理した後、客土した場合には、病害抑制効
果が失われることから、土壌微生物が重要な役割を担っ
ていると考えられている。しかしながら、天然に存在す
る病害抑止型土壌は量的に限られており、広く一般に利
用することは困難である。
2. Description of the Related Art Conventionally, in field soils and the like, between soil where disease is likely to occur and soil where disease is unlikely to occur,
Although there is no clear difference in the microflora, antagonistic microorganisms such as fluorescent Pseudomonas and Bacillus subtillis tend to colonize the root surface and rhizosphere when plants are cultivated. It has been shown that the frequency of disease outbreaks is lower in soil (Milton N. Schroth (1982) Science v
216, 25 p1376). It is not clear why the difference in soil colonization of antagonistic microorganisms by soil is unknown, but attempts have been made to control the disease by adding a certain amount of natural deterrent-type soil to disease-prone soil (customer soil). (JD
Maenzies (1959) vol.49, p648). Then, if the natural deterrent type soil is sterilized and then added to the soil, the disease control effect is lost, so that soil microorganisms are considered to play an important role. However, the amount of naturally occurring disease-controlling soil is limited in quantity, and it is difficult to use it widely and generally.

【0003】[0003]

【発明が解決しようとする課題】本発明は、病害抑止型
土壌を提供することを目的とする。
SUMMARY OF THE INVENTION An object of the present invention is to provide a disease-controlling soil.

【0004】[0004]

【課題を解決するための手段】本発明者は、上記課題に
基づいて鋭意研究を行った結果、微生物分解型窒素化合
物と土壌との混合物を馴養することにより、有効な病害
抑止型土壌を作製することに成功し、本発明を完成する
に至った。すなわち、本発明は、微生物分解型窒素化合
物と土壌との混合物を馴養することにより得られた病害
抑止型土壌である。微生物分解型窒素化合物としては、
次式I:
Means for Solving the Problems As a result of diligent research based on the above-mentioned problems, the present inventor has prepared an effective disease control type soil by acclimating a mixture of a biodegradable nitrogen compound and soil. And succeeded in completing the present invention. That is, the present invention is a disease-controlling soil obtained by acclimating a mixture of a microbial decomposable nitrogen compound and soil. As the biodegradable nitrogen compounds,
The following formula I:

【0005】[0005]

【化10】 (式中、Xは水素原子又は -CH2OHを表し、Yは -NHCON
H2 又は -OHを表し、nは1以上の整数を表す。)で示
される尿素−ホルムアルデヒド縮合物、次式II:
Embedded image (Wherein, X represents a hydrogen atom or —CH 2 OH, and Y represents —NHCON
Represents H 2 or —OH, and n represents an integer of 1 or more. A urea-formaldehyde condensate represented by the following formula II:

【0006】[0006]

【化11】 (式中、R1 は炭素数2〜8のアルキレン基を表し、p
は1〜10の整数を表し、qは5〜100 の整数を表
す。)で示される重合物(3,5-ビス(メトキシメチル)
パーヒドロ-1,3,5-オキサジアジン-4-オンとグリコール
との重合物)、次式III:
Embedded image (Wherein, R 1 represents an alkylene group having 2 to 8 carbon atoms;
Represents an integer of 1 to 10, and q represents an integer of 5 to 100. ) (3,5-bis (methoxymethyl)
Polymer of perhydro-1,3,5-oxadiazin-4-one and glycol), of the following formula III:

【0007】[0007]

【化12】 で示される2-オキソ-4-メチル-6-ウレイドヘキサヒドロ
ピリミジン、次式IV:
Embedded image 2-oxo-4-methyl-6-ureidohexahydropyrimidine represented by the following formula IV:

【0008】[0008]

【化13】 で示されるグアニルウレア、次式V:Embedded image A guanylurea represented by the following formula V:

【0009】[0009]

【化14】 で示されるグリコールウリル、次式VI:Embedded image A glycoluril of the formula VI:

【0010】[0010]

【化15】 で示されるジフルフリリデントリウレア、次式VII:Embedded image A difurfurylidene triurea represented by the following formula VII:

【0011】[0011]

【化16】 (式中、R2 は-NHCONH2 、-NH2 又は水素原子を表
す。)で示されるピリミジン誘導体、次式VIII:
Embedded image (Wherein R 2 represents —NHCONH 2 , —NH 2 or a hydrogen atom), a pyrimidine derivative represented by the following formula VIII:

【0012】[0012]

【化17】 (式中、R3 は-NHCONH2 又は水素原子を表し、R4
びR4'はそれぞれ水素原子を表すか、又は共同してオキ
ソ基を表す。)で示されるイミダゾリジン誘導体、次式
IX:
Embedded image (Wherein, R 3 represents —NHCONH 2 or a hydrogen atom, and R 4 and R 4 ′ each represent a hydrogen atom or jointly represent an oxo group).
IX:

【0013】[0013]

【化18】 (式中、R5 、R6 及びR7 は-OH 又は-NH2 を表
す。)で示される1,3,5-トリアジン誘導体及び尿酸から
なる群から選ばれる少なくとも一つが挙げられる。
Embedded image (Wherein R 5 , R 6 and R 7 represent —OH or —NH 2 ), and at least one selected from the group consisting of 1,3,5-triazine derivatives and uric acid.

【0014】また、微生物分解型窒素化合物の土壌中の
含量は 0.001%〜20%であり、上記馴養は10〜50℃で1
日〜2年間行われる。さらに、微生物分解型窒素化合物
と混合するための土壌は、下記の性質及び組成を有する
ものである。
The content of the biodegradable nitrogen compound in the soil is 0.001% to 20%.
It takes place from day to two years. Further, the soil for mixing with the biodegradable nitrogen compound has the following properties and composition.

【0015】(1) pH(H2O):3〜10,pH(KCl) :3
〜10 (2) 塩基置換容量:5.0〜100me/100g (3) 塩基飽和度:1〜200% (4) 全窒素:0.001 〜5.0% (5) 全炭素:0.001 〜50% (6) 可給態リン酸:0.001 〜500mg/100g (7) 無機態窒素:0.01〜500mg/100g 以下、本発明を詳細に説明する。
(1) pH (H 2 O): 3 to 10, pH (KCl): 3
~ 10 (2) Base substitution capacity: 5.0-100me / 100g (3) Base saturation: 1-200% (4) Total nitrogen: 0.001-5.0% (5) Total carbon: 0.001-50% ( 6) Available phosphoric acid: 0.001 to 500 mg / 100 g (7) Inorganic nitrogen: 0.01 to 500 mg / 100 g Hereinafter, the present invention will be described in detail.

【0016】[0016]

【発明の実施の形態】天然に存在しない難分解性の合成
化合物を土壌などに添加した場合には、分解微生物の増
加と土壌微生物相の変化が生じる。このような土壌微生
物相の急激な変化は、不安定な土壌環境を招き、土壌病
害にに対する抵抗性の低下を招くため好ましいものでは
ない。
BEST MODE FOR CARRYING OUT THE INVENTION When a hardly decomposable synthetic compound that does not exist in nature is added to soil or the like, the number of degrading microorganisms increases and the soil microflora changes. Such a rapid change in the soil microflora is not preferable because it causes an unstable soil environment and lowers resistance to soil diseases.

【0017】一方、合成化合物を土壌に添加して一定期
間馴養すると、土壌微生物が難分解性化合物を分解する
反応速度は速くなり、微生物相の変化が少ない安定した
土壌環境ができることが知られており、微生物分解型窒
素化合物を土壌に施用した場合にも、安定した土壌環境
ができることがCDU(2-オキソ-4-メチル-6-ウレイド
ヘキサヒドロピリミジン)の分解反応において知られて
いる(山口益郎 (1976) 微生物の生態3,微生物生態研
究会編 p201)。
On the other hand, it has been known that when a synthetic compound is added to soil and acclimated for a certain period of time, the reaction rate at which soil microorganisms decompose the hardly decomposable compound is increased, and a stable soil environment with little change in microflora can be obtained. It has been known in the degradation reaction of CDU (2-oxo-4-methyl-6-ureidohexahydropyrimidine) that a stable soil environment can be formed even when a microbial decomposition type nitrogen compound is applied to soil (Yamaguchi Masuro (1976) Microbial ecology 3, Microbial ecology study group, p201).

【0018】従って、合成化合物を土壌などへ初めて施
用した場合と、連用した場合に植物の土壌病害に対する
効果が異なってくる。より安定した効果を発現させるた
めには土壌と馴養した抑止型土壌の作成が有効と考えら
れる。このような状況下、本発明者らは、微生物分解型
窒素化合物を土壌と混合し、加湿条件で馴養すること
が、上記課題の解決に有効であることを見出した。本発
明の土壌は、微生物分解型窒素化合物と土壌との混合物
を馴養することにより得られる病害抑止型土壌(以下、
抑止型土壌ともいう)である。なお、抑止型土壌とは、
例えば表1に記載の土壌伝染性の植物病害の発病を抑止
する土壌である。
Accordingly, the effect of the plant on soil diseases differs when the synthetic compound is first applied to soil or the like and when it is continuously applied. In order to achieve a more stable effect, it is considered effective to create a deterrent-type soil that has acclimated to the soil. Under such circumstances, the present inventors have found that mixing a microbial decomposable nitrogen compound with soil and acclimatizing it under humidification conditions is effective for solving the above problems. The soil of the present invention is a disease-controlling soil obtained by acclimating a mixture of a biodegradable nitrogen compound and soil (hereinafter, referred to as a soil).
It is also called deterrent type soil). In addition, deterrent type soil is
For example, it is a soil that suppresses the occurrence of soil-borne plant diseases described in Table 1.

【0019】[0019]

【表1】 [Table 1]

【0020】(1) 微生物分解型窒素化合物の調製 微生物分解型窒素化合物とは、化学合成化合物のうち微
生物によりアンモニアまたは硝酸態窒素へ変換し得る性
質を有する窒素化合物である。具体的には、次式I:
(1) Preparation of Microbial Degradable Nitrogen Compound The microbial decomposable nitrogen compound is a nitrogen compound which has the property of being able to be converted to ammonia or nitrate nitrogen by microorganisms among chemically synthesized compounds. Specifically, the following formula I:

【0021】[0021]

【化19】 (式中、Xは水素原子又は -CH2OHを表し、Yは -NHCON
H2 又は -OHを表し、nは1以上の整数を表す。)で示
される尿素−ホルムアルデヒド縮合物(例えば、ウレア
ホルム(三井東圧化学,住友化学工業)、ミクレア(日
東化学工業))、次式II:
Embedded image (Wherein, X represents a hydrogen atom or —CH 2 OH, and Y represents —NHCON
Represents H 2 or —OH, and n represents an integer of 1 or more. A) urea-formaldehyde condensate (e.g., ureaform (Mitsui Toatsu Chemicals, Sumitomo Chemical), Micrea (Nitto Chemical));

【0022】[0022]

【化20】 (式中、R1 は炭素数2〜8のアルキレン基を表し、p
は1〜10の整数を表し、qは5〜100 の整数を表
す。)で示される重合物(3,5-ビス(メトキシメチル)
パーヒドロ-1,3,5-オキサジアジン-4-オンとグリコール
との重合物)(柴 隆一(1997):生分解性を有するグ
リコールウリル−ウロン重合物の合成,機能材料,vol.
17, No.4, p13-19) 、次式III:
Embedded image (Wherein, R 1 represents an alkylene group having 2 to 8 carbon atoms;
Represents an integer of 1 to 10, and q represents an integer of 5 to 100. ) (3,5-bis (methoxymethyl)
Polymer of perhydro-1,3,5-oxadiazin-4-one and glycol) (Ryuichi Shiba (1997): Synthesis of biodegradable glycoluril-uron polymer, functional material, vol.
17, No.4, p13-19), the following formula III:

【0023】[0023]

【化21】 で示される2-オキソ-4-メチル-6-ウレイドヘキサヒドロ
ピリミジン(CDU)(チッソ) 、次式IV:
Embedded image 2-oxo-4-methyl-6-ureidohexahydropyrimidine (CDU) (nitro) represented by the following formula IV:

【0024】[0024]

【化22】 で示されるグアニルウレア(三和ケミカル)、次式V:Embedded image A guanylurea (Sanwa Chemical) represented by the following formula V:

【0025】[0025]

【化23】 で示されるグリコールウリル(グリオキサールと尿素よ
り合成:季刊 肥料 67,p13 (1994))、次式VI:
Embedded image Glycoluril (synthesized from glyoxal and urea: quarterly fertilizer 67, p13 (1994)) represented by the following formula VI:

【0026】[0026]

【化24】 で示されるジフルフリリデントリウレア(フルフラール
と尿素より合成:季刊肥料 67, p13 (1994)) 、次式VI
I:
Embedded image Difurfurylidene triurea (synthesized from furfural and urea: quarterly fertilizer 67, p13 (1994)), the following formula VI
I:

【0027】[0027]

【化25】 (式中、R2 は-NHCONH2 、-NH2 又は水素原子を表
す。)で示されるピリミジン誘導体(例えば、プソイド
ウリジン(Sigma 社), ウラシル(和光純薬工業),バ
ルビツール酸(和光純薬工業))、次式VIII:
Embedded image (Wherein R 2 represents -NHCONH 2 , -NH 2 or a hydrogen atom) (for example, pseudouridine (Sigma), uracil (Wako Pure Chemical Industries), barbituric acid (Wako Pure Chemical Industries, Ltd.) Industrial)), the following formula VIII:

【0028】[0028]

【化26】 (式中、R3 は-NHCONH2 又は水素原子を表し、R4
びR4'はそれぞれ水素原子を表すか、又は共同してオキ
ソ基を表す。)で示されるイミダゾリジン誘導体(例え
ば、アラントイン(和光純薬工業),ヒダントイン(和
光純薬工業))、次式IX:
Embedded image (Wherein, R 3 represents —NHCONH 2 or a hydrogen atom, and R 4 and R 4 ′ each represent a hydrogen atom or jointly represent an oxo group) (for example, allantoin) (Wako Pure Chemical Industries), Hydantoin (Wako Pure Chemical Industries)), Formula IX:

【0029】[0029]

【化27】 (式中、R5 、R6 及びR7 は-OH 又は-NH2 を表
す。)で示される1,3,5-トリアジン誘導体(例えば、メ
ラミン(和光純薬工業),シアヌル酸(和光純薬工
業))及び尿酸(和光純薬工業)からなる群から選ばれ
る少なくとも一つが挙げられるが、これらに限定される
ものではない。
Embedded image (Wherein, R 5 , R 6 and R 7 represent —OH or —NH 2 ) (for example, melamine (Wako Pure Chemical Industries), cyanuric acid (Wako Pure Chemical Industries, Ltd.) But at least one selected from the group consisting of uric acid (Wako Pure Chemical Industries) and uric acid (Wako Pure Chemical Industries) is not limited thereto.

【0030】(2) 土壌 土壌は、天然に存在する土壌、合成土壌等が使用でき
る。合成土壌としては、例えばゼオライト、パーライ
ト、バーミキュライト、ピートモス、粘度焼成物、天然
樹皮、珪藻土、ロックウール等が挙げられる。上記土壌
は、以下の性質及び組成を有するものである。
(2) Soil As the soil, naturally occurring soil, synthetic soil, and the like can be used. Examples of the synthetic soil include zeolite, perlite, vermiculite, peat moss, calcined product, natural bark, diatomaceous earth, rock wool, and the like. The soil has the following properties and composition.

【0031】 pH(H2O)及びpH(KCl) 生土又は風乾土に約2.5 倍の蒸留水又は1N-KCl 液を加
え(通常、土壌1g に25ml) 、攪拌又は振盪して30分以
上放置する。測定前に軽く攪拌して懸濁状態とした液に
ガラス電極を入れ、約30秒経過後にpH指示値を読みと
った結果、3〜10である。
PH (H 2 O) and pH (KCl) Add about 2.5 times distilled water or 1N-KCl solution to raw soil or air-dried soil (usually 25 ml per gram of soil), and stir or shake for 30 minutes or more. put. Before the measurement, the glass electrode was put into the liquid in a suspended state by lightly stirring, and after about 30 seconds, the pH reading was read.

【0032】塩基置換容量 セミミクロ法(土壌養分分析法,土壌養分測定法委員会
編,p34-38 ,養賢堂)により測定した結果、5.0〜100m
e/100gである。 塩基飽和度 Bray-Willhite 変法(土壌養分分析法, p41-43,前出)
により測定した結果、1〜200%である。
Base substitution capacity As measured by the semi-micro method (Soil Nutrient Analysis Method, Soil Nutrient Measurement Method Committee, p34-38, Yokendo), 5.0 to 100 m
e / 100g. Base Saturation Bray-Willhite Modified Method (Soil Nutrient Analysis Method, p41-43, supra)
Is 1 to 200%.

【0033】 全窒素 ケルダール法(土壌養分分析法, p171-176,前出) によ
り測定した結果、0.001 〜5.0%である。 全炭素 Tyurin法(土壌養分分析法, p120-124,前出) により測
定した結果、0.001 〜50%である。
As a result of measurement by the total nitrogen Kjeldahl method (soil nutrient analysis method, p171-176, supra), it is 0.001 to 5.0%. As a result of measurement by the total carbon Tyurin method (soil nutrient analysis method, p120-124, supra), it is 0.001 to 50%.

【0034】 可給態リン酸 2.5 %酢酸抽出法(土壌養分分析法, p239-245,前出)
により測定した結果、0.001 〜500mg/100gである。 無機態窒素 Bremner 法等(土壌養分分析法, p184-197,前出) によ
り測定した結果、0.01〜500mg/100gである。
Available phosphoric acid 2.5% acetic acid extraction method (Soil nutrient analysis method, p239-245, supra)
Is 0.001 to 500 mg / 100 g. As a result of measurement by the inorganic nitrogen Bremner method or the like (soil nutrient analysis method, pp. 184-197, supra), it was 0.01-500 mg / 100 g.

【0035】(3) 混合 上記化合物と土壌とを混合する。混合は、土壌中に上記
化合物の含量が 0.001%〜20%となるようにする。 (4) 馴養 馴養は、通常の温度範囲で静置または振盪して行う。ま
た、馴養は、通常、加湿条件で行われるが、土壌自身が
水分を充分保持している場合には加える必要はなく、乾
燥した土壌を用いる場合には、適当量の水を加えればよ
い。具体的には、土壌の最大容水量の0.1 〜150 %の水
分、好ましくは10〜90%の水分が含まれる条件下で培養
する。
(3) Mixing The above compound and soil are mixed. The mixing is such that the content of the compound in the soil is between 0.001% and 20%. (4) Acclimation Acclimation is performed by standing or shaking in the normal temperature range. The acclimatization is usually performed under humidification conditions. However, if the soil itself has sufficient moisture, it is not necessary to add water. If dry soil is used, an appropriate amount of water may be added. Specifically, the cultivation is carried out under the condition that the water content is 0.1 to 150% of the maximum water capacity of the soil, preferably 10 to 90%.

【0036】培養期間は、土壌及び添加した微生物分解
型窒素化合物の性質により適宜定めることができる。例
えば2日〜2年、好ましくは、7日〜6カ月である。本
発明の土壌は、種々の病害、例えば、表1に記載の病害
等を効果的に抑止することができる。
The culturing period can be appropriately determined depending on the properties of the soil and the added microbial decomposable nitrogen compound. For example, 2 days to 2 years, preferably 7 days to 6 months. The soil of the present invention can effectively control various diseases, for example, the diseases shown in Table 1.

【0037】[0037]

【実施例】以下、実施例により本発明をさらに具体的に
説明する。ただし、本発明は、これら実施例にその技術
的範囲が限定されるものではない。 1.抑止型土壌の製造 式Iで示される尿素−ホルムアルデヒド縮合物(ミクレ
ア(商品名);日東化学社製)を園芸培土(ゲンキクン
1号、コープケミカル製)に2%添加し、ポットに入れ
た。最大容水量の約60%となるように水を加え、15−30
℃の温度範囲(室温)で6ケ月間馴養した。水分は、土
壌表面が乾燥しない程度に適時添加した。
The present invention will be described more specifically with reference to the following examples. However, the technical scope of the present invention is not limited to these examples. 1. Production of Suppressive Soil A urea-formaldehyde condensate represented by the formula I (Micrea (trade name); manufactured by Nitto Kagaku Co., Ltd.) was added to horticultural soil (Genkikun No. 1, manufactured by Corp Chemical) at 2% and placed in a pot. Add water to about 60% of the maximum capacity and add 15-30
It was acclimated for 6 months in a temperature range of ℃ (room temperature). Water was added as appropriate so that the soil surface did not dry.

【0038】なお、園芸培土(ゲンキクン1号)の性質
は以下の通りである。 (1) pH(H2O):5.8 〜7.0 ,pH(KCl) :4.8 〜6.2 (2) 塩基置換容量:20〜50me/100g (3) 塩基飽和度:35〜65% (4) 全窒素:0.2 〜1.0 % (5) 全炭素:3.5 〜7.0 % (6) 可給態リン酸:25〜40mg/100g (7) 無機態窒素:15〜25mg/100g
The properties of the horticultural soil (Genkikun No. 1) are as follows. (1) pH (H 2 O): 5.8 to 7.0, pH (KCl): 4.8 to 6.2 (2) Base replacement capacity: 20 to 50 me / 100 g (3) Base saturation: 35 to 65% (4) Total nitrogen : 0.2 to 1.0% (5) Total carbon: 3.5 to 7.0% (6) Available phosphoric acid: 25 to 40mg / 100g (7) Inorganic nitrogen: 15 to 25mg / 100g

【0039】2.白菜根こぶ病に対する抑制効果 (1) 根こぶ形成方法 白菜の根こぶ、白菜の種子(郷風;根こぶ病罹病性品
種)は、長野県中信農業試験場より分譲されたものを使
用した。まず、新編土壌微生物実験法(土壌微生物研究
会編)養賢堂に記載の方法で根こぶ胞子を調製した。0.
1g 胞子懸濁液を100gの園芸培土(呉羽化学)に添加し
たものを人工汚染土壌とした。
2. Suppressive effect on Chinese cabbage root-knot disease (1) Method of root-knot formation The root-knot of Chinese cabbage and the seeds of Chinese cabbage (gofu; varieties susceptible to root-knot disease) were obtained from Nagano Prefectural Chushin Agricultural Experiment Station. First, root-knot spores were prepared by the method described in Yokendo, a new edition of the Soil Microorganism Experiment Method (edited by the Society for the Study of Soil Microorganisms). 0.
An artificially contaminated soil was obtained by adding 1 g of the spore suspension to 100 g of horticultural culture soil (Kureha Chemical).

【0040】(2) 病害抑止試験 上記人工汚染土壌の一部を本発明の土壌に置き換えたも
のを作製し、根こぶ抑制効果の検定を行った。2万分の
1アールのポット(8cm径)に100gの園芸培土を加え、
その上に、調製した人工汚染土壌または検定する土壌10
0gを加えた(表2参照)。充分灌水した後、ポットをプ
ラスチック製バットの上に並べ、バットの底面を1−2
cmほどたん水した。
(2) Disease Inhibition Test A part of the above artificially contaminated soil was replaced with the soil of the present invention, and the effect of controlling root knots was tested. Add 100g of horticultural soil to a pot of 1 / 20,000 are (8cm diameter)
On top of that, the prepared artificially contaminated soil or soil to be assayed 10
0 g was added (see Table 2). After thorough watering, the pots were placed on a plastic bat, and the bottom of the bat was
Water was about cm.

【0041】[0041]

【表2】 [Table 2]

【0042】白菜の種子3粒を播種し、昼16時間、夜8
時間、温度25℃、湿度75%、の条件で栽培し、32日目に
根部を水洗いして発病率と発病程度を調べた。各条件で
10株ずつ試験した。対照として、根こぶ胞子を接種しな
い園芸培土を用いた。発病指数は下記に従い、発病度を
算出した。
Seed three Chinese cabbage seeds, 16 hours a day, 8 nights
The plants were cultivated under the conditions of time, temperature of 25 ° C. and humidity of 75%, and on the 32nd day, the roots were washed with water and examined for disease incidence and disease severity. In each condition
Each 10 strains were tested. As a control, horticultural cultivation soil without inoculation of root-knot spores was used. The disease incidence was calculated according to the following.

【0043】 0:発病が認められない。 1:根こぶが側根に僅かに着生している(20倍のルーペ
で確認できる程度)。 2:根こぶが肉眼で明らかに確認できる。 3:根こぶが主根、側根に着生しやや肥大している。 4:根こぶの着生肥大が著しい。 発病度=(発病指数×各発病指数の株数)×100/4
×調査指数 結果を表3に示す。
0: No onset is observed. 1: Root bumps slightly settle on lateral roots (about 20 times magnifying glass). 2: The nodules are clearly visible to the naked eye. 3: The root gall is slightly enlarged on the main and lateral roots. 4: Epiphytic hyperplasia of root gall is remarkable. Degree of disease = (Disease index × number of strains with each disease index) × 100/4
× Survey index The results are shown in Table 3.

【0044】[0044]

【表3】 [Table 3]

【0045】表2の結果より明らかなように、ミクレア
を土壌に添加して根こぶ病を抑制することができるが、
抑止型土壌を作成してこれを土壌に加えることにより、
ミクレアの使用量が少なくてもそれ以上の効果を発揮す
ることが判る。また、ミクレアと抑止型土壌の併用はさ
らにその効果が高まることが示された。
As is clear from the results in Table 2, it is possible to suppress the clubroot by adding Micrea to the soil.
By creating a deterrent type soil and adding it to the soil,
It can be seen that even if the amount of Micrea used is small, the effect is more than that. In addition, it was shown that the combined use of Micrea and deterrent soil further enhanced its effect.

【0046】[0046]

【発明の効果】本発明により、土壌病害に抵抗性の高い
抑止型土壌が提供される。
According to the present invention, a deterrent type soil having high resistance to soil diseases is provided.

フロントページの続き (51)Int.Cl.6 識別記号 FI C09K 101:00 Continued on the front page (51) Int.Cl. 6 Identification code FI C09K 101: 00

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 微生物分解型窒素化合物と土壌との混合
物を馴養することにより得られた病害抑止型土壌。
A disease-controlling soil obtained by acclimating a mixture of a microbial decomposable nitrogen compound and soil.
【請求項2】 微生物分解型窒素化合物の土壌中の含量
が 0.001%〜20%である請求項1記載の病害抑止型土
壌。
2. The disease-controlling soil according to claim 1, wherein the content of the biodegradable nitrogen compound in the soil is 0.001% to 20%.
【請求項3】 微生物分解型窒素化合物が、次式I: 【化1】 (式中、Xは水素原子又は -CH2OHを表し、Yは -NHCON
H2 又は -OHを表し、nは1以上の整数を表す。)で示
される尿素−ホルムアルデヒド縮合物、次式II: 【化2】 (式中、R1 は炭素数2〜8のアルキレン基を表し、p
は1〜10の整数を表し、qは5〜100 の整数を表
す。)で示される重合物、次式III: 【化3】 で示される2-オキソ-4-メチル-6-ウレイドヘキサヒドロ
ピリミジン、次式IV: 【化4】 で示されるグアニルウレア、次式V: 【化5】 で示されるグリコールウリル、次式VI: 【化6】 で示されるジフルフリリデントリウレア、次式VII: 【化7】 (式中、Rは-NHCONH2 、-NH2 又は水素原子を表
す。)で示されるピリミジン誘導体、次式VIII: 【化8】 (式中、R3 は-NHCONH2 又は水素原子を表し、R4
びR4'はそれぞれ水素原子を表すか、又は共同してオキ
ソ基を表す。)で示されるイミダゾリジン誘導体、次式
IX: 【化9】 (式中、R5 、R6 及びR7 は-OH 又は-NH2 を表
す。)で示される1,3,5-トリアジン誘導体及び尿酸から
なる群から選ばれる少なくとも一つである請求項1記載
の病害抑止型土壌。
3. The biodegradable nitrogen compound is represented by the following formula I: (Wherein, X represents a hydrogen atom or —CH 2 OH, and Y represents —NHCON
Represents H 2 or —OH, and n represents an integer of 1 or more. A urea-formaldehyde condensate represented by the following formula II: (Wherein, R 1 represents an alkylene group having 2 to 8 carbon atoms;
Represents an integer of 1 to 10, and q represents an integer of 5 to 100. A) a polymer represented by the following formula III: 2-oxo-4-methyl-6-ureidohexahydropyrimidine represented by the following formula IV: A guanylurea represented by the following formula V: A glycoluril represented by the following formula VI: A difurfurylidene triurea represented by the following formula VII: (Wherein R 2 represents —NHCONH 2 , —NH 2 or a hydrogen atom), a pyrimidine derivative represented by the following formula VIII: (Wherein, R 3 represents —NHCONH 2 or a hydrogen atom, and R 4 and R 4 ′ each represent a hydrogen atom or jointly represent an oxo group).
IX: (Wherein R 5 , R 6 and R 7 represent —OH or —NH 2 ). The disease-controlling soil according to the above.
【請求項4】 馴養期間が10〜50℃で1日〜2年間であ
る請求項1記載の病害抑止型土壌。
4. The disease-controlling soil according to claim 1, wherein the acclimatization period is 10 to 50 ° C. for 1 day to 2 years.
【請求項5】 土壌が、下記の性質及び組成を有するも
のである請求項1記載の病害抑止型土壌。 (1) pH(H2O):3〜10,pH(KCl) :3〜10 (2) 塩基置換容量:5.0〜100me/100g (3) 塩基飽和度:1〜200% (4) 全窒素:0.001 〜5.0% (5) 全炭素:0.001 〜50% (6) 可給態リン酸:0.001 〜500mg/100g (7) 無機態窒素:0.01〜500mg/100g
5. The disease-controlling soil according to claim 1, wherein the soil has the following properties and composition. (1) pH (H 2 O): 3 to 10, pH (KCl): 3 to 10 (2) Base replacement capacity: 5.0 to 100 me / 100 g (3) Base saturation: 1 to 200% (4) Total nitrogen: 0.001 to 5.0% (5) Total carbon: 0.001 to 50% (6) Available phosphoric acid: 0.001 to 500mg / 100g (7) Inorganic nitrogen: 0.01 to 500mg / 100g
JP23092597A 1997-08-27 1997-08-27 Disease damage suppressing type soil Pending JPH1161130A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23092597A JPH1161130A (en) 1997-08-27 1997-08-27 Disease damage suppressing type soil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Publications (1)

Publication Number Publication Date
JPH1161130A true JPH1161130A (en) 1999-03-05

Family

ID=16915441

Family Applications (1)

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000072682A1 (en) * 1999-05-26 2000-12-07 Mitsubishi Rayon Co., Ltd. Soil disease controlling materials
JP2017003598A (en) * 2010-10-29 2017-01-05 ソラム インコーポレイテッド Microsampling nutrient measurement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000072682A1 (en) * 1999-05-26 2000-12-07 Mitsubishi Rayon Co., Ltd. Soil disease controlling materials
JP2017003598A (en) * 2010-10-29 2017-01-05 ソラム インコーポレイテッド Microsampling nutrient measurement

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