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DE874971C - Destruction of insect brood on water surfaces - Google Patents

Destruction of insect brood on water surfaces

Info

Publication number
DE874971C
DE874971C DEP39823A DEP0039823A DE874971C DE 874971 C DE874971 C DE 874971C DE P39823 A DEP39823 A DE P39823A DE P0039823 A DEP0039823 A DE P0039823A DE 874971 C DE874971 C DE 874971C
Authority
DE
Germany
Prior art keywords
water
brood
destruction
bark
insect
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.)
Expired
Application number
DEP39823A
Other languages
German (de)
Inventor
Gerhard Beisinger
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.)
Glanzit Ges Pfeiffer & Co M B
Original Assignee
Glanzit Ges Pfeiffer & Co M B
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 Glanzit Ges Pfeiffer & Co M B filed Critical Glanzit Ges Pfeiffer & Co M B
Priority to DEP39823A priority Critical patent/DE874971C/en
Application granted granted Critical
Publication of DE874971C publication Critical patent/DE874971C/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/08Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Agronomy & Crop Science (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Description

Zur Vernichtung von Stechmückenbrut, etwa der Culex-, Aedes-, Anophelesarten od. dgl., hat man bisher ölhaltige oder Mineralstaubmittel verwendet, die auch noch durch Sonderbehandlung insekticid gemacht werden konnten. Sie werden auf die Gewässer so aufgebracht, daß auf der Wasseroberfläche ein dünner Film entsteht, durch den die Atmung der Brut unterbunden wird und diese zum Absterben kommt. Diese bekannten Mittel sind zum Teil verhältnismäßig teuer, so daß die Kosten für die Behandlung großer Wasserflächen nicht tragbar erscheinen.To destroy brood of mosquitoes, such as the Culex, Aedes, Anopheles species or the like, one has So far, oily or mineral dusts have been used, which are also insecticid through special treatment could be made. They are applied to the water in such a way that on the water surface a thin film is created through which the brood's breathing is prevented and the brood to the Dying is coming. These known means are relatively expensive in some cases, so that the costs seem unsustainable for the treatment of large bodies of water.

Die Erfindung sieht einen neuen Grundstoff vor, der in großen Massen als Abfall gewonnen werden kann und alle Eigenschaften besitzt, die an ein solches Mittel gestellt werden müssen. Man hat gefunden, daß die Rinde der Korkeiche und die Borke der Kiefern und verwandter Bäume infolge ihrer Eigenart und ihres Gehaltes an Ölen, wie etwa Teeröl, feinstgemahlen, filmbildende Eigenschäften hat und wasserabstoßend ist. Dieses Borkenmehl ist so leicht, daß es schwimmt und infolge seiner Eigenschaften einen geschlossenen Deckfilm auf der Wasserfläche erzeugt. Bisher war der Borkenrindenabfall der Bäume dieser Art wertlos, so daß diese Rinde als Grundstoff außerordentlich billig und in ausreichenden Mengen günstig zu beschaffen ist. Sie weist auch noch weitere wesentliche Vorteile auf. Bei der Verwendung ölhaltiger Mittel bildet die Ölschicht oft Anlaß zu unangenehmster Verschmutzung der Gewässer. Insbesondere werden die Wasserpflanzen geschädigt und die Uferränder verunreinigt. Bei Verwendung von Stinkölen läßt sich übler Geruch nicht ver-The invention provides a new raw material which can be obtained in large quantities as waste can and has all the properties that must be placed on such a means. One has found that the bark of the cork oak and the bark of pine and allied trees result their characteristics and their content of oils, such as tar oil, finely ground, film-forming properties has and is water-repellent. This bark meal is so light that it floats and due to its properties creates a closed covering film on the water surface. So far it was The bark waste from trees of this kind is worthless, so that this bark as a raw material is extraordinary can be obtained cheaply and cheaply in sufficient quantities. She also points out more significant advantages. When using oily agents, the oil layer often gives rise to most unpleasant pollution of the waters. In particular, the aquatic plants are damaged and pollute the banks' edges. When using stink oils, the bad smell cannot be

meiden, das Wasser ist zum Gießen im Garten unbrauchbar. Bei der Verwendung von Borkenmehl fallen solche Beanstandungen weg. Eine Sonderbehandlung zur Erzeugung ' wässerabweisender Eigenschaften ist bei Borke nicht erforderlich. Weiter ist es, falls erwünscht, möglich, dem Borkenmehl insektieide Wirkstoffe beizumischen, wobei dann durch das beobachtete Breitlaufen des Borkenmehls auf der Wasseroberfläche auch dessenavoid, the water cannot be used for watering in the garden. There are no such complaints when using bark flour. A special treatment to produce 'water-repellent Properties is not required with Borke. It is also possible, if desired, to use the Mix in bark flour insecticidal active ingredients, and then by the observed spreading of the Bark flour on the surface of the water, too

ίο rasche Verteilung und Wirkung gegeben ist.ίο there is rapid distribution and effect.

Vollkommen trockene Borke von alten Kiefern • (Pinus silvestris) und anderen harzhaltigen Bäumen wird fein vermählen und mit einem staubförmigen Insekticid, etwa ι bis.3%, gemischt.Completely dry bark from old pine • (Pinus silvestris) and other resinous trees is finely ground and mixed with a dusty insecticide, about ι to 3%.

Beim Ausbringen des Mittels auf die Wasseroberfläche bildet sich ein vollkommen geschlossener Film, der infolge des geringen spezifischen Gewichtes und der hydrophoben Natur des Korks der Borke von der Oberflächenspannung des Wassers getragen wird und tagelang vorhalt, ohne durchzurieseln. Auf den Quadratmeter Wasseroberfläche rechnet man etwa 5 g Borkenmehl. Der Film verändert die an der Wasseroberfläche herrschenden physikalischen Bedingungen und erschwert damit die Lebensbedingungen der Larven und Puppen der verschiedenen Stechmückenarten (Culex, Aedes und;Anopheles), die sich dort zum Atemholen aufhalten. Durch Abschluß von der Atemluft gehen die Tiere nach 2 bis 5 Stunden an Atemnot ein, soweit sie nicht schon vorher durch die Einwirkung des Kontaktinsekticids zum Absterben gebracht wurden.When the agent is applied to the surface of the water, a completely closed film is formed which, due to the low specific weight and the hydrophobic nature of the cork, is carried by the surface tension of the water and lasts for days without trickling through. Approximately 5 g of bark flour are calculated on the square meter of water surface. The film changes the physical conditions prevailing on the surface of the water and thus complicates the living conditions of the larvae and pupae of the various mosquito species (Culex, Aedes and ; Anopheles) who stay there to take a breath. When the animals are shut off from breathing air, they become short of breath after 2 to 5 hours, unless they have already been caused to die by the action of the contact insecticide.

Man kann die Rinde aller Bäume verwenden, die gleiche oder ähnliche Eigenschaften aufweisen.You can use the bark of any tree that has the same or similar properties.

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: Verwendung von feingemahlener Borkenrinde von ölhaltigen Bäumen, gegebenenfalls im Gemisch mit insekticiden Wirkstoffen, als Streumittel zur Erzeugung einer der Vernichtung von Insekten auf Wasserflächen dienenden filmbildenden Schicht.Use of finely ground bark from oleaginous trees, possibly mixed with insecticidal active ingredients, as a scattering agent to produce one of the destruction film-forming layer used by insects on water surfaces. Angezogene Druckschriften:Referred publications: Ni k 1 a s : »Tropenhygienische Schriftenreihe«, Heft' 10, S. 24 bis 39.Ni k 1 a s: »Tropical Hygienic Series«, Issue '10, pp. 24 to 39. © 5101 4.53© 5101 4.53
DEP39823A 1949-04-14 1949-04-14 Destruction of insect brood on water surfaces Expired DE874971C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP39823A DE874971C (en) 1949-04-14 1949-04-14 Destruction of insect brood on water surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP39823A DE874971C (en) 1949-04-14 1949-04-14 Destruction of insect brood on water surfaces

Publications (1)

Publication Number Publication Date
DE874971C true DE874971C (en) 1953-04-27

Family

ID=7376745

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP39823A Expired DE874971C (en) 1949-04-14 1949-04-14 Destruction of insect brood on water surfaces

Country Status (1)

Country Link
DE (1) DE874971C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152683B (en) * 1959-11-06 1963-08-14 Dehydag Gmbh Process for distributing active substances on liquid surfaces

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152683B (en) * 1959-11-06 1963-08-14 Dehydag Gmbh Process for distributing active substances on liquid surfaces

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