FR2925825A1 - Protecting leaves of vegetable crops, such as Solanum and Amaranth, against mites, such as bulb scale mites and spider mite, comprises applying a mosquito net impregnated with acaricide (dicofol) on the leafy vegetables - Google Patents

Protecting leaves of vegetable crops, such as Solanum and Amaranth, against mites, such as bulb scale mites and spider mite, comprises applying a mosquito net impregnated with acaricide (dicofol) on the leafy vegetables Download PDF

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Publication number
FR2925825A1
FR2925825A1 FR0760423A FR0760423A FR2925825A1 FR 2925825 A1 FR2925825 A1 FR 2925825A1 FR 0760423 A FR0760423 A FR 0760423A FR 0760423 A FR0760423 A FR 0760423A FR 2925825 A1 FR2925825 A1 FR 2925825A1
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FR
France
Prior art keywords
mites
acaricide
net
solanum
dicofol
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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
FR0760423A
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French (fr)
Inventor
Thibaud Martin
Komlan Francoise Assogba
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INST NAT DES RECH S AGRICOLES
CT DE COOPERATION INTERNAT EN
Centre de Cooperation Internationalel en Recherche Agronomique pour le Development CIRAD
Institut de Recherche pour le Developpement IRD
Original Assignee
INST NAT DES RECH S AGRICOLES
CT DE COOPERATION INTERNAT EN
Centre de Cooperation Internationalel en Recherche Agronomique pour le Development CIRAD
Institut de Recherche pour le Developpement IRD
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Application filed by INST NAT DES RECH S AGRICOLES, CT DE COOPERATION INTERNAT EN, Centre de Cooperation Internationalel en Recherche Agronomique pour le Development CIRAD, Institut de Recherche pour le Developpement IRD filed Critical INST NAT DES RECH S AGRICOLES
Priority to FR0760423A priority Critical patent/FR2925825A1/en
Priority to FR0851179A priority patent/FR2925824B1/en
Publication of FR2925825A1 publication Critical patent/FR2925825A1/en
Pending legal-status Critical Current

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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
    • A01N25/34Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
    • 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
    • A01N31/00Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
    • A01N31/04Oxygen or sulfur attached to an aliphatic side-chain of a carbocyclic ring system
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

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

Abstract

Process for protecting leaves of vegetable crops, such as Solanumand Amaranth, against mites, such as bulb scale mites and spider mite, comprises applying a mosquito net impregnated with an acaricide on the leafy vegetables, where the application of mosquito net is carried out every N night, where N is 2-4. ACTIVITY : Acaricide. MECHANISM OF ACTION : None given.

Description

1 La présente invention concerne un procédé de protection des cultures de légumes feuilles, tels que Solanum et Amaranthe, contre les acariens, tels que les tarsonèmes et les tétranyques, qui comprend l'application sur les légumes feuilles, d'un filet moustiquaire imprégné d'un acaricide. L'adoption de ce type de protection a permis de remédier aux inconvénients inhérents aux techniques classiques de traitement foliaire, à savoir la présence d'insecticide résiduaire dans les feuilles et la pollution du sol par suite du ruissellement de l'insecticide depuis le feuillage sur le sol. L'approche consistant dans l'utilisation d'un filet imprégné d'un acaricide souffre toutefois d'un inconvénient majeur. En effet, jusqu'à ce jour, l'application de ce filet sur les plants est effectuée toutes les nuits, ce qui entraîne un endommagement des feuilles terminales (ou apicales) qui sont d'une grande fragilité ; la conséquence en est une altération du développement des plants et donc une baisse sensible de la production des légumes feuilles. Le but de la présente invention est donc de pallier cet inconvénient et à cet effet, il est proposé un procédé tel que défini dans le premier paragraphe de cette description, qui est caractérisé en ce que l'application du filet moustiquaire est effectué toutes les N nuits, N étant un nombre entier de 2 à 4. Il a été observé de manière surprenante que non seulement une réduction, par rapport à l'état antérieur de la technique, de la fréquence d'application du filet sur les plants permettait d'éviter la destruction des feuilles apicales de ces plants et donc d'augmenter la production des légumes feuilles, mais encore conduisait à une protection des cultures du même ordre que celle obtenue par une application toutes les nuits. De plus, grâce à cette fréquence réduite d'application, un arrosage et un entretien réguliers sont possibles. Sans être liés par une quelconque théorie, les inventeurs pensent que l'explication la plus probable du mode d'action du filet est la suivante : le filet, une fois en position d'application, est en contact avec les feuilles apicales des 2 plants, qui se trouvent ainsi chargées en acaricide et donc protégées ; par ailleurs, les acariens ont une préférence pour les feuilles apicales, de sorte qu'ils se concentrent sur ces feuilles et les utilisent pour coloniser les plants voisins ; ce faisant, ils se trouvent intoxiqués, ce dernier effet restant observable même avec une fréquence réduite d'application du filet, d'une nuit sur deux, trois ou quatre. La présente invention est particulièrement utile pour des légumes feuilles du type Solanum macrocarpum ou Amaranthus hybridus, dont le ravageur majeur est l'acarien Polyphagotarsonemus latus. Le filet moustiquaire mis en oeuvre dans l'invention, présente de préférence 20 à 70 mailles par m2, notamment 40 mailles/m2. The present invention relates to a method for protecting leafy vegetable crops, such as Solanum and Amaranthe, against mites, such as mites and mites, which includes the application on leafy vegetables, of a mosquito net impregnated with an acaricide. The adoption of this type of protection has made it possible to overcome the drawbacks inherent in conventional foliar treatment techniques, namely the presence of residual insecticide in the leaves and soil pollution as a result of insecticide runoff from the foliage onto the foliage. floor. The approach of using a net impregnated with a miticide, however, suffers from a major drawback. Indeed, until today, the application of this net on the plants is performed every night, which causes damage to the terminal leaves (or apicals) which are of great fragility; the consequence is an alteration of the development of the plants and therefore a significant decrease in the production of leafy vegetables. The object of the present invention is therefore to overcome this drawback and for this purpose, it is proposed a method as defined in the first paragraph of this description, which is characterized in that the application of the net is made every N N is an integer of 2 to 4. Surprisingly, it has been observed that not only a reduction from the prior art in the frequency of application of the net to plants allows avoid the destruction of the apical leaves of these plants and thus increase the production of leafy vegetables, but still lead to a crop protection of the same order as that obtained by an application every night. In addition, thanks to this reduced frequency of application, regular watering and maintenance are possible. Without being bound by any theory, the inventors think that the most probable explanation of the net's mode of action is as follows: the net, once in a position of application, is in contact with the apical leaves of the 2 plants which are thus loaded with acaricide and therefore protected; on the other hand, mites have a preference for apical leaves, so they concentrate on these leaves and use them to colonize neighboring plants; in doing so, they are intoxicated, the latter effect remaining observable even with a reduced frequency of application of the net, one night out of two, three or four. The present invention is particularly useful for leafy vegetables of the type Solanum macrocarpum or Amaranthus hybridus, the major pest of which is the mite Polyphagotarsonemus latus. The mosquito net used in the invention preferably has 20 to 70 mesh per square meter, in particular 40 mesh / m2.

Ce filet est de préférence réalisé en polyéthylène ou polyester. Il est avantageusement imprégné de 20 à 70 mg (matière active) d'acaricide par m2, notamment de 50 mg (matière active) d'acaricide par m2, l'acaricide étant en particulier le dicofol. L'imprégnation du filet par l'acaricide peut être effectuée de la manière suivante. On détermine tout d'abord la capacité d'absorption du filet, laquelle correspond à la quantité d'eau absorbée par ce dernier. Le filet est ensuite introduit dans une bassine comprenant un mélange eau + formulation d'acaricide, ce mélange et sa quantité étant choisis en fonction de la surface du filet, du nombre de mailles de celui-ci, de la dose d'acaricide désirée par unité de surface du filet et de la concentration en acaricide de ladite formulation. Le filet est ensuite mis à sécher. This net is preferably made of polyethylene or polyester. It is advantageously impregnated with 20 to 70 mg (active ingredient) of acaricide per m2, in particular of 50 mg (active ingredient) of acaricide per m2, the acaricide being in particular dicofol. The impregnation of the net with the acaricide can be carried out as follows. Firstly, the net's absorption capacity, which corresponds to the amount of water absorbed by the net, is determined. The net is then introduced into a basin comprising a mixture of water + acaricide formulation, this mixture and its quantity being chosen as a function of the surface of the net, the number of meshes thereof, the dose of acaricide desired by net area unit and acaricide concentration of said formulation. The net is then left to dry.

Ainsi par exemple, pour un filet d'une surface de 14m2 et comportant environ 50 mailles par m2, une dose désirée de dicofol de 50 mg de matière active par m2 et une concentration de la formulation de dicofol de 45 g/litre, la quantité de formulation à mettre en oeuvre est de 15,6 ml et la quantité d'eau à mettre en oeuvre est de 750,9 ml.For example, for a net of a surface area of 14 m 2 and having approximately 50 mesh per m 2, a desired dose of dicofol of 50 mg of active ingredient per m 2 and a concentration of the dicofol formulation of 45 g / liter, the amount of The formulation to be used is 15.6 ml and the quantity of water to be used is 750.9 ml.

3 A titre d'illustration de l'invention, on décrit ci-après une expérimentation menée sur des plants de Solanum macrocarpum protégés contre tarsonèmes et tétranyques par deux traitements différents, à savoir application à raison d'une nuit sur trois d'un filet moustiquaire à 40 mailles/cm2, en polyester et imprégné de dicofol à raison de 50 mg de matière active par m2 et application toutes les nuits du filet susmentionné. Les résultats obtenus sont comme suit : Traitement Nombre de Nombre de Nombre de Première tarsonèmes' sur tétranyques' sur feuilles coupe3 10 apicales ide feuilles feuilles/parcelle feuilles/parcelle acariosées2 acariosées traitée traitée par rapport (CI : 95%) (CI : 95 ~) (CI : 95 ~) à 300 feuilles (CI : 95 ~) Application du filet 3, 0 a 0, 0 a 0, 0 a 0, 0 a 1 nuit sur 3 Application 8,0 a 0,0 a 1,1 a 0,0 a du filet toutes les nuits Aucun 697,5 b 17,5 b 56,0 b 12,0 b 10 Dans le tableau ci-dessus, les indices 1, 2 et 3 ont les significations suivantes : 1 : moyenne de trois données cumulées pour 10 feuilles observées une fois par semaine (p<0,001) 2 : moyenne de trois données cumulées pour 150 feuilles 15 observées une fois par semaine (p<0,001) 3 : calculé à partir du nombre de feuilles endommagées par les acariens, à la première coupe (p=0,002). Les résultats ci-dessus montrent que le traitement consistant dans l'application du filet une nuit sur trois est 20 aussi efficace, voire plus efficace (notamment sur les 4 tarsonèmes), que le traitement par application du même filet toutes les nuits. Grâce à la présente invention, on dispose aujourd'hui d'un procédé de protection des cultures de légumes feuilles particulièrement aisé à mettre en oeuvre, avec une manipulation réduite du filet moustiquaire acaricide, sans danger pour l'opérateur et l'absence de pesticide résiduaire dans les plantes et l'environnement, et qui en raison de l'utilisation limitée du filet à une nuit sur 2, 3 ou 4, permet sans aucun problème l'arrosage et l'entretien des cultures en cours de traitement. As an illustration of the invention, an experiment carried out on solanum macrocarpum plants protected against tarsonemas and spider mites by two different treatments, namely one in three applications of a net, is described below. mosquito net 40 mesh / cm2, made of polyester and impregnated with dicofol at a rate of 50 mg of active ingredient per m2 and application every night of the aforementioned net. The results obtained are as follows: Treatment Number of Number of First mites on mites on leaf cut 3 apical leaves leaves / parcel leaves / parcel acarinae 2 acarina treated treated relative (CI: 95%) (CI: 95 ~ (CI: 95 ~) at 300 sheets (CI: 95 ~) Application of the net 3, 0 to 0, 0 to 0, 0 to 0, 0 to 1 night out of 3 Application 8.0 to 0.0 to 1, 1 to 0.0 a of the net every night None 697.5 b 17.5 b 56.0 b 12.0 b 10 In the table above, the indices 1, 2 and 3 have the following meanings: 1: average of three cumulative data for 10 leaves observed once a week (p <0.001) 2: average of three cumulative data for 150 sheets observed once a week (p <0.001) 3: calculated from the number of leaves damaged by mites at the first cut (p = 0.002). The above results show that the treatment consisting in the application of the net one night out of three is as effective or even more effective (especially on the four tarsonemes), than the treatment by applying the same net every night. Thanks to the present invention, there is now a method for protecting leafy vegetable crops that are particularly easy to implement, with reduced handling of the insecticide-treated net, without danger for the operator and the absence of pesticides. waste in plants and the environment, and because of the limited use of the net to one night out of 2, 3 or 4, allows without any problem the watering and the maintenance of the cultures in the course of treatment.

Claims (5)

REVENDICATIONS 1. Procédé de protection des cultures de légumes feuilles, tels que Solanum et Amaranthe, contre les acariens, tels que les tarsonèmes et les tétranyques, qui comprend l'application sur les légumes feuilles, d'un filet moustiquaire imprégné d'un acaricide, caractérisé en ce que l'application du filet moustiquaire est effectué toutes les N nuits, N étant un nombre entier de 2 à 4. 1. Method for protecting leafy vegetable crops, such as Solanum and Amaranthe, against mites, such as mites and mites, which includes the application on leafy vegetables, of a mosquito net impregnated with an acaricide, characterized in that the application of the net is performed every N nights, N being an integer of 2 to 4. 2. Procédé selon la revendication 1, caractérisé en ce que les légumes feuilles sont choisis parmi Solanum macrocarpum et Amaranthus hybridus. 2. Method according to claim 1, characterized in that the leafy vegetables are selected from Solanum macrocarpum and Amaranthus hybridus. 3. Procédé selon la revendication 1 ou 2, caractérisé en ce que les acariens sont Polyphagotarsonemus latus. 3. Method according to claim 1 or 2, characterized in that the mites are Polyphagotarsonemus latus. 4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le filet moustiquaire présente 20 à 70 mailles par m2, notamment 40 mailles par m2 et en ce qu'il est imprégné de 20 à 70 mg (matière active) d'acaricide par m2, notamment de 50 mg (matière active) d'acaricide par m2. 4. Method according to any one of claims 1 to 3, characterized in that the net net has 20 to 70 meshes per m2, in particular 40 meshes per m2 and in that it is impregnated with 20 to 70 mg (active ingredient ) of acaricide per m2, in particular of 50 mg (active ingredient) of acaricide per m2. 5. Procédé selon l'une quelconque des revendications 20 précédentes, caractérisé en ce que l'acaricide est le dicofol. 5. Method according to any one of the preceding claims, characterized in that the acaricide is dicofol.
FR0760423A 2007-12-28 2007-12-28 Protecting leaves of vegetable crops, such as Solanum and Amaranth, against mites, such as bulb scale mites and spider mite, comprises applying a mosquito net impregnated with acaricide (dicofol) on the leafy vegetables Pending FR2925825A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0760423A FR2925825A1 (en) 2007-12-28 2007-12-28 Protecting leaves of vegetable crops, such as Solanum and Amaranth, against mites, such as bulb scale mites and spider mite, comprises applying a mosquito net impregnated with acaricide (dicofol) on the leafy vegetables
FR0851179A FR2925824B1 (en) 2007-12-28 2008-02-25 PROCESS FOR PROTECTING CROPS AGAINST MITES.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0760423A FR2925825A1 (en) 2007-12-28 2007-12-28 Protecting leaves of vegetable crops, such as Solanum and Amaranth, against mites, such as bulb scale mites and spider mite, comprises applying a mosquito net impregnated with acaricide (dicofol) on the leafy vegetables

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FR2925825A1 true FR2925825A1 (en) 2009-07-03

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FR0760423A Pending FR2925825A1 (en) 2007-12-28 2007-12-28 Protecting leaves of vegetable crops, such as Solanum and Amaranth, against mites, such as bulb scale mites and spider mite, comprises applying a mosquito net impregnated with acaricide (dicofol) on the leafy vegetables
FR0851179A Expired - Fee Related FR2925824B1 (en) 2007-12-28 2008-02-25 PROCESS FOR PROTECTING CROPS AGAINST MITES.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012038460A3 (en) * 2010-09-23 2012-09-07 Basf Se Method for protecting living plants against harmful insects using a sheet-like structure

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663502A1 (en) * 1990-06-20 1991-12-27 Decaix Roland Device for protecting plants against insects

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663502A1 (en) * 1990-06-20 1991-12-27 Decaix Roland Device for protecting plants against insects

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
MARTIN T ET AL: "Efficacy of mosquito netting for sustainable small holders' cabbage production in Africa", JOURNAL OF ECONOMIC ENTOMOLOGY, vol. 99, no. 2, April 2006 (2006-04-01), pages 450 - 454, XP002498140, ISSN: 0022-0493 *
MOHAPATRA L N: "Chemical control of yellow mite, Polyphagotarsonemus latus Banks, (Acarina; Tarsonemidae) on jute", INDIAN JOURNAL OF PLANT PROTECTION, vol. 24, no. 1-2, 1996, pages 15 - 17, XP009106591, ISSN: 0253-4355 *
TALEKAR, N.S. AND LIN, M.Y: "How to grow safer leafy vegetables in nethouses and net tunnels", INTERENATIONAL COOPERATORS' GUIDE - AVRDC PUB # 03-558, May 2003 (2003-05-01), XP002498143, Retrieved from the Internet <URL:http://www.avrdc.org/pub_ipm.html> [retrieved on 20081001] *
TOMLIN C (ED): "The e-Pesticide Manual 2003 (Thirteenth Edition) Version 3.0, Dicofol (248)", THE E-PESTICIDE MANUAL (THIRTEENTH EDITION), BRITISH CROP PROTECTION COUNCIL, 1 January 2003 (2003-01-01), XP002498142 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012038460A3 (en) * 2010-09-23 2012-09-07 Basf Se Method for protecting living plants against harmful insects using a sheet-like structure

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Publication number Publication date
FR2925824B1 (en) 2010-03-05
FR2925824A1 (en) 2009-07-03

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