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Offensive nématodes en Israël....

mardi 24 février 2015 - Rédaction SNP

SNP explore tous les moyens de lutte. Cette opération d’importance méritait d’être signalée. Nous avons envoyé à BB un petit message pour leur demander comment cette campagne serait suivie et les molécules dont ils ont jugé quelles étaient devenues inefficaces par adaptation du charançon. Le site de cette entreprise est à visiter Nous avons repris en fin de post leur résumé de l’IPM integrated Pest Management notion qui est maintenant dans tous les esprits. Autre point à signaler ils évoquent clairement les perspectives de la lutte autocide que nous avons plusieurs fois évoqué sans le moindre écho  !!!

Abstract : 42 Billion Worms Airlifted From Germany to Combat Israel’s Palm WeevilAbout 42 billion worms have arrived from Germany to Israel, as part of a national campaign to naturally combat the red palm weevil species, which continues to infect the country’s palm trees.

After a recent outbreak of red palm weevil infestations began throughout the country, the Kibbutz Sde Eliyahu-based company BioBee decided to bring in the nematode worms from Germany as a biologically controlled measure to eradicate the pests. The weevil’s spread throughout the country has resulted in great economic costs to local authorities and palm tree growers, the company stressed. In addition, the tiny weevils are endangering human lives as their infestations put trees in jeopardy of falling.

A species of the snout beetle, the 3.5-centimeter red palm weevil has long been identified by the Agriculture Ministry as a threatening pest to palm trees all over the country. Throughout recent years, Agriculture Ministry researchers and academics have engaged in various projects to eliminate the weevil’s presence, including the multinational Palm Protect program of the European Union.

Originating in Southeast Asia, the red palm weevil has spread throughout the Mediterranean area as well as other countries, such as China, Japan and even the United states, according to Agriculture Ministry data. The larvae of the weevil gnaw into the trunks and crowns of palm trees and cause severe damage – usually leading to the death and collapse of the tree and the destruction of entire orchards or parks.

In Israel, the red palm weevil first presented itself in palm groves north of the Dead Sea in 1999, after which they were controlled through mass trappings and chemical treatments, the Agriculture Ministry information said. Infections have occurred on and off since.

Bio Bee, a company that engages in "biologically based Integrated Pest Management" – using living organisms to control agricultural pests – has brought in the nematode worms, which are not dangerous in any way to humans or animals, the company said. As far as chemical campaigns for the weevils’ eradication are concerned, the firm stressed that the weevils have become resistant to many of the chemicals, which can also be toxic to humans or other animals.

Throughout the biologically based control method, workers place nematode worms in each of the affected palm trees, and the worms are able to identify the red palm weevil larvae and target them, information from Bio Bee said. The nematodes infect the weevils in a parasitic matter, causing their death and dying with them as a result of losing their own food source.

In addition to bringing in the nematodes, Bio Bee is also making use of special traps from Spain that mimic the smell of an infected tree. The weevils are attracted to this smell and enter the trap to drown. This method has proved successful in the Canary Islands, which also has suffered damage from the weevils, the firm said.


Biologically based Integrated Pest Management
What is Biologically based Integrated Pest Management ?

Biologically based Integrated Pest Management (IPM) is defined by the FAO (Food and Agricultural Organization of the United Nations) as : “a pest population management system that utilizes all suitable techniques in a compatible manner to reduce pest populations and maintain them at levels below those causing economic injury”.
The major incentives that led to the widespread recognition of IPM as a key plant protection tool during the last decades were : environmental pollution by agro-chemicals, resistance to pesticides by a whole multitude of pests, outbreaks of secondary pests as a result of using non-selective pesticides and disruption of pest-resistance mechanisms in plants.


Extrait Site de l’entreprise

Bio-Bee is at the forefront of implementing biologically based IPM solutions in protected and open-field cultivations. protocols have been developed for integration of Bio-Bee’s beneficial insects and mites with selective chemical pesticides under strict pest monitoring programs. These protocols are used by conventional as well as bio-organic growers of vegetables, fruits and ornamental.
IPM is strongly linked to the particular agricultural crop, its economical aspects, ecology and genetics of its different pests and their control.

The most common methods used in IPM are :
Chemical control – selective pesticides that affect the target pests, while inflicting minimum negative side effects on the environment and/or non-target organisms.
Resistant plants – to specific pests.
Cultural control – cultural methods used in a given crop to minimize pest populations and maximize populations of beneficial organisms. Typical examples of cultural control are : crop rotation, cultivation methods, surface mulching, solarization, sanitation between production cycles, trap plants for different pests, and refuge or banker plants for the beneficials.
Control of pests – interference with their physiological or behavioral functions. Sex pheromones are used for monitoring, mass trapping and mating disruption of plant pests. Pesticides, such as Insect Growth Regulators (IGRs), affect the normal development and metamorphosis of pests. Sterile Insect Technique (SIT) is another measure to control pests via their reproduction system.
Biological control – living organisms that are used to control agricultural pests. Biological control by beneficial arthropods, i.e. predatory and parasitic insects and mites.

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