Gilly, Belgium
Gilly, Belgium

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Rosemeyer V.,VIRIDAXIS
Acta Horticulturae | Year: 2014

A cocktail of six species of parasitoids has been used to control aphids on strawberry in Switzerland and France in protected and soilless crops. The cocktail was developed by Viridaxis in Belgium and labeled FresaProtect. In Switzerland, this cocktail was tested during two years under tunnel on everbearing strawberries. The results after the first year proved the efficacy and vitality of FresaProtect, but the parasitoids release started too late in the season and the aphid population could not be brought under control. The second year, with parasitoids releases starting earlier in the season, the aphid population was under control. Four chemical treatments were applied in the control plot and none was needed in the trial tunnel. In France, this cocktail of parasitoids was tested during three years in heated greenhouses on everbearing strawberries in soilless culture. The first year, a cocktail of four species of parasitoids was not enough to control the aphid present, Rhodobium porosum. The second and third year, the cocktail contained six species of parasitoids. The aphid population was finally under control when the releases started before the aphids' apparition (during the second year but not during the third year). The reasons for this difference will be discussed. FresaProtect is as easy to use as a chemical treatment and is an important tool in the IPM strategy.


Grant
Agency: European Commission | Branch: FP7 | Program: CP-TP | Phase: KBBE.2013.1.2-05 | Award Amount: 12.09M | Year: 2013

The objective of BIOCOMES is to develop 11 new biological control agents (BCAs) for key markets in European agriculture and forestry. BCAs were identified through market analysis by six manufactures of biological control products. BCAs will primarily be for use in open field crops of vegetables (3), of which 2 are also for use in protected crops, arable crops (3), fruit crops (3), and three different types of forests (2). Primary targeted pests are: gypsy moth (Lymantria dispar), pine weevil (Hylobius abietis), tomato pinworm (Tuta absoluta), white flies, aphids of fruit tree crops and Mamestra brassicae. Primary targeted pathogens are: damping-off diseases in forest nurseries, soilborne pathogens of oilseed rape and cereals, brown rot (Monilinia spp.) of stone fruit, and powdery mildew of cereals (Blumeria graminis). The economic sustainability during the entire development process will be assessed by the responsible industrial partners. The environmental sustainability will be quantified for each BCA by means of the Sustainable Process Index method. The entire developmental process for each of the 11 BCA products is guided by a consultancy partner specialized and leading in (bio) pesticide registration including risk assessments for European (bio) pesticide industries. In vitro production of entomopathogenic viruses as new innovative technique like will be developed aimed at a breakthrough in economic production. Downstream-technology and shelf life for entomopathogenic nematodes will be improved. BIOCOMES will communicate project results with all stakeholders with special attention to European IPM networks throughout the whole project duration. BIOCOMES combines the expertise of 10 industrial SME partners, 3 larger industrial partners and 14 research partners with 38% of the requested EU contribution supporting SMEs. All 11 BCA solutions will be novel IPM tools and new alternatives to replace major pesticide applications in European agriculture and forestry.


Rosemeyer V.,VIRIDAXIS | Thielemans T.,VIRIDAXIS | Gosset V.,VIRIDAXIS | Dassonville N.,VIRIDAXIS
Acta Horticulturae | Year: 2014

Viridaxis is a Belgian company which developed a new, plantless way of mass-rearing aphid parasitoids. Due to its innovative and unique technology, Viridaxis has been able to develop and produce one new parasitoid species every year. A parasitoid is a wasp able to parasitize aphids in a host-specific way. These natural enemies of aphids are used in organic or integrated pest management strategies. In order to apply the matching parasitoid against a given aphid species, the latter one has to be (a) detected in the crop and (b) subsequently identified. By the time the aphids are spotted by the grower and then identified by himself or a specialized technician, it is usually too late for gaining control over an increasing aphid population. Viridaxis developed a new concept of aphid control, based not on the species identified but on the crop treated. For each crop, the aphids expected are well known. What was needed was a product controlling the largest possible variety of aphid species expected in the crop. Starting with strawberries, Viridaxis studied the aphids attacking the cultures in various regions and over many years, and developed a unique cocktail of parasitoids species (FresaProtect) parasitizing and controlling all aphids. FresaProtect contains six different species of natural aphid enemies, and is able to control all commonly appearing aphids attacking strawberries. The fact of mixing of not only different species, but also different ages of different mummies contributes to prolonged hatching. The ready-to-use units contain an integrated feeding point which contributes to longevity and efficiency of the parasitoids. Their application in the crop is much faster than even any chemical treatment. Numerous field trial results and modeling of population dynamics data resulted in a protection scheme for junebearing strawberries in which only three releases assure constant presence of fresh parasitoid adults and hence continuous and reliable aphid control.


Dassonville N.,VIRIDAXIS
Communications in agricultural and applied biological sciences | Year: 2012

Biological control of aphids can be achieved with parasitoids. A parasitoid is a wasp able to parasitize aphids in a host-specific way. These natural enemies of aphids are used in organic or integrated pest management strategies. In order to apply the matching parasitoid against a given aphid species, the aphid has to be detected in the crop and subsequently identified. By the time the aphids are spotted by the grower and then identified by himself or a specialist, it is usually more difficult to gain control over an increasing aphid population. Viridaxis developed a new concept of aphid control, based not on the species identified but on the crop treated. There was a need for a product controlling the largest possible spectrum of aphid species susceptibly present in ornamental crops. As the first step of development, an inventory of the aphid species attacking ornamental crops was made in various regions. A unique cocktail of parasitoids species (OrnaProtect) controlling all these aphids was then developed. OrnaProtect contains six different species of natural aphid enemies, and is able to control all commonly appearing aphids attacking ornamental crops. The fact of mixing different species not only covers the entire spectrum of aphids, but also contributes to prolonged hatching. To reinforce this long lasting emergence, mummies of different ages are mixed, older mummies (stored at low temperature) emerging earlier after release than young mummies. With that prolonged hatching dynamics, a release every two weeks assures a permanent presence of fresh adult parasitoids in the crop. The ready-to-use units of OrnaProtect contain an integrated feeding point which contributes to longevity and efficiency of the parasitoids. Its application in the crop is much faster than even any chemical treatment. Here, we show the results of trials made with OrnaProtect in 2011 on several crops (Hydrangea macrophylla, Solanum jasminoides, Argyranthemum frutescens and Osteospermum ecklonis). OrnaProtect controlled the aphids in all trials. In one trial, aphids were already present at the time of first release and a localized treatment on about ten plants, compatible with beneficial insects, was applied. After that, an excellent control of the aphids was achieved by the parasitoids. In the other trials, when used in a really preventive way (no aphid at the time of first release, the aphid population was immediately controlled and all plants could be sold as first quality plant without any insecticide treatment.


Dassonville N.,VIRIDAXIS | Thielemans T.,VIRIDAXIS | Gosset V.,VIRIDAXIS | Rosemeyer V.,VIRIDAXIS
Acta Horticulturae | Year: 2015

Viridaxis is a Belgian company which developed a new, plantless way of mass-rearing aphid parasitoids. Due to its innovative and unique technology, Viridaxis has been able to produce one new selected parasitoid species every year. A parasitoid is a wasp able to parasitize aphids in a host-specific way. These natural enemies of aphids are used in organic or integrated pest management strategies. In order to apply the matching parasitoid against a given aphid species, the aphid has to be detected in the crop and subsequently identified. By the time the aphids are spotted by the grower and then identified by himself or a specialist, it is usually more difficult to gain control over an increasing aphid population. Viridaxis developed a new concept of aphid control, based not on the species identified but on the crop treated. There was a need for a product controlling the largest possible variety of aphid species susceptibly present in ornamental crops. As the first step of development, an inventory of the aphid species attacking ornamental crops was made in various regions. A unique cocktail of parasitoids species (OrnaProtect) controlling all these aphids was then designed. Here, we show the results of trials made with OrnaProtect in 2010-2011 on several crops (Hydrangea, Cyclamen, Gerbera, Begonia, etc.). OrnaProtect contains six different species of natural aphid enemies, and is able to control all commonly appearing aphids attacking ornamental crops. The fact of mixing different species not only covers the entire spectrum of aphids, but also contributes to prolonged hatching. Here, we show that it is possible to reinforce this long lasting emergence by mixing mummies of different ages, older mummies (stored at low temperature) emerging earlier after release than young mummies. We describe how the mix was optimized by studying the impact of storage at 7°C on the survival and emergence dynamics of mummies. With that prolonged hatching dynamics, a release every two weeks assures a permanent presence of fresh adult parasitoids in the crop. The ready-to-use units of OrnaProtect contain an integrated feeding point which contributes to longevity and efficiency of the parasitoids. Its application in the crop is much faster than even any chemical treatment.


VIRIDAXIS | Entity website

Contact Us VIRIDAXIS SA Rue Louis Blriot, 11 6041 Gosselies, Belgium Tel. : +32 (0) 71 48 72 25 Fax : +32 (0) 71 42 36 57


VIRIDAXIS Productie van bladluis parasitoden Viridaxis produceert bladluisparasitoden zonder dat er planten aan te pas komen. Onze producten staan bekend om hun betrouwbare, buitengewone kwaliteit en onze oplossingen zijn altijd afgestemd op de specifieke noden van de teler


VIRIDAXIS | Entity website

General terms and sales conditions Viridaxis Article 1: General Unless stated otherwise in writing and signed by both parties, these terms and conditions apply to all offers, sales and deliveries of the seller. Article 2: Prices The applicable prices are those stated in the offer submitted to the buyer ...


VIRIDAXIS | Entity website

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