Contains 50:50 mix of Aphidius colemani and Aphidius ervi. The mixtures reduce the need for accurate pest species identification and are suitable for preventative use against a range of aphid species, particularly in mixed cropping situations. Most crops can be infested with aphids. Damage is caused in three ways: sucking plant sap when feeding, excretion of honeydew leading to sooty mould and some species can transmit plant viruses leading to distortion and disfigured plant growth. Biological control with parasites, predators and fungal pathogens are available depending on crop and environmental conditions. There are a large number of aphid species and identification can be important when parasitic wasps are to be used. Depending on the species there can be alternate plant hosts. Winged forms develop under conditions of high density to migrate to alternate hosts. Resistance to some insecticides is a serious issue with some species.
Activity / Control
The mix controls round bodied aphid species such as Myzus persicae (peach-potato aphid) and Aphis gossypii (melon cotton aphid) and larger elliptical shaped species including Macrosiphum euphorbiae (potato aphid) and Aulacorthum solani (glasshouse potato aphid). The adult wasp inserts its egg into the aphid, a parasite larva develops killing the aphid, producing a characteristic goldenbrown papery 'mummy' with Aphidius and Praon species, and black 'mummy' with Aphelinus species. An adult parasitic wasp later emerges through a round hole on the mummified aphid. The adult wasps also feed as a predator on aphids, killing one or more each day.
Use at the first sign of aphids or better, as an early season preventative.
1 wasp / 1 m2.
Aphid parasite mix, ideal for ornamental producers and professional nurseries, as well as hobby gardeners. Mix contains 2 parasites (Aphidius colemani and Aphidius ervi) in one pack providing multiple control of all important aphids.