The use of Aphidius colemani and Aphidoletes aphidimyza to control damson-hop aphid (Phorodon humuli Schrank) on hop
2004
Solarska, E (Institute of Soil Science and Plant Cultivation, Pulawy (Poland)), E-mail: [email protected]
The studies on biological control of damson-hop aphid (Phorodon humuli Schrank) on Marynka cultivar, using Aphidius colemani and Aphidoletes aphidimyza, were carried out in the hop-garden localized within Hop Experimental Station at Jastkow (Poland) over the years 1998-00. The efficacy of Aphidius colemani ranged from 5 to 65 percent and was found sufficient to control damson-hop aphid in the period before flowering i.e. to the middle of July, but it was not sufficient later. The efficacy of Aphidoletes aphidimyza ranged from 50 to above 90 percent and it was sufficient in one of the examined vegetation seasons. High air temperature and lack of rainfall reduced efficacy of both species, but especially that of Aphidius colemani
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