ORIGINAL ARTICLE
The use of Aphidius colemani and Aphidoletes aphidimyza to control damson-hop aphid (Phorodon humuli Schrank) on hop
 
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Institute of Soil Science and Plant Cultivation Czartoryskich 8, 24-100 Puławy, Poland
CORRESPONDING AUTHOR
Ewa Solarska
Institute of Soil Science and Plant Cultivation Czartoryskich 8, 24-100 Puławy, Poland
 
Journal of Plant Protection Research 2004;44(2):85–90
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ABSTRACT
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 localised within Hop Experimental Station at Jastków over the years 1998–2000. The efficacy of Aphidius colemani ranged from 5% to 65% 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% 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.
CONFLICT OF INTEREST
The authors have declared that no conflict of interests exist.
 
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