Control of potato aphids by the addition of barley strips in potato fields: A successful example of vegetation management

Kengo Nakahira, Yuji Takada, Takeshi Teramoto, Kumiko Kagoshima, Masami Takagi

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The densities of barley and potato aphids, their natural enemies and hyperparasitoids were assessed in three experimental potato fields as a case study to investigate the effectiveness of the addition of barley strips in potato fields for conservation biological control. These fields were located in a low plant-diversity landscape, but common aphid species and their natural enemies were present. The barley strips in the potato fields were found to support different species of aphids of potato, but these different sets of aphids shared a common set of natural enemies. The amount of time between peak aphid densities and peaks of their natural enemies' populations was shorter in the potato fields than in the barley strips. The levels of winged aphids in a potato monoculture field were significantly higher than those in a field with barley strips. The wingless and winged aphid populations in the field without barley strips was almost three times higher than in the fields with the barley strips, as measured at the peak aphid density. This result is one of few examples of the application of the conservation effect of greenhouse banker plants on outdoor crops.

Original languageEnglish
Pages (from-to)1155-1165
Number of pages11
JournalBiocontrol Science and Technology
Volume22
Issue number10
DOIs
Publication statusPublished - Oct 2012

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Insect Science

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