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Damage effects of cereal aphids in wheat

By: Contributor(s): Material type: ArticleArticleLanguage: En Publication details: 1981Subject(s): DDC classification:
  • 82-800633
 In: Netherlands Journal of Plant Pathology v. 87, no. 6, p. 217-23282-800633Summary: Laboratory and field studies on aphid damage in wheat are described. Both direct and indirect effects of aphids on the behaviour of the crop were studied. In the laboratory a clear effect of honeydew and yeasts on photosynthesis was foumd. This effect could not be demonstrated under field conditions, since even at yield loss levels of 700 kg/ha the size of this effect may be undetectable with crop enclosures reaching an accuracy of 10%. The effect of honeydew on ageing, measured in the laboratory trials was also found in the field and may form a major cause of the yield losses found in the field. Yield losses under field conditions
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21 ref.; Summaries (En, Nl)

Laboratory and field studies on aphid damage in wheat are described. Both direct and indirect effects of aphids on the behaviour of the crop were studied. In the laboratory a clear effect of honeydew and yeasts on photosynthesis was foumd. This effect could not be demonstrated under field conditions, since even at yield loss levels of 700 kg/ha the size of this effect may be undetectable with crop enclosures reaching an accuracy of 10%. The effect of honeydew on ageing, measured in the laboratory trials was also found in the field and may form a major cause of the yield losses found in the field. Yield losses under field conditions

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