Journal of Horticulture
Open Access

Håkan Rosenqvist

Publications

• Research Article
  Study on Biological and Economic Considerations in the Control of Potato Late Blight and Potato Tuber Blight
  Author(s): Lars Wiik*, Håkan Rosenqvist and Erland Liljeroth Lars Wiik*, Håkan Rosenqvist and Erland Liljeroth
  
  An economic analysis was made of old results from 1993-1996 (22 field trials) and new results from 2010-2013 (12 field trials) obtained in field trials with different doses of fungicides to control potato late blight (PLB) and potato tuber blight (PTB) caused by Phytophthora infestans. The objective was to determine the economically optimal dose for effective control. In 1993-1996, the economic net return was highest for long intervals of about two weeks between treatments and a dose of 60% of the recommended level. The difference between the experimental treatment with the highest net return and the untreated control was 1587 € per hectare (ha-1) in susceptible cultivars, but only 531 € ha-1 in moderately resistant cultivars. In addition, the mean difference in net return between all treated susceptible and all treated moderately resistant cultivars was 874 €.. View More»
  DOI: 10.4172/2376-0354.1000226

  Abstract PDF

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