Fewer Aphids in Organic Crop Fields, Study Finds
ScienceDaily (July 13, 2011) — Farmers who spray insecticides against aphids as a preventative measure only achieve a short-term effect with this method. In the long term, their fields will end up with even more aphids than untreated fields. This has been reported by researchers at the Biocenter of the University of Würzburg in the scientific journal PLoS ONE.
What’s the status of the biodiversity in differently managed triticale fields? This is what the biologists at the Department of Animal Ecology & Tropical Biology wanted to find out. Triticale is a cross between wheat and rye. The cultivation of this crop is on the rise across the globe, because it delivers good yields even in poor soil conditions.
When comparing conventionally managed crop fields, which were either sprayed with insecticides or were left untreated, Jochen Krauss, Iris Gallenberger and Ingolf Steffan-Dewenter made a discovery, which should catch the attention of every farmer: “According to our results, the preventative application of insecticides against aphids does not produce any advantages even though it consumes a lot of time and money,” Jochen Krauss sums up.
to read more, go to: http://www.sciencedaily.com/releases/2011/07/110713101944.htm