1980
DOI: 10.1111/j.1439-0418.1980.tb03475.x
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Zur Modellierung von Befall‐Schadens‐Relationen wichtiger Schadinsekten des Winterweizens

Abstract: Model experiments on infestation‐damage relations using insect pests of winter wheat For the realisation of the desired measures of plant protection is the knowledge about the processes which lead to insect damage in crops essential At examples of the wheat bulb fly (Leptohylemyia coarctata Fall.), the cereal leaf beetles (Oulema spp.) and the English grain aphid (Macrosiphum avenae [Fabr.]) on one side and the winter wheat on other side should analysed such infestation‐damage‐relations on the basis of model e… Show more

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Cited by 10 publications
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“…cp= Cost of the increasing rate of yield. Yield loss: calculate according to the formula of Wetzel et al (1980). yr = ( yc -yt /yc ) × 100 Where: yr = Loss in the yield due to pests.…”
Section: Economic Threshold Level (Etl) Calculationmentioning
confidence: 99%
“…cp= Cost of the increasing rate of yield. Yield loss: calculate according to the formula of Wetzel et al (1980). yr = ( yc -yt /yc ) × 100 Where: yr = Loss in the yield due to pests.…”
Section: Economic Threshold Level (Etl) Calculationmentioning
confidence: 99%