| the ipm wheat model--results of a three-year study in north rhine-westphalia, lower saxony and schleswig-holstein. | under the primary utilisation of phytosanitary production factors such as selection of variety, crop rotation and n fertilisation according to plant requirements, the ipm wheat model comprises the elements diagnosis (qualitative = type of pathogen, quantitative = disease severity), scientifically grounded treatment thresholds which, as critical values in pathogen development, can be applied to define the optimum time of fungicide application, and pathogen-specific effective fungicides and applic ... | 2003 | 15151283 |