caa a22 4500 469042141 CHVBK 20180323132814.0 cr unu---uuuuu 170328e19920301xx s 000 0 eng 10.1007/BF01974492 doi (NATIONALLICENCE)springer-10.1007/BF01974492 Schöber Bärbel Federal Biological Research Center for Agriculture and Forestry, Institute for Plant Protection of Field Crops and Grassland, Messeweg 11/12, 3300, Braunschweig, Germany aut Control of late blight, Phytophthora infestans, in integrated crop management [Elektronische Daten] [Bärbel Schöber] Integrated plant protection is described as a combination of methods in which the use of chemical plant protection substances is limited to the essential minimum. To fulfil this demand in respect of late blight control it is necessary to avoid all possibilities which influence the start of an epidemic development. The epidemic normally starts from infected tubers, so sanitary precautions are the first point. This means not having cull piles around the store houses and presprouting the tubers to discard heavily infected seed lots. The next step is the use of resistant varieties which allow the reduction of fungicide applications. This point should be sustained by a fertilization which does not raise the susceptibility and by a good warning system for late blight like ‘Negativ Prognosis'. The active ingredients of the fungicides should be changed between applications to avoid forming resistance of the fungus. This means that after a systemic fungicide a contact fungicide should follow. After the theoretical explications the results of a field trial are given which has been running on a farm near Braunschweig. Koninklijke Nederlandse Planteziektenkundige Vereniging, 1992 resistance nationallicence forecasting nationallicence fungicides nationallicence Netherlands Journal of Plant Pathology Kluwer Academic Publishers 98(1992-03-01), 251-256 0028-2944 98<251 1992 98 10658 https://doi.org/10.1007/BF01974492 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01974492 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Schöber Bärbel Federal Biological Research Center for Agriculture and Forestry, Institute for Plant Protection of Field Crops and Grassland, Messeweg 11/12, 3300, Braunschweig, Germany aut NATIONALLICENCE 773 0- Netherlands Journal of Plant Pathology Kluwer Academic Publishers 98(1992-03-01), 251-256 0028-2944 98<251 1992 98 10658 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer