@ARTICLE{Hansen_Jens_G._Web-Blight_2003,
 author={Hansen, Jens G. and Lassen, Poul and Koppel, Matti and Valskyte, Alma and Turka, Inara and Kapsa, Józefa},
 volume={vol. 43},
 number={No 3},
 journal={Journal of Plant Protection Research},
 pages={263-273},
 howpublished={online},
 year={2003},
 publisher={Committee of Plant Protection PAS},
 publisher={Institute of Plant Protection – National Research Institute},
 abstract={The Internet based 'Web-Blight' service (http://www.web-blight.net) was initiated to provide an online warning and prognosis system for potato late blight in the countries around the Baltic Sea. In order to obtain comparable results, methods were harmonized and a set of interacting PC and Internet applications were developed for use by the project partners. Results regarding monitoring of potato late blight and evaluation of variety resistance against late blight (field tests) are presented for Estonia, Latvia, Lithuania and Poland. The use of the Internet to collect and present data was very successful, because information were "on the fly", helping farmers in their decisions about the timing of first applications and choice of fungicide type. Results show that it was possible to find early attacks as primary attacks (spots in the fields). In most cases attacks were initially found in home gardens and later in conventional fields. The growth stage at first attacks was often higher than 3 7 (BBCH) indicating that very early attacks caused by oospores in the soil was not a widespread problem. Local varieties were tested for late blight resistance in untreated field trials against four test varieties (Sava, Oleva, Danva and Kuras), Primary disease data were uploaded to Web-Blight via the Internet, and applications on the Web-Blight server calculated epidemiological variables such as delay of first symptoms and RAUDPC. Results indicated the presence of race-specific resistance in some varieties, e.g. Kuras, and that some varieties were originally misclassified according to resistance scale, e.g. Sante. The network about observation trials clearly showed that field test of variety resistance against late blight in time and space is important, taking into account the rapid evolution of Phytophthora infestans populations in Europe.},
 type={Article},
 title={Web-Blight - regional late blight monitoring and variety resistance information on Internet},
 URL={http://journals.pan.pl/Content/130893/PDF/12_PLANT_43_3_2003_Hansen_Web_Blight.pdf},
 keywords={late blight, decision support, monitoring, variety resistance, Internet, Web-Blight},
}