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Meteorological contribution to forecasts of cereal pest occurrence in Finland 1
Author(s) -
KURPPA S.
Publication year - 1991
Publication title -
eppo bulletin
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.327
H-Index - 36
eISSN - 1365-2338
pISSN - 0250-8052
DOI - 10.1111/j.1365-2338.1991.tb01280.x
Subject(s) - rhopalosiphum padi , aphid , pest analysis , agronomy , biology , population , aphididae , geography , environmental science , horticulture , homoptera , demography , sociology
Weather is defined as the key factor in occurrence of the two major insect pests of cereals in Finland: Rhopalosiphum padi and Sitodiplosis mosellana. Weather data can be used for producing long‐term forecasts about the annual occurrence of R. padi in Finland. The direction of air currents can also be used as a warning about the possibility of long‐distance migration of the aphid and the spread of aphid‐borne virus diseases. The daily cumulative temperature has been applied to predict the time of the appearance of S. mosellana , and also of the appearance of Oscinella frit in the field. The appearance of R. padi in cereals is regulated by the size of the population, by the physiological stage of the host plant and by the weather.