Studies on the population dynamics of cabbage moth in the Kisalfold region of North-West Hungary
1991
Abraham, G. (Somogy Megyei Novenyegeszsegugyi es Talajved. All. (Hungary))
The population dynamics of the cabbage moth (Namestra brassica) was examined based on light trap between 1972 and 1989. Changes in mass proportions can be utilised in forecasting. The tendency of the changes in proportions can be expressed by the generation coefficient and the extent of the change by the population coefficient. The correlation between the population and generation coefficient in loose in the first generation and close in the second. When using variance analysis to study the connection between the number of the moth trapped and the meteorological data, it was found that the individual number in the first generation was closely correlated to the number of sunshine hours and the temperature. An opposite situation was observed for the second generation, where there was a loose correlation between humidity and individual number. The differences in the individual numbers of cabbage moth at various experimental sites can be explained by differences in soil types. Meadow alluvival soil provides more favourable conditions for the multiplication of the pest than marsh of meadow chernozem
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