Abstract
The role of weather in determining an outbreak of the grain aphid Sitobion avenae is discussed in relation to its life cycle. Attention is centred on overwintering survival, and the weather during the spring migration into cereal crops and its effect on subsequent population development. The relationships between the aphid, crop, and weather are investigated using a simulation model.Conditions météorologiques et modélisation des populations de pucerons des céréales dans le Comté de Norfolk (Grande‐Bretagne)L'incidence des conditions météorologiques sur le développement de Sitoblon avenae est étudiée par référence aux différents stades évolutifs de l'espèce. Une attention particulière est accordée au taux de survivance durant la période d'hibernation et aux conditions prévalant durant la phase de migration printannière vers les cultures céréalières. La relation entre le puceron, la plante et les conditions météorologiques est exprimée à l'aide de modèles.
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