Wintergerste – Bekämpfungsrichtwert erreicht?
Schwarze Punkte in Wintergerste; Foto C. Erbe, LWA Karlsruhe
Anmerkungen C. Erbe:
Nicht jeder im Sonnenlicht durchschimmernde schwarze Punkt auf dem Gerstenblatt ist eine Blattlaus. Kontrollieren Sie genau, manchmal ist es nur Erde.
Foto rechter Teil: Potentiell gefährdeter Schlag neben abgeernteten Maisacker.
Wichtige Informationen aus dem Kreis Ludwigsburg vom 24.10.2024
„Bitte kontrollieren Sie ihre Wintergerstenbestände auf Blattläuse,“ so ein klarer Apell des Ludwigsburger „Beratungsseptetts“ vom Fachbereich Landwirtschaft.
Ab 20 % besiedelter Pflanzen ist der Bekämpfungsrichtwert für Blattläuse als Virusvektoren erreicht. Eine Applikation mit einem Pyrethroid ist ab dem 2-Blattstadium der Gerste sinnvoll.
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