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Tyrophagus putrescentiae: Fütterungspotenzial und Management-Strategien
Paperback
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ISBN10: 6207919882
ISBN13: 9786207919888
Publisher: Verlag Unser Wissen
Published: Aug 6 2024
Pages: 76
Weight: 0.27
Height: 0.18 Width: 6.00 Depth: 9.00
Language: German
ISBN13: 9786207919888
Publisher: Verlag Unser Wissen
Published: Aug 6 2024
Pages: 76
Weight: 0.27
Height: 0.18 Width: 6.00 Depth: 9.00
Language: German
Quantitative und qualitative Verluste durch den Befall mit Tyrophagus putrescentiae bei Weizenkörnern/Mehl wurden festgestellt. Ein signifikanter Unterschied im Gewichtsverlust bei Körnern/Mehl nach der Inokulationsperiode. Der prozentuale Gewichtsverlust war bei Mehl signifikant höher. Bei befallenen Körnern besteht eine negative Korrelation zwischen der Milbenzahl und dem Gehalt an löslichem Gesamtzucker. Signifikante Zunahme des reduzierenden Zuckers mit zunehmender Milbenbefallsdauer. Eine positive Korrelation zwischen der Milbenpopulation und dem Gehalt an reduzierenden Zuckern in den Körnern. Der Gehalt an nicht reduzierenden Zuckern und Stärke in den Körnern nahm deutlich ab. Bei befallenen Körnern und Mehl nahm der Proteingehalt zunächst nach 90 Tagen ab, danach stieg er leicht an. Weizenmehl wies im Vergleich zu den Körnern eine stärkere Abnahme des gesamten löslichen Zuckers, des nicht reduzierenden Zuckers und der Stärke sowie eine Zunahme des reduzierenden Zuckers auf. Die prozentuale Keimung der Samen und die Länge der Keimlinge zeigten den höchsten Vigour-Index bei nicht befallenen Körnern. Blattpulver von Withania somnifera, Pongamia pinnata und Azadirachta indica wurden im Biotest gegen T. putrescentiae in Weizenkörnern getestet. Höhere Konzentrationen (2 und 1 %) zeigten signifikant keine Population im Vergleich zu niedrigeren Konzentrationen (0,7, 0,6 und 0,5 %) nach der Nachbehandlung.
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