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Verbreitungsmuster von Unkrautarten in Maiskulturen in Mardan, Pakistan

Verbreitungsmuster von Unkrautarten in Maiskulturen in Mardan, Pakistan


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About the Book

Unkraut sind unerwünschte Pflanzenarten, die in Kulturpflanzen wachsen. Wie andere Kulturpflanzen auch, ist Mais mit dem Problem der Konkurrenz durch Unkraut konfrontiert. In kleineren landwirtschaftlichen Betrieben wurden aufgrund von Unkraut Verluste von bis zu 70 % der Maisernte gemeldet. Die Zusammensetzung und Häufigkeit von Unkraut wird durch eine Reihe von Umweltvariablen sowie durch landwirtschaftliche Praktiken in einem Ökosystem beeinflusst. Die vorliegende Studie wurde konzipiert, um den Einfluss von Umweltvariablen auf die Zusammensetzung, Häufigkeit, Verbreitung und Bildung verschiedener Unkrautgemeinschaften im Distrikt Mardan in Pakistan zu untersuchen. Für jedes Feld wurden phytosoziologische Merkmale wie Dichte, Häufigkeit, relative Dichte, relative Häufigkeit und Importanzwerte gemessen. Die Daten zur An- und Abwesenheit von 29 Arten und 65 Feldern wurden mit Hilfe von Cluster- und Zwei-Wege-Clusteranalysen mit PC-ORD Version 5 analysiert, was zu vier Hauptunkrautgemeinschaften führte. Die CANOCO-Software Version 4.5 wurde verwendet, um die Umweltgradienten von Unkräutern durch kanonische Korrespondenzanalysen (CCA) zu bewerten. Die Ergebnisse zeigten, dass unter allen Umweltvariablen die stärksten Variablen CaCO3, hohe Phosphorkonzentration und höhere elektrische Leitfähigkeit waren.


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Product Details
  • ISBN-13: 9786208971700
  • Publisher: Verlag Unser Wissen
  • Publisher Imprint: Verlag Unser Wissen
  • Height: 229 mm
  • No of Pages: 72
  • Spine Width: 4 mm
  • Width: 152 mm
  • ISBN-10: 6208971705
  • Publisher Date: 18 Jun 2025
  • Binding: Paperback
  • Language: German
  • Returnable: N
  • Weight: 159 gr


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