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Ertrag von Sojabohnen auf degradiertem Technosol aus dem Tantalabbau
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ISBN10: 6630539443
ISBN13: 9786630539448
Publisher: Verlag Unser Wissen
Published: Oct 1 2026
Pages: 76
Weight: 0.25
Height: 0.18 Width: 6.00 Depth: 9.00
Language: German
ISBN13: 9786630539448
Publisher: Verlag Unser Wissen
Published: Oct 1 2026
Pages: 76
Weight: 0.25
Height: 0.18 Width: 6.00 Depth: 9.00
Language: German
Weite Teile des Bergbaugebiets Gatumba in Ruanda sind von Technosolen (Pegmatit oder Pegmatit-Boden-Gemische) bedeckt, die durch den Coltan-Abbau entstanden sind. Diese Substrate weisen einen geringen Gehalt an pflanzenverwertbaren Nährstoffen auf und sind wenig ertragreich. Aufgrund der Knappheit an landwirtschaftlichen Flächen in Ruanda wird fast das gesamte verfügbare Land landwirtschaftlich genutzt. Die vorliegende Studie wurde durchgeführt, um den Einfluss von Tithonia und anorganischen Düngemitteln auf die Nährstoffaufnahme und die Biomasseproduktion von Sojabohnen zu bewerten, die auf Gatumba-Böden angebaut wurden, die von früheren Coltan-Abbauaktivitäten betroffen sind. Es wurden ein Gewächshaus-Topfversuch und ein Feldversuch durchgeführt, wobei sowohl reines Pegmatit-Substrat als auch eine Mischung aus Pegmatit und Lixisol Bt verwendet wurden. Die Biomasse der Sojabohnen, der Kornertrag sowie der Gesamtstickstoffgehalt (N), P und K bei der Ernte gemessen, während der Gesamtstickstoff (N), der verfügbare Phosphor (P), Kalium (K) und Kohlenstoff (C) im Boden vor und nach den Versuchen analysiert wurden. Die Ergebnisse zeigen, dass die Trockenmasse, der Kornertrag sowie die N-, P- und K-Akkumulation der Sojabohne auf Pegmatit höher waren als auf der Mischung. Die Technosol-Materialien zeigten gro es landwirtschaftliches Potenzial, das positiv genutzt werden könnte, wenn ihre Speicherfähigkeit für Nährstoffe und Wasser verbessert wird.
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