Effects of Mechanical and Chemical Methods of Bush Control

Effects of Mechanical and Chemical Methods of Bush Control

on Degraded Rangelands

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Most parts of arid and semi arid savanna rangelands are degraded and degradation poses a risk to the ecosystem integrity of these fragile dryland environments. One of the most visible forms of savanna degradation is bush encroachment, a term that describes the invasion of whole landscapes by few of several indigenous woody species, which flourish opportunistically under inappropriate management of rangelands. Bush encroachment results in an imbalance in the ratio of grasses to bush, a decrease in biodiversity and a decrease in the carrying capacity, which cause severe economic losses to ranche...