Workshop held at the farm Avontuur
Kalahari Harpagophytum Project
March 6-10, 2000
Summary and Photos: Dr. E. Schneider, Salus-Haus
Map showing the position of the farm Avontuur in the Kalahari.
Severe downpours made the Kalahari becoming green. The Scmidtiagrass was not so high in living memory. It comes up to the cattle's abdomen.
Comparing photo of March 1991 with March 2000 shows the extraordinary rain in 2000.
Ecological field methods 1:
This method allows to determine the photosynthetic activity and hence the vigour of the plant in a non-destructive way.
Ecological field methods 3:
Determination of soil shear strength which is a good measure of soil moisture.
Ecological field methods 4:
Propagation experiments of Harpagophytum with planted secondary tubers. There is little success. Only 2 out of 100 planted secondary tubers showed growth of roots.
Cultivation by the use of a "Rain-Harvesting-System"
Devil's Claw was planted in vegetation free stripes. The successful implementation of the method is well documented by the extraordinary well developed green mass of the 18months old plants of Harpagophytum procumbens.
The community Madibeng in the sampling area.
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