TheImprovement ofTropical and Subtropical Rangelands

GRAZING MANAG8MENT 125
FIGURE 6-4 ADkol. and Hbu caul. 011 predomiDan'17 IfUlland rail" of
Kenya and Tanlania. (J. O'Rourk.)
be approximated with relatively few data points on the two curves
and continually adjusted as additional data become available. This
procedure provides a flexible and practical procedure for determining
stocking rates in response to changing forage suppli•.
This relationship indicates that individual animal gains are maximized
at the lowest stocking rates. .A. inteDllity ofstocking increases,
the gain of individuals declines while the yield per hectare increues.
At the point of optimum productivity, the individual animal gains
are still high and the yield per hectare is near, but not at, maximum.
Further increases in stocking r.ult in deterioration of the range,
which eventually decreues the ability of the range to produce. .A.
grazing continues in the overgrued portion of the raDge, productivity
declines per hectare. If this r.ultl in significant BOil 1088, the
original productivity may never be regained.
GRAZING MANAGEMENT PLANNING
Consideration of the overall management plan, including both
range improvements and the gruing scheme, is critical. All practices
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