BETTER ADAPTATION OF PLANTS 363 
This additional example has been given to encourage others to 
plan similar rotational grazing systems based on the growth 
requirements of the key species. Intensive grazing at appropriate 
periods, followed by resting, will assuredly result in more efficient 
use of the range resource. 
Conclusions 
Everyone interested in the development of higher producing 
grasslands and the more efficient utilization and conversion of 
the feed grown should read C. P. McMeekan’s talk presented at 
a plenary session of the Sixth International Grassland Congress 
(49). He presented the philosophy underlying the interdependence 
of grassland and livestock. He concluded: ‘“‘The most effective 
use of grassland frequently involves the temporary abuse of both 
pasture and animals, and [I] make a plea for the clear recognition 
of this by those interested primarily in the pasture itself. Grass- 
land improvers must also never forget that pasture is useless un- 
less usable. I believe the recognition of these two facts is essential 
if further development of our grasslands is to result in healthy, 
productive swards in terms of animal use.” 
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