Elevation of shoot‐apices of two ecotypes of Themeda triandra on the Transvaal Highveld

Abstract

In a series of investigations from 1965 to 1970 on the Transvaal Highveld it was found that trie elevation of shoot apices of two ecotypes of Themeda triandra was affected by season, ecotype and treatment. The absence of defoliation increased the susceptibility of the ecotypes to defoliation, whereas the shorter the defoliation the greater the subsequent resistance to grazing. The most important finding was that general application of earlier research findings from Natal was not possible in this case.

UITTREKSEL

In ‘n reeks proewe vanaf 1965 tot 1970 op die Transvaalse Hoëveld is daar gevind dat seisoen, ekotipe en behandeling die verheffing van skeut punte van twee Themeda triandra‐ekotipes beïnvloed. Waar die betrokke ekotipes nie ontblaar word nie, word dit gaandeweg gevoelig vir beweiding, terwyl dit heelwat minder gevoelig is waar daar gereeld ont blaar word. Die belangrikste bevinding was dat vroeëre narvorsingsresultate uit Natal nie algemeen toegepas kon word nie.