Tropical Grasslands (1986) Volume 20, 39–43

TECHNICAL NOTE: THE POTENTIAL FOR PERSISTENCE OF SAFARI KENYA WHITE CLOVER BY SEEDLING REGENERATION

H. PHILPOTTS

Agricultural Research Centre Wollongbar, N.S.W. 2480

Abstract

Seed set, soil seed reserves, germination and seedling survival of Safari Kenya white clover (Trifolium semipilosum) were followed in a grazing experiment at Wollongbar in northern New South Wales. Recordings were made over a three year period in kikuyu (Pennisetum clandestinum) and carpet grass (Axonopus affinis) pastures being grazed by cattle at two stocking rates. Seed set was affected by grazing pressure, while soil seed reserves were greater under carpet grass than kikuyu and reflected the previous year's seed set. High seedling numbers were associated with high seed reserves but tended to be less at greater pasture dry matter levels. The highest germination occurred each year at the initial germination flush in late summer. Seedling survival increased from about 10% to about 60% for germinations in February and May respectively.

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