Some factors affecting the growth of lotononis (Lotononis bainesii)

Abstract

On the coastal lowlands of South Queensland, Lotononis bainesii responded in dry matter yield and potassium content to increasing applications of potassium. It did not respond to additions of sulphur. Higher annual yields were obtained from cutting at 8 or 12 weeks than at 4 weeks. Continued frequent cutting had no permanent adverse effect as measured by a 12-week regrowth after treatments were discontinued. Yield was closely associated with radiation received, with a minimum of about 11,200 Langleys in a 4-week period being required for measurable growth, and radiation provided the best fit of meteorological parameters with seasonal fluctuations in production. Growth did not occur in winter and was not resumed in spring until the weekly mean minimum temperature reached 9°C. The detrimental effect of dense shade on lotononis is discussed.