Control of piano grass.
AbstractThemeda arguens known locally as Piano or Christmas grass, has proved a troublesome pasture weed and injurious to grazing cattle. Experiments aimed at its control are described. Economic considerations render the use of herbicides impracticable and climatic considerations preclude rotational cropping.
Biological control by competitive grasses is attempted and experimental results suggest that Amphilophis and Seymour grass, which are both varieties of Andropogon pertusus[Bothriochloa pertusa], and Finger grass, Digitaria swazilandensis, may prove effective over an extended period. Bahama, Molasses, Blue Panic, Rhodes, Guatemala, Guinea and Elephant grasses proved unsuitable for the purpose.
Further investigation into the palatability and nutritional value of the suggested competitors is indicated.-Author's summary.