Recent surveys of commercial pasture paddocks have shown more than 90% have inadequate legume nodulation. Without adequate nodulation, legumes respond poorly to applied phosphorus restricting pasture production and therefore feed supply to livestock can be significantly restricted. Additionally, poorly nodulated legumes will not contribute to building the soil nitrogen pool. Herbicides and their residues have been implicated in contributing to poor nodulation. Investigation of the role of herbicides and other farm management tactics in impacting nodulation is required to enable better pasture management systems to be developed
Murdoch University Centre for Rhizobium Studies
Meat and Livestock Australia