A cultivator is a critical tool in modern agriculture, used to prepare the soil for planting and to improve soil health.
Stephen Powles is one of the world's most highly cited plant scientists. His expertise ranges from the fundamental science on the evolution and molecular basis of herbicide resistance, through to applied agronomic research and management. He pioneered resistance science, integrating molecular to agronomic initiatives in Australia, and became the international authority on herbicide resistance. He unravelled several resistance mechanisms including sequestration and metabolism. He first documented resistance glyphosate, the world’s most important herbicide. He showed that individual resistant plants simultaneously expressed several resistance mechanisms, endowing multiple resistance to most herbicides on earth.