Next they let oxen stomp the ground and kill weeds.

The idea was to kill weeds, I believe, rather than plou them in.

They can also kill invasive weeds that may cause environmental damage.

"I can use some spray to kill weeds in the ditches," he said.

The new chemical's ability to kill weeds was entirely accidental and not the aim of the research in either country.

That's when plants should rest, and a good time to kill weeds because they won't grow back.

Roundup is a chemical used to kill weeds in yards.

It has been used extensively to kill weeds in agriculture.

Kill weeds and other plants that grow where they are not wanted.

One general was reported to have said "To kill weeds, you must pull them up at the roots".