A chemical that will kill or inhibit the growth of weeds, a herbicide.
Chemical that kills some or all plants. Selective herbicides are effective with cereal crops because they kill all broad-leaved plants without affecting grasslike leaves. Those that kill all plants include sodium chlorate and paraquat; see also Agent Orange. The widespread use of weedkillers in agriculture has led to an increase in crop yie...Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0006306.html
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