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weed
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weeding tillage A tractor with a wide boom sprayer applies herbicides to rows of young cereal crops in a large, green agricultural field. Two large containers of Roundup weed and grass killer with sprayer wands are displayed on a store shelf, labeled as ready-to-use glyphosate-based herbicide. Rows of genetically modified barley plants grow in an outdoor test plot in Germany, with a yellow marker labeled 3 and protective netting overhead.
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Venus's-flytrap. Venus's-flytrap (Dionaea muscipula) one of the best known of the meat-eating plants. Carnivorous plant, Venus flytrap, Venus fly trap
Plants: From Cute to Carnivorous
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weeding
Weeds being removed by hand from a parsley patch.
© delihayat/Fotolia
tillage
Farm tractor tilling row crops as a form of mechanical weed control.
© Sascha Burkard/Fotolia
Herbicide application
Spraying herbicides on cereal crops.
© Buquet Christophe/Shutterstock.com
Roundup, a glyphosate-based herbicide
Roundup, a glyphosate-based herbicide, introduced in 1974.
© sheilaf2002/stock.adobe.com
Genetically modified barley grown by researchers on a site belonging to Giessen University (Justus-Liebig-Universität) in Germany
Genetically modified crops are assessed for their impact on environmental factors...
Ralph Orlowski/Getty Images
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