Majority of the weed images were collected when they were at the growth stage of two to nine leaves (BBCH 12–19). Pictures of pigweed at seedling stage, three-leaves stage, four-leaves stage, and ...
Palmer amaranth (Amaranthus palmeri S. Watson), morningglory (Ipomoea spp.), sicklepod (Senna obtusifolia L.), and large crabgrass (Digitaria sanguinalis L.) are among the most troublesome weeds ...
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