The difficulty of measuring fecundity of weeds with shatter-prone seeds can be overcome by postanthesis application of nontoxic glues to seedheads. Such glues reduced seed losses of redroot pigweed to <5% of total seed production compared with 12 to 14% for nontreated plants.
Nomenclature: Redroot pigweed, Amaranthus retroflexus L. #3 AMARE.
Additional index words: Amaranthus retroflexus, AMARE, fecundity, seed dispersal, seed production, seed shed.
Abbreviation: PVAC, polyvinyl acetate copolymer.