Publications for:

pest = Amaranthus retroflexus (weed)
crop = Cowpea and relatives (Vigna)

found 2 publications:

2020

Weed management in azuki bean with postemergence herbicides
American Journal of Plant Sciences (2020) 11 (8), 1467-1477
publishers website - pestinfo wiki

1997

Collard-cowpea intercrop response to nitrogen fertilization, redroot pigweed density, and collard harvest frequency
HortScience (1997) 32 (5), 850-853
pestinfo wiki