Publications for:

pest = Senna obtusifolia (weed)
crop = Lespedeza (crop)

found 2 publications:

2005

Weed control in sericea lespedeza with imazethapyr
Weed Technology (2005) 19 (3), 749-752
publishers website - pestinfo wiki

1999

Weed control in low-tannin seedling sericea lespedeza (Lespedeza cuneata)
Weed Technology (1999) 13 (2), 290-295
pestinfo wiki