Idk if it matters but this is for crowder peas

http://extension.uga.edu/publications/detail.cfm?number=C1038 http://ir4.rutgers.edu/FoodUse/PerfData/3765.pdf  https://sites.aces.edu/group/commhort/blog/Lists/Posts/Post.aspx?ID=285. As you note there really are not much available help in the form of insecticides. Even those are only available with permits. I have have some luck with esfenvalerate or malathion applied on young plants before pod formation.