So ur beans and corn are planted & coming in great i hope!!! & I sure hope u put down pre-emergents!!!!!
If so- beans - ur next spraying could look like this.... 2 pre-emergents + post emergent...
1) 40-45 oz of metolachlor with safener (lil higher than label & works as well as s-metolachlor if u bump up 30% higher rate than s-Metolachlor) - this metolachlor is cheap & has safener...
https://www.ruralking.com/me-too-lachlor-ii
2) fomesafen. Used according to label - if at least 30 days before late summer plots- I’ve had no issues.
https://www.ruralking.com/fomasate
If u run LIBERTY beans, add ur glufosinate obviously. I’d suggest the above fomesafen for a lot of reasons including velvet leaf!! I’d add clethodim & crop oil for better grass killing power as well if u able. Lot of other additives & angles but trying to keep simple. If go with round-up, go at higher rate & make sure the fomesafen is there or other options to address PW, WH, etc. horrid weeds!!!
CORN: Hope u got pre’s down again!!! If u need 2nd
Spray 1) Atrazine if RUP, if not, simazine is actually just fine & can buy anywhere. Mesotrione post & pre emergent is another great tool & option depending on ur 1st spray 2) again, above metolachlor II. If corn is at “correct stage” (read label) - 2,4-d at labeled rates. & ur post that corn has tolerance. IF your corn is tall & fighting off last bit of weed pressure - post emergents (your tolerance trait to corn &/or 2,4-d) alone will likely be sufficient.
Can u manage with post emergents alone? Possibly but u Better be extremely disciplined on timely spraying, spraying at proper weed heights & using several post emergents herbicide categories to tackle weeds that can be extremely hard to deal with or problematic.
Good luck on your corn & bean Plantings!