Spectator 2213

[Matakari]

Need some answers to get me going with the following, please! Thanks in advance!

ACROSS:
16 Silence almost complete around pod(6): P?A???
22 Left behind baron in middle bracket(6): C?????
32 Place eggs, over six, quietly round perch(8): O?I?????
45 Spread force in waste without river(6): E?F???

[shaneystar2]

peacod
corbel
oviposit
effuse

[Lie-in King]

16a Peacod (pod) - 'peac(e)' + 'do' (complete, round)
22a Corbel (bracket) - 'l(eft)' (behind) 'b(aron)' (in) 'core' (middle)
32a Oviposit (place eggs) - 'o(ver)' + 'VI' (6, Roman) + 'p' (quiet, music) + 'o' (round) + 'sit' (perch)
45a Effuse (spread) = 'f(orce)' (in) '(r)efuse' (waste, no 'r(iver)')

[Matakari]

Thank you both, lie-in king and shanetstar2, for your comprehensive answers!