fection , ▁brown ▁and ▁grey ish - green ▁water ▁so aked ▁sp ots ▁appear ▁on ▁the ▁fruit . ▁These ▁sp ots ▁develop ▁into ▁les ions ▁that ▁res emble ▁the ▁mark ings ▁of ▁a ▁b ull ' s ▁eye ▁with ▁altern ating ▁dark ▁and ▁light ▁brown ▁concent ric ▁rings . ▁These ▁are ▁very ▁smooth ▁les ions , ▁bare ly ▁raised , ▁unlike ▁the ▁rough ▁les ions ▁found ▁in ▁late ▁bl ight ▁( Ph yt oph th ora ▁inf est ans ), ▁which ▁is ▁a ▁similar ▁path ogen . ▁Finally , ▁a ▁white ▁fung al - like ▁growth ▁may ▁appear ▁within ▁the ▁les ion . ▁While ▁fruit ▁rot ▁is ▁the ▁most ▁common ▁sympt om , ▁d amp ing ▁off ▁and ▁stem ▁can k ers ▁are ▁possible . ▁ ▁The ▁disease ▁does ▁not ▁affect ▁the ▁fol i age ▁of ▁the ▁plant , ▁which ▁further ▁helps ▁separate ▁it ▁from ▁late ▁bl ight ▁. ▁ ▁D ise ase ▁Cy cle ▁▁ ▁Buck ey e ▁rot ▁of ▁tom ato ▁is ▁soil ▁bor ne ▁and ▁therefore ▁affect s ▁fruit ▁lying ▁on , ▁or ▁close ▁to , ▁the ▁soil . ▁ ▁While ▁it ▁can ▁sex ually ▁reproduce ▁through ▁the ▁production ▁of ▁o os por es , ▁its ▁primary ▁form ▁of ▁reprodu ction ▁is ▁by ▁a sex ually ▁producing ▁sp or ang ia . ▁ ▁These ▁sp or ang ia ▁are ▁found ▁at ▁the ▁tips ▁of ▁sp or ang iop hor es ▁that ▁emer ge ▁through ▁the ▁st om ates . ▁Sp or ang ia ▁release ▁zo os por es ▁which ▁require