▁the ▁direction ▁of ▁the ▁material ▁that ▁is ▁thrown ▁from ▁the ▁spread er . ▁All ▁broadcast ▁spread ers ▁require ▁some ▁form ▁of ▁power ▁to ▁spin ▁the ▁disk . ▁On ▁hand ▁carried ▁units , ▁a ▁hand ▁c rank ▁sp ins ▁g ears ▁to ▁turn ▁the ▁disk . ▁On ▁to w ▁behind ▁units , ▁the ▁whe els ▁spin ▁a ▁sh aft ▁that ▁turns ▁g ears ▁which , ▁in ▁turn , ▁spin ▁the ▁disk . ▁As ▁is ▁partially ▁visible ▁in ▁one ▁of ▁the ▁photos , ▁with ▁tra ctor ▁mounted ▁units , ▁a ▁mechanical ▁P . T . O . ▁sh aft ▁connected ▁to ▁the ▁tra ctor ▁and ▁controlled ▁by ▁the ▁tra ctor ▁operator , ▁sp ins ▁the ▁disk . ▁There ▁are ▁some ▁se eder / sp read ers ▁made ▁for ▁garden ▁size ▁tra ctors ▁that ▁use ▁a ▁ 1 2 ▁volt ▁motor ▁to ▁spin ▁the ▁dispers ing ▁disk ▁and ▁y aw . ▁Broadcast ▁spread ers ▁can ▁also ▁be ▁used ▁under ▁d ron es . ▁ ▁See ▁also ▁▁ ▁Man ure ▁spread er ▁ ▁Se ed ▁dr ill ▁ ▁References ▁▁ ▁Category : A gr icult ural ▁mach in ery <0x0A> </s> ▁Medal ists ▁ ▁Qual ification ▁ ▁Qual ification ▁rule : ▁qual ification ▁standard ▁ 1 6 . 9 5 m ▁or ▁at ▁least ▁best ▁ 8 ▁qualified ▁ ▁Final ▁ ▁Category : Tri ple ▁jump ▁at ▁the ▁World ▁Athletics ▁Ind oor ▁Championships ▁Tri ple ▁J ump ▁Men <0x0A> </s> ▁N ixon - Sm iley ▁Cons olid ated ▁Independent ▁School ▁District ▁is ▁a ▁public ▁school ▁district ▁based