go ol ihe rniseoneeprrnn rhar n is agrreuliore looi individual and rnarker gardenrngl iliai wrll aerually provide rhe lurure lood we eal la eornrnon lallaeyl. lohn leavoris eanrnaies ion lhe basis olgardensl ihai we could rernr-n perhaps we ol land in he own purposes, Nix ihal l rhink lhai we will gel ihere rhis nexr decade, bui we can siarl, and our ehrldren ean ronllnne ihe proress, and so develop new luresir and wilderness lo explore. A reduenon or ihe «alaglal deserrs ihal we have ealled agrieulrure rs well overdue, as is a eoneornrrani reduelion rn rhe lwrn disasrors ol newspapers and paekagrng derived lrnni aneienr loresrs 8,2 SOIL AND HEALTH As long as we live, we will be drseoveruig new rhrngs aboui ilie sorl—planl-anunal relalioriship. Soils harbour and rransier borh diseases and anllbioi-les plans will iake up lrorn ihe soil inany rnodern ani is use lpenieillih, sulla drugsl, and we nirghl ihen ingesr lhern ai eonceniraied levels Animals will relarn residual anliblories lrhererore new and resisranl rlrains oi disease organisrnsl, and will eonlarri residual hormones and bioeides. Moms and anlrnals oiay eonoenirare, or nullilv, environrnenuil polluianls Mosi or rhese pollrrranis are in laei eoneeniraied by borh planis and animals, bur rlie degree ro whlch ihrs happens vanes berween speoes. Bnlh dangers and bene s arise lroin our lood Narural levels or soil ani ones may susrarn us, and nalural resisiance lo drsease is in greal parl Hausa rnriied lo us via lood, ll is eeriarnly ihe ease wrih viiarnins and iraee eleoienls rhai ihey oiarniarn lhe Iundxon ol rnany rneiabolro proeesses, in rninure bui neeessirousarnounis When people lived as inhabiianis or regions las niany snll dol lhey adapied w local soils, planis, and nubrrronal levels or «hey dred our Today, we bring rn global lood in global rnarkers, and so risk lhe global spread ol ”agrioolngenlr' liar-mused) diseases. Like he horns walfidink, ihe house garden represenls a luau'red and loealised risk uriderour eonhol, and ol llrile risk ro sorrery generally, l-ublre warer supplies and eornrneee-ial loods are a dillerenr nialier, disiribuied as ihey are lhroughoui inany rnodern soeieries in soil rehabiliulion. we are loreed ioslari Wlth wlisl is now iliere Only rarely have we a soil eonrairiing all rhe nuirieno a plani may need lo grow, Mosi gardeners and larrners who havz developed susiarruble sorl syrlerns allow 3—4 years lor building a garden, and 545 years io reoiore a dovasraled sorl landseape. This applies only m lhe physfi] mlondon ol soils and lo ihe developmern ol approprrale plani sysierns. There are lar rnoae lengihy proeeaoas ro beunderlaken where pasl ehernioal polluiion has oeeurred. 184 THE POLLUTION or 50|L5 AND Whlbus Orchards, sugarcane areas, pineapple, canon, iobaeeo rrop, and banana planiarions lio narne iusi a law welleknown easesl have had surh an orgv ol rnrneral addrrrves, arsenieals, Aldrln, DDT, eopper sails, and dlaxlnb applied lhai even aller "5—20 years or no eherriieal use, a ser ol apple orchards in Wesi Ausrralia produees unsale levels ol Aldnn and Dieldnn in ihe eggs ol heerange ehiekens Ahernprs lo gm prawn. rn ponds on sueh lands have lailed on ilie basis ol residual Dieldrln levels in soils When we eorrie m assess lhe ioral environrnenrsl damage eaused by persisreni misuse ol ehernieals, we will land oiany larrris las well as bores and mad lhai vvlll need lo be pur inio lor nonelood produrlion las ruel lorears or srrueiural rirnberl lor decades ro eorne. nie sarne oiay already hold rrue lor soils mxmn mil rn ol roadways where leaded peirol is used land where mimic oars pass dallyl. We laee loekeup periods ol lens or ar rirnes ihousands ol years lor ilie ndlmllves blowing on, or leaking horn, wasre dnrnps and srraiegie slookplles of yelloweake Uranruni llowa, Kennreky, Rusara and ihe UK or France). or lrorn "accidenls" sueh as ihose oerirrring araiornie power planis, or horn iheir wasies Cadrniurn and manlum»pollulad soils ol :Mmitally» based and heavlly‘lerllllsed rnarkel gardens, wasie dnrnps ol lndushy, and rhe longeierni elleeis ol nilrareepolluied sorl walrus ran be added lo ihose liars ol alreadyelangeruus areas, Even now, applied heallh levels would elose down niany lnrrns and laeiories, and (as awareness risesl rhis will be done in he near lurure by publie dernand The eosis ol rehabilrranon las lor aeid rarnl already lar ouisrrip m: prolirs ol degradanon. and may in laei be prohibilive lor areas rhai were developed lor larnirng lroni isso lo (he presenr lihe age or agrieulrural polluironl Large unanrriies ol lead, arsenir, copper, and persisreni broades are applred on rnosi apple orehards Dara is available lor sorne rnelals lscos «i. Winier w, Copper and lead slay al or near rhe surlaee ol soils in high eoneenlralions Arsenre rnay also slay ar rhrs level in clay soils, or wash down lo subsoil (5040 m deepl in aeid sands. Leaching lrorn elays or mganic prohles ulna ernl is unlikely, alihough phosphare applieanon may dislodge arsenre in deeper levels in paahue planrs uruier sueh orehards, copper ran ieaeli so pprn lpoisonous in sheep), assess eopper in rhe dier eauses ioriaern e iaundiee lliver porsonrngl and blood in rhe urire. lreople rn Ausnahn deserls olien show high eopper blood levels and blood in urine.l Molybdenum. zine and sulphur inay buuer eopper upiake in sheep ai leasi; uprake by plarrir increases wirh rernperarure and aeidiry llor lead and eopperl, as lor vegerables Arsenic upiake rs nor relared roaridrry; silver beer lbwiss ehnrdl led wirh nirrogen lose high arsenie eoneenlradons, bur rnay iheri be unsurrable lor ehildren due lo high nliiaie levels, Several subsranees have now polluied soils. There