E 5 501]. AND WATER ELEMENTS ol irie ma known elemenis, nnly some are mmmnnly deali nrih in rheliieramreensnilsand waier Soil iisell is pnduminanily eornposed ul aluminium, silien, iron, and on eeriain shell, sand, nr limesmne areasi ealrium Only inmeral rue depnsris have lavgi‘ duaniines nl uiher elemems The mudiliei lurm ol ihe perrodie inlale is inven in ilie eenrreluld ul ihe riiluur seriinn and a mere cxlznsn'r annolalian on speeilie elemenis is given in Table 8.] ii is esseniial ihni designers in any lield have a basie knunledge ul nuinenls, poisons, and ldlerable or essennnl levels nl irare elemenis in mod warer, and rhr- hiiili Cm‘lmnmem The henlili ol planls, anrmals, and ilie enrrrdnmeni ol sorls and uuildings are all dependent on ihe balame ol elemenis, radinarirve suueianees, radraiidn generally, and waier qualiiv. ol pariieular eaneei-ii in maul limes is ihe level or radrriariiyes in elays, uneks, palms, and nine. and unih ine emissions lrom domes-i appliances (TV, microwave ovens» and mlcmwave iadiairon lioru rv iransmission and pnwer lines 1-nu she annoaanans in male ad cm'cr a range a! iopies, ineludrng shore eornrnenls nn human henllh ln ihis ease we are using ihe penndir iaule noi as an aid in ehernisiry bu| as a g de lo undersranding ine rule nl ihe elemenis in soil, water, planis and anrmal iissue, and nuiriridn. nie eulrrursedrng and ilie dens mi ilie penudie lalale laee unkefnld). plus me lullnwing annaiauans ul flEfllE a 1 JAN Mmon ulmnq minesml iumoosilun, usaiiil lordsasrlmun. vnrwi mid hack-alum wum suilmnle is shalun in waur ind flawed in slanduniillaynslunn (lezndayii 1h- volume oi aaah imiun dlkmlmsusesmfl ale-lurrelissiliaaiiun me mum ll elemenis give some 0! men known elled: nn soil plani, and animal healrh, or iheir speeial uses, 8.6 PRIMARY NUTRIENTS FOR PLANTS Salk are alien analysed as delieieni in linih mos PHATES and POTASH in hardy learhed areas phosphaies are supplied eiiher by guann laird mannresi lrnm drv islands, nr lruin older deposiis loulld in sedimeniary ruelr Polish oerurs in ilie mineral leainue, lormed in areas ol evaporaied waiers. Deserr salis usually eoniains zue % parash l-nusphaiir mtk l) resirieied m disiriuuiion, and «warns 345% Phosphorus in various rumlainaiions Willi oxygen or Main lnydraredi There are large reserves ni potash in common minerals like orihoelase la mapr ennsinueni rii granilel NITROGEN an be supplred by waior in land plants indeulaied wilh rhlwbu. dr liaed lay algae and waler plains sum as Serrnvs nr Axnlla We ean ereale ihe eondi 'nns lur lining niirogen by growing ihese numgenrllxmg plums, ineieulared wuh ihe appropriale rniauuia Mueli higher levels ol niirugen rhan were prevruualy inaughi id be available are lined by land plan, in a series or aenes eriending lrum ihe rools Even alier ninugennus planis surh as Ararla. Album, and Elrnxlllu are eui. ilie rudr aane wfll eonlinue id release niirogrn liar up lo a years, so rhai pioneer legumes ur nilrugennus irees serve as ediver crop liar liees. and release niiiogen during iheir lrienmes and lor some years alier legumes may nor be needed in older loresis, and rypirally die um under eannpv Only a lew larger leguminens irees isanuiiru, Arnrm mllmmxylall) peisrsi as loresi irees in a mlxzd lures . aoih phmphak leonreniraied by fiddling uudsl and porash {from bur-m and rolled planis or composil (in lae ldrally produced il lands are plenlu‘ul and iheir nianures are used. The phesphales nnned irum marine guano, however, may eaniain eoneeniraied levels ol eadinium and uranium, eilher or udih ui which land diher heavy memlsi an be nken up lay ihe ueeanie lish and snslliish used hy marine bird colonies cdniinual heavy use ol surn resairrres is likely lo became pulluung I0 sulls Our only elhreal snaiegy is io use iusi enangh or ihese resourees, and lo rdnserve ihein ideally, SOURCE OF MINERALS IN sou m3.» li makes sense io assume ahai as sons are leaelied, and so made mmuilrpnor, ihese minerals laier become indie romenlnlzd in iiie sea, in marine organisms, or in inland salipana. Seaweeds, reagrasses, and fish residues have always bun pan ol agrieuliural lern isers, and have mamiained ineir plane even in 187