I-Humic acid (HA) yimveliso ezinzileyo ngokubola kwezinto eziphilayo kwaye ngoko iqokelela kwiinkqubo zokusingqongileyo.Iasidi eHumic inokuba luncedo ekukhuleni kwezityalo ngokuchela izondlo ezingafumanekiyo kunye ne-buffering pH.Sivavanye umphumo we-HA ekukhuleni nasekuthatheni i-micronutrient kwingqolowa (i-Triticum aestivum L.) ekhuliswe nge-hydroponically.Izonyango ezine zengcambu zone zifaniswa: (i) i-25 micromoles synthetic chelate N- (4-hydroxyethyl) ethylenediaminetriacetic acid (C10H18N2O7) (HEDTA kwi-0.25 mM C);(ii) I-25 micromoles synthetic chelate kunye ne-4-morpholineethanesulfonic acid (C6H13N4S) (MES kwi-5 mM C) i-pH buffer;(iii) HA kwi-1 mM C ngaphandle kwe-synthetic chelate okanye isithinteli;kwaye (iv) akukho chelate eyenziweyo okanye isithinteli.IAmple inorganic Fe (35 micromoles Fe3 +) yanikezelwa kulo lonke unyango.Akukho mahluko ubalulekileyo ngokwezibalo kwi-biomass iyonke okanye isivuno sembewu phakathi konyango, kodwa i-HA iye yasebenza ekuphuculeni i-interveinal chlorosis eyenzeka ngexesha lokukhula kwangoko kwe-nonchelated trea tment.I-Leaf-tissue Cu kunye ne-Zn concentrations yayiphantsi kunyango lwe-HEDTA ngokumalunga ne-no chelate (NC), ebonisa ukuba i-HEDTA inzima kakhulu ezi zondlo, ngaloo ndlela inciphisa imisebenzi yabo ye-ion yamahhala kwaye ngoko, i-bioavailability.I-asidi ye-Humic ayizange idibanise i-Zn njengoko imodeli enamandla kunye ne-chemical equilibrium modeling ixhase ezi ziphumo.Iimvavanyo ze-Titration zibonise ukuba i-HA yayingeyona i-pH buffer esebenzayo kwi-1 mM C, kwaye amanqanaba aphezulu abangele i-HA-Ca kunye ne-HA-Mg ye-flocculation kwisisombululo sezondlo.
