Humic acid (HA) samfuri ne mai ingantacciyar tsayayye na bazuwar kwayoyin halitta don haka yana taruwa a tsarin muhalli.Humic acid na iya amfanar ci gaban shuka ta hanyar lalata abubuwan gina jiki waɗanda ba su samuwa da kuma buffering pH.Mun yi nazarin tasirin HA akan haɓakawa da haɓakar micronutrients a cikin alkama (Triticum aestivum L.) girma hydroponically.An kwatanta magungunan tushen tushen hudu: (i) 25 micromoles synthetic chelate N- (4-hydroxyethyl) ethylenediaminetriacetic acid (C10H18N2O7) (HEDTA a 0.25 mM C);(ii) 25 micromoles roba chelate tare da 4-morpholineethanesulfonic acid (C6H13N4S) (MES a 5 mM C) pH buffer;(iii) HA a 1 mM C ba tare da chelate ko buffer na roba ba;da (iv) babu chelate ko buffer na roba.An ba da isasshen inorganic Fe (35 micromoles Fe3+) a duk jiyya.Babu wani bambanci mai mahimmanci a cikin jimillar kwayoyin halitta ko yawan iri a tsakanin jiyya, amma HA ya yi tasiri wajen inganta chlorosis na leaf wanda ya faru a farkon girma na maganin da ba a kula da shi ba.Leaf-tissue Cu da Zn maida hankali sun kasance ƙasa a cikin jiyya na HEDTA dangane da babu chelate (NC), yana nuna HEDTA ta haɗa waɗannan abubuwan gina jiki sosai, don haka rage ayyukan su na ion kyauta kuma saboda haka, samun rayuwa.Humic acid bai hada Zn ba kamar yadda mai ƙarfi da ƙirar sinadarai ke tallafawa waɗannan sakamakon.Gwajin titration ya nuna cewa HA ba ingantaccen pH buffer ba ne a 1 mM C, kuma matakan da suka fi girma sun haifar da haɓakar HA-Ca da HA-Mg a cikin maganin gina jiki.
