I-Indole-3-butyric acid (IBA) sisilawuli sokukhula kwesityalo esinokukhuthaza ukukhula kwezityalo kunye nophuhliso, ukwenza izityalo zityebile kwaye zomelele, kwaye ziphucule ukukhuseleka kwezityalo kunye nokuxhathisa uxinzelelo.

I-Brassinolide (i-BRs) isisilawuli esisebenzayo sokukhula kwesityalo esisetyenziselwa ukunciphisa umonakalo wokubulala izitshabalalisi. I-Brassinolide (BRs) inokunceda ngokufanelekileyo izityalo ukuba ziphinde zikhule ngokuqhelekileyo, ziphucule ngokukhawuleza umgangatho weemveliso zezolimo kunye nokwandisa isivuno sezityalo, ngakumbi ekunciphiseni umonakalo we-herbicide. Inokukhawulezisa ukudityaniswa kwee-amino acids emzimbeni, yenze ii-amino acids ezilahlekileyo ngenxa yomonakalo wezitshabalalisi, kwaye ihlangabezane neemfuno zokukhula kwesityalo, ngaloo ndlela ithomalalisa umonakalo wokubulala izitshabalalisi.

I-Defoliant sisilawuli sokukhula esinokukhuthaza izityalo ukuba zichithe amagqabi ekwindla, ukunciphisa ixesha lokukhula kwesityalo, ukuphucula ukusebenza kakuhle kwe-photosynthesis yezityalo, kunye nokwandisa ukuxhathisa kwesityalo kuxinzelelo kunye nokubanda. Indlela yokusebenza ye-defoliants kukulawula inqanaba lamahomoni angapheliyo, ukuguga amagqabi, kunye nokukhuthaza ukuchithwa. Kwizityalo ezihlala kwindawo yokushisa ephantsi ixesha elide, ukusetyenziswa okufanelekileyo kwe-defoliants kunokukhuthaza ngokufanelekileyo ukukhula nophuhliso lwabo.

Iimpawu zomzimba kunye neekhemikhali ze-forchlorfenuron (KT-30). I-Forchlorfenuron yenye yezinto eziphambili kwijusi yekhokhonathi. Iyeza loqobo ngumgubo omhlophe oqinileyo, onganyibilikiyo emanzini, kwaye unyibilika ngokulula kwizinyibilikisi eziphilayo ezifana neacetone kunye ne-ethanol.