I-Indole-3-butyric acid (IBA) isilawuli sokukhula kwezitshalo esingakhuthaza ukukhula nokuthuthuka kwezitshalo, senze izitshalo ziqhakaze futhi zibe namandla, futhi sithuthukise ukuvikeleka kwezitshalo nokumelana nengcindezi.

I-Brassinolide (BRs) iyisilawuli esisebenzayo sokukhula kwezitshalo esisetshenziselwa ukudambisa ukulimala kwezibulala-zinambuzane. I-Brassinolide (BRs) ingasiza ngempumelelo izitshalo ukuthi ziphinde zikhule ngendlela evamile, zithuthukise ngokushesha ikhwalithi yemikhiqizo yezolimo futhi zandise isivuno sezitshalo, ikakhulukazi ekudambiseni umonakalo wokubulala ukhula. Ingasheshisa ukwakheka kwama-amino acid emzimbeni, yenze ama-amino acid alahlekile ngenxa yokulimala kwezibulala-zinambuzane, futhi ihlangabezane nezidingo zokukhula kwezitshalo, ngaleyo ndlela inciphise ukulimala kwezibulala-zinambuzane.

I-Defoliant iyisilawuli sokukhula esingakhuthaza izitshalo ukuthi zichithe amaqabunga ekwindla, zifinyeze isikhathi sokukhula kwezitshalo, zithuthukise ukusebenza kahle kwe-photosynthesis yezitshalo, futhi zithuthukise ukumelana kwesitshalo ekucindezelekeni nokubanda. Indlela yokusebenza yama-defoliants ukulawula izinga lamahomoni angapheli, ukuguga amaqabunga, nokukhuthaza ukuchithwa. Ezitshalweni ezihlala endaweni yokushisa ephansi isikhathi eside, ukusetshenziswa okufanele kwama-defoliants nakho kungakhuthaza ngokuphumelelayo ukukhula nokuthuthukiswa kwazo.

Izakhiwo zomzimba nezamakhemikhali ze-forchlorfenuron (KT-30). I-Forchlorfenuron ingenye yezingxenye eziyinhloko kujusi kakhukhunathi. Umuthi wokuqala uyimpushana emhlophe eqinile, engancibiliki emanzini, futhi encibilika kalula kuzincibilikisi eziphilayo njenge-acetone ne-ethanol.