I-sodium o-nitrophenolate ingasetshenziswa njenge-activator yeseli yezitshalo, engangena ngokushesha emzimbeni wesitshalo, ikhuthaze ukugeleza kwe-protoplasm yeseli, futhi isheshise isivinini sokukhula kwezitshalo.

Izinhlobo eziyinhloko zezimpande zesitshalo kanye nama-ejenti okukhulisa isiqu zifaka i-chlorformamide ne-choline chloride/naphthyl acetic acid.

I-Choline chloride iyisilawuli sokwenziwa sokukhula kwezitshalo esingakhuthaza ukwanda ngokushesha kwezimpande nezilimo eziyizigaxa ezingaphansi komhlaba, ukuthuthukisa isivuno kanye nekhwalithi. . Ingakwazi futhi ukulawula i-photosynthesis yamaqabunga futhi ivimbele i-photorespiration, ngaleyo ndlela ikhuthaze ukwanda kwezilimo eziyizigaxa ezingaphansi komhlaba.

Izilawuli zokukhula kwezitshalo ezikhuthaza ukuvuthwa kusenesikhathi kwezitshalo ikakhulukazi zihlanganisa lezi zinhlobo ezilandelayo:I-Gibberellic Acid (GA3)‌: I-Gibberellic Acid iyisilawuli sokukhula kwezitshalo esine-spectrum esibanzi esingakhuthaza ukukhula nokuthuthuka kwezitshalo, sizenze zisheshe zivuthwe, andise isivuno, futhi uthuthukise ikhwalithi. Ilungele izitshalo ezinjengokotini, utamatisi, izihlahla zezithelo, amazambane, ukolweni, ubhontshisi wesoya, ugwayi nelayisi.

Izimpande zezitshalo ngesinye sezigaba ezibalulekile zokukhula kwezitshalo futhi zibaluleke kakhulu ekukhuleni, ekuthuthukisweni nasekuzalaneni kwezitshalo. Ngakho-ke, indlela yokukhuthaza ukuqothulwa kwezitshalo kuyindaba ebalulekile ekutshalweni kwezitshalo. Lesi sihloko sizoxoxa ngendlela yokukhuthaza ukuqothulwa kwezitshalo kusukela ezicini zezimo zokudla okunomsoco, izici zemvelo, nezindlela zokwelashwa.